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Standard Scientific Research and Essays (SSRE)
Table of Content: December Special Issue 2014; Volume 2 Issue 13
Loutfy H. Madkour and ElrobySK
Correlation between corrosion inhibitive effect and quantum molecular
structure of Schiff bases for iron in acidic and alkaline media
Stand. Sci. Res. Essays 2014 2(13): 680-704 [Abstract] [Full Text-
PDF] (984 KB)
Standard Scientific Research and Essays Vol. 2(13), pp. 680-704 December Special Issue 2014 (ISSN: 2310-7502)
Copyright © 2014 Standard Research Journals
http://standresjournals.org/journals/SSRE/Content/2014/december_special_issue.html
http://standresjournals.org/journals/SSRE/Abstract/2014/december_special_issue/Madkour%20and%20Elroby.html
Review article

2
Correlation between corrosion inhibitive effect and
quantum molecular structure of Schiff bases for iron in
acidic and alkaline media
*1Loutfy H. Madkour and 2ElrobySK
1
Department of Chemistry, Faculty of Science and Arts, Baljarashi, Al-Baha University, P.O. Box1988 Al-Baha, Saudi Arabia
2
Department of Chemistry, Faculty of Science, King Abdul-Aziz University, P.O. Box 80203 Jeddah 21589 Saudi Arabia
*Corresponding E-mail address: loutfy_madkour@yahoo.com, Tel. +966 541945518; Fax: +966 77247272
Accepted 14 December 2014
Abstract
Quantum chemical calculations using the density functional theory (DFT) have been applied to the five kinds of polydentate
Schiff base compounds (PSCs), act as inhibitors for iron in aerated 2.0 M HNO3 and 2.0 M NaOH media. The structural
parameters, such as the frontier molecular orbital energy HOMO (highest occupied molecular orbital), LUMO (lowest
unoccupied molecular orbital), energy gap ∆E (ELUMO - EHOMO), the charge distribution, the absolute electronegativity
(χ), the fraction of electrons transfer (∆N) from inhibitors to iron, the dipole moment (µ), the global hardness (η) and the
total energy (Etotal) were also calculated and correlated with their inhibition efficiencies (%IE). The inhibition effects of
(PSCs) may be explained in terms of electronic properties. The results showed that the (%IE) of PSCs increased with the
increase in EHOMO and decrease in ELUMO - EHOMO. The inhibitor molecules were first adsorbed on the iron surface
and blocking the reaction sites available for corrosive attack; and the areas containing N and O atoms are most possible
sites for bonding by donating electrons to the iron surface through interaction with π-electrons of the aromatic rings, and
the azo methine group. Also, the adsorbed Schiff base molecules interact with iron ions in the corrosive media leading to
neutral and cationic iron-Schiff base complexes. Adsorption process is spontaneous, exothermic and obeyed Temkin
isotherm and regarded as physical as chemical mechanism. The polarization studied indicated that the inhibitors act as a
mixed type inhibitor in HNO3; cause only inhibition of the cathode process in NaOH, and the magnitude of the
displacement of the Tafel plot is proportional to its concentration. Models for the inhibition corrosion behaviour were
developed based upon statistical analyses of the experimental data. Some thermodynamic and kinetic parameters (Kads,
∆Gads) were estimated. Both experimental and quantum theoretical calculations are in excellent agreement. The inhibition
efficiency increase in the order of: PSC_1 > PSC_2 > PSC_3 > PSC_4>PSC_5. Thus, DFT study gave further insight into
the mechanism of inhibition action of PSCs. This research might provide a theoretical inhibition performance evaluation
approach for homologous inhibitors.
Keywords: Corrosion inhibitor, Quantum chemical, DFT method, Schiff bases adsorption, Molecular orbital, Iron electrode,
Temkin isotherm

3
Loutfy H. Madkour and Zinhome UA
Inhibition, kinetic and thermodynamic effects of new Azo derivatives on
iron corrosion in acidic and alkaline solutions
Stand. Sci. Res. Essays 2014 2(13): 705-724 [Abstract] [Full Text-PDF] (1.2
MB)
http://standresjournals.org/journals/SSRE/Abstract/2014/december_special_issue/Madkour%20and%20Zinhome.html
Review article
Inhibition, kinetic and thermodynamic effects of new Azo
derivatives on iron corrosion in acidic and alkaline
solutions
*1
Loutfy H. Madkour and 2
Zinhome UA
1Chemistry Department, Faculty of Science and Arts, Baljarashi, Al-Baha University, P.O. Box. (1988), Al-Baha, Kingdom
of Saudi Arabia
2Chemistry Department, Faculty of Science, Tanta University, 31527, Tanta, Egypt
*Corresponding author E-mail: loutfy_madkour@yahoo.com; Tel. +966 541945518; Fax: +966 77247272
Accepted 14 December 2014
Abstract
This investigation is designed to apply an advanced kinetic-thermodynamic model on the experimental data obtained
from acidic and alkaline corrosion of iron using mono- and bis-azo dyes as corrosion inhibitors. The inhibition properties
of the tested azo dyes on corrosion of iron in HNO3 and NaOH media were analyzed by gravimetric, thermometric and
polarization measurements. The three studied methods gave consistent results. Polarization study showed that all the
inhibitors are mixed type in acidic, act mainly as cathodic in alkaline solution. The synthesized azo dye derivatives exhibit
good inhibition properties, obeys the Frumkin adsorption isotherm. The large values of the change in the standard free
energy of adsorption (∆Go
ads), equilibrium constant (Kads) and binding constant (Kb) revealed that the reactions proceed
spontaneously and result in highly efficient physisorption mechanism and stronger electrical interaction between the
double layer existing at the phase boundary and the adsorbing molecules. The inhibition efficiency depends on the
number of adsorption oxygen sites (OH and OMe groups), their charge density and π-electron clouds. The inhibition
efficiency evaluated via theoretical methods was well accorded with reported experimental ones, following the same
order as: naphthyl- ligand >-naphthyl>p-anisdine>p-toluidine >o-toluidine >m-toluidine derivative. This research
might provide a theoretical inhibition performance evaluation approach for homologous inhibitors.
Keywords: Corrosion, inhibitor, mono- and bis-azo dyes, iron, HNO3, NaOH

4
Journal of Geochemistry
Volume 2014 (2014), Article ID 451782, 10 pages
http://dx.doi.org/10.1155/2014/451782
http://www.hindawi.com/journals/jg/2014/451782/
Research Article
Electro-Thermal and Semiconductivity Behaviour of Natural Sintered
Complex Carbonate Ore for Thermo-Technological Applications
Loutfy H. Madkour
Chemistry Department, Faculty of Science and Arts, Baljarashi, Al-Baha University, P.O. Box 1988, Al-
Baha, Saudi Arabia
Received 9 September 2013; Revised 8 December 2013; Accepted 6 January 2014; Published 5 March
2014
Academic Editor: Miguel A. Huerta-Diaz
Copyright © 2014 Loutfy H. Madkour. This is an open access article distributed under the Creative
Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any
medium, provided the original work is properly cited.
Abstract
The polymetal (Zn, Pb, Fe, Ca, Mg, Cd, Ba, Ni, Ti, and SiO2) complex Umm-Gheig carbonate ore is
subjected to sintering treatment at 573, 773, 973 and 1273 K respectively for four hours. Chemical, spectral,
X-ray and differential thermal analyses are applied for the native ore as well as for the samples preheated
and sintered. The current versus applied DC voltage (I–V) characteristics, bulk density (Db), percent
shrinkage (%S), activation energy (Ea) and energy gap (Eg) are established for the sintered ore. The
electrical conductivity(σ), thermal conductivity (K) and thermoelectric power coefficient (α) have been
investigated as a function of applied temperature for the sintered ore materials. The electrical conduction is
mainly achieved by free electrons near or in conduction band or n-type. As the sintering temperature (Ts)
increases the conduction of the ore is also increased due to the recombination process taking place between
the electrons and holes. Electrons hopping between Fe2+
and Fe3+
are the main charge carriers. The formation
of Fe3O4 at high sintering temperature acts as an active mineralizer, thus inducing an increased degree of
crystallinity and a more ordered crystal structure is produced.

5
1
Thermodynamic behaviour of complex antimonite ore for electrodeposition
of metal value
★★★★★
German National Library of Science and Technology (GetInfo)
Madkour, L. H.
BL OC
1997-01-01
2
Electrolytic separation of lead and its dioxide from carbonate ore residuum
★★★★★
Madkour, L. H.
BL OC
1995-01-01
3
Electrolytic extraction of uranium from Egyptian phosphorites
★★★★★
Madkour, L. H.
BL OC
1995-01-01
4
Electrolytic recovery of antimony from natural stibnite ore
★★★★★

6
Madkour, L. H.; Salem, I. A.
BL OC
1996-01-01
5
Synthesis and Characterization of 2,2'-Biimidazole Complexes of Oxocations
of Molybdenum (VI, V) and Uranium(VI)
★★★★★
Kandil, S. S.; Madkour, L. H.
BL OC
1993-01-01
6
Inhibition of the corrosion of 16/14 austenitic stainless steel by oxygen and
nitrogen containing compounds
★★★★★
Madkour, L. H.; Ghoneim, M. M.
BL OC
1997-01-01
7
Electrodeposition of lead and its dioxide from egyptial carbonate ore
residuum
★★★★★

7
Madkour, L. H.; Society for the Advancement of Electrochemical Science and
Technology
BL CP
1996-01-01
8
Inhibitory Effect of Some Carbazides on Corrosion of Aluminium in
Hydrochloric Acid and Sodium Hydroxide Solutions
★★☆★★
Fouda, A. S.; Madkour, L. H.; Elasklany, A. H.
BL OC
1995-01-01
9
Inhibition Effect of Hydantoin Compounds on the Corrosion of Iron in
Nitric and Sulfuric Acid Solutions
★★☆★★
Madkour, L. H.; Hassanein, A. M.; Ghoneim, M. M.
BL OC
2001-01-01
10
Corrosion Inhibitors for Zinc in 2 M HCl Solution
★★☆★★
Fouda, A. S.; Madkour, L. H.; El-Shafei, A. A.

8
BL OC
1995-01-01
11
Inhibition of the acid corrosion of iron with haloacetic acids
★★☆★★
El-Gaber, A. S.; Madkour, L. H.; El-Asklany, A. H.
BL OC
1997-01-01
12
Inhibition of Copper Corrosion by Arylazotriazoles in Nitric Acid Solution
★★☆★★
Madkour, L. H.; Elmorsi, M. A.; Ghoneim, M. M.
BL OC
1995-01-01
13
Thermo-physical studies on ilmenite ore for mass production of ceramic
capacitors
★★☆★★
Madkour, L. H.; Abou-Sekkina, M. M.; Hemeda, O. M.
BL OC
1996-01-01

9
Professor Loutfy Hamid Madkour
Professor of Physical Chemistry, Saudi Arabia ORCID 0000-0002-3101-8356
Personal Information
Biography
Professor LOUTFY HAMID MADKOUR Scopus Author Identifier: 6701732721 Professor of
Physical Chemistry, Saudi Arabia ORCID 0000-0002-3101-8356 Prof. LOUTFY HAMID
MADKOUR Professor of Physical Chemistry and Electro analytical Chemistry. Scopus Author
Identifier: 6701732721 E-mail: Loutfy_madkour@yahoo.com Mobile: 002/01008808079 (Egypt).
Mobile: 00966/532598878 (Saudi Arabia). Prof. LOUTFY H. MADKOUR graduated as B. Sc.
Chem. in 1972 at Cairo University and as M.Sc. Electrometallurgy at Menia University in 1979. In
1982 He obtained his Ph.D.in Physical and Electro analytical chemistry at Tanta University. Prof.
Dr. MADKOUR, s special research interests are: Physical chemistry, Electrochemistry, Corrosion,
Electrometallurgy, Electro analytical chemistry, Analytical chemistry, Polarography, Electrolytic
extraction of heavy metals from natural ores and deposits, electrochemical thermodynamics, and
Environmental chemistry. Prof. MADKOUR is serving in different positions in Egypt, Republic of
Yemen, Kuwait and Kingdom of Saudi Arabia. Prof. LOUTFY. H. MADKOUR joined now again
from 24 Oct. 2012 as Professor for Physical and Electro analytical Chemistry. at Chemistry
Department, Faculty of Science and Arts, Baljarashi, Al-Baha University P.O. Box 1988, Al-Baha,
Kingdom of Saudi Arabia (KSA) till now. Biography Updated on 16 March 2015 Scholarly.
Contributions [Data Provided by
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Author profiles
Name Author ID Total Correct
Madkour, Loutfy H. 7003686193 172 172

10
Articles per profile: Madkour LH
Madkour, Loutfy H. (7003686193) Doc ID Year Correct
Aminic nitrogen- bearing polydentate Schiff base compounds as corrosion
inhibitors for iron in acidic and alkaline media: A combined experimental and
DFT studies
Madkour, L.H. Elroby, S.K.
8489238966
9 (2014)
y
Electro-Thermal and Semiconductivity Behaviour of Natural Sintered Complex
Carbonate Ore for Thermo-Technological Applications
Loutfy H. Madkour
Journal of Geochemistry
Volume 2014 (2014), Article ID 451782, 10 pages
http://dx.doi.org/10.1155/2014/451782
http://www.readcube.com/articles/10.1155/2014/451782
Kinetic-thermodynamic studies of substituted mono- and bis- azo dyes as
corrosion inhibitors for iron in nitric acid and sodium hydroxide solutions
Madkour, L.H. Zinhome, U.A.
(2014)
8487035933
7
(2012) y
Inhibition effect of Schiff base compounds on the corrosion of iron in nitric acid
and sodium hydroxide solutions
Madkour, L.H. Zinhome, U.A.
7995228917
7
(2010) y
Inhibition effect of hydantoin compounds on the corrosion of iron in nitric and
sulfuric acid solutions
Madkour, L.H. Hassanein, A.M. Ghoneim, M.M. Eid, S.A.
5724911445
4
(2001) y
Kinetics of substituted bis- and mono-azo dyes as corrosion inhibitors for
aluminium in hydrochloric acid and sodium hydroxide solutions
Madkour, L.H. Issa, R.M. El-Ghrabawy, I.M.
0032856958 (1999) y
Electrochemical Behaviour of 3-Arylazo-1,2,4-triazole Compounds in Aqueous
Buffered Solutions
Madkour, L.H.
2542539216 (1998) y
Thermodynamic behaviour of complex antimonite ore for electrodeposition of
metal value
Madkour, L.H.
0030901703 (1997) y
Madkour, L.H. Ghoneim, M.M.
0004488922 (1997) y

11
El-Gaber, A.S. Madkour, L.H. El-Asklany, A.H. Fouda, A.S.
0001955835 (1997) y
Thermo-physical studies on ilmenite ore for mass production of ceramic capacitors
Madkour, L.H. Abou-Sekkina, M.M. Hemeda, O.M.
3342880695 (1996) y
Electrodeposition of lead and its dioxide from Egyptial carbonate ore residuum
Madkour, L.H.
0343885772 (1996) y
Madkour, L.H. Salem, I.A.
0030283970 (1996) y
Inhibition of copper corrosion by arylazotriazoles in nitric acid solution
Madkour, L.H. Elmorsi, M.A. Ghoneim, M.M.
2184450360
8
(1995
y
Electrolytic separation of lead and its dioxide from carbonate ore residiuum
Madkour, L.H.
0029429109 (1995) y
INHIBITORY EFFECT OF SOME CARBAZIDES ON CORROSION OF
ALUMINUM IN HYDROCHLORIC-ACID AND SODIUM-HYDROXIDE
SOLUTIONS
By: FOUDA, AS; MADKOUR, LH; ELSHAFEI, AA; et al.
MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK Volume:
26 Issue: 6 Pages: 342-346 Published: JUN (1995)
CORROSION-INHIBITORS FOR ZINC IN 2M HCL SOLUTION
BULLETIN OF THE KOREAN CHEMICAL SOCIETY Volume: 16 Issue:
5 Pages: 454-458 Published: MAY 20 (1995)
SYNTHESIS AND CHARACTERIZATION OF 2,2'-BIIMIDAZOLE
COMPLEXES OF OXOCATIONS OF MOLYBDENUM (VI, V) AND
URANIUM(VI)
By: KANDIL, SS; MADKOUR, LH
SPECTROSCOPY LETTERS Volume: 26 Issue: 3 Pages: 535-550 Published:
(1993)
HYDRO- AND ELECTROMETALLURGY TREATMENT OF CASSITERITES
(greater than S%NO//2 CONCENTRATE).
(1995)
(1995)
(1993)
0024011748
y

12
Madkour, L.H. (1988)
THE INHIBITION OF THE DISSOLUTION OF ALUMINUM IN
HYDROCHLORIC-ACID BY SOME BIACETYLMONOXIME HYDRAZONES
By: FOUDA, AEE; ELASKLANY, AE; MADKOUR, LH; et al.
ACTA CHIMICA HUNGARICA-MODELS IN CHEMISTRY Volume:
124 Issue: 3 Pages: 377-385 Published: MAY-JUN (1987)
ELECTROREDUCTION OF 4-ARYLHYDRAZONO-1-
PHENYLPYRAZOLIDIN-3,5-DIONES IN 20-PERCENT ETHANOLIC BR
BUFFERS AT MERCURY-ELECTRODE
By: ISSA, RM; GHONEIM, MM; ELMORSI, M; MADKOUR, LH
JOURNAL OF THE ELECTROCHEMICAL SOCIETY Volume: 134 Issue:
3 Pages: C140-C140 Published: MAR (1987)
CRITICAL MICELLE CONCENTRATIONS OF
HEXADECYLTRIMETHYLAMONIUM CHLORIDE IN WATER OVER THE
TEMPERATURE-RANGE 25 TO 160-DEGREES-C
By: FOUDA, AA; MADKOUR, LH; EVANS, DF
INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-
INORGANIC PHYSICAL THEORETICAL & ANALYTICAL
CHEMISTRY Volume: 25 Issue: 12 Pages: 1102-1104 Published: DEC
(1986)
INHIBITIVE ACTION OF SOME AMINES AND HYDRAZINES TOWARDS
CORROSION OF ZINC IN TRICHLOROACETIC-ACID SOLUTION
By: FOUDA, AS; MADKOUR, LH
BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE Issue: 5 Pages: 745-
749 Published: SEP-OCT (1986)
ELECTRODEPOSITION OF TIN FROM TINSTONE ORE
By: FOUDA, AS; MADKOUR, LH; KHALIFA, ME
506 Published: JUL-AUG (1986)
CORRELATION BETWEEN EFFECTIVENESS OF ALIPHATIC-AMINES AS
CORROSION-INHIBITORS AND ELECTRON-DENSITY CALCULATIONS
By: FOUDA, AS; MADKOUR, LH; SOLIMAN, MS
(1987)
(1986)
(1986)
(1986)
(1987)

13
360 Published: MAY-JUN (1986)
THERMODYNAMIC STUDIES ON SULPHATE ROASTING FOR ZINC
ELECTROWINNING FROM CARBONATE ORE.
Madkour, Loutfy H.
(1986)
0022721274
(1986)
y
HYDROMETALLURGICAL AND ELECTROMETALLURGICAL
TREATMENT OF CASSITERITE CONCENTRATE.
Madkour, Loutfy H.
0022704469 (1986) y
Electrodeposition of titanium and its dioxide from ilmenite
Madkour, L.H. Fouda, A.S.
0022662445 (1986) y
RECOMMENDED FLOWSHEETS FOR THE ELECTROLYTIC
EXTRACTION OF LEAD AND ZINC FROM RED SEA POLYMETAL ORE.
Madkour, Loutfy H.
0022050490 (1985) y
POLAROGRAPHIC REDUCTION OF SOME ARYLIDENE DERIVATIVES
OF OXALIC HYDRAZIDE IN BUFFER SOLUTIONS OF VARYING pH.
Issa, R.M. Ghoneim, M.M. El-Baradie, H.Y.F. Madkour, L.H.
0021820751 (1985) y
ELECTROCHEMICAL REDUCTION OF SOME ARYLIDENE DERIVATIVES
OF SALICYLIC, OXALIC, SUCCINIC AND METHYL ( 2-HYDROXY
PHENIDENE )- BENZOIC HYDRAZIDES IN NONAQUEOUS MEDIUM AT A
MERCURY CATHODE.
Ghoneim, M.M. Issa, R.M. Madkour, L.H.
0021793615 (1985) y
THE EFFECT OF SOME BETA-DIKETO COMPOUNDS ON THE CORROSION OF ZINC IN
HYDROCHLORIC-ACID SOLUTION
By: FOUDA, AS; ELASKLANY, AH; MADKOUR, LH (1984)
JOURNAL OF THE INDIAN CHEMICAL SOCIETY Volume: 61 Issue: 5 Pages: 425-429 Published: (1984)

14
You searched for: AUTHOR: (Madkour LH) ...More
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(Madkour LH) ...More
1.
Inhibition effect of hydantoin compounds on the corrosion of iron in nitric and sulfuric acid solutions
By: Madkour, LH; Hassanein, AM; Ghoneim, MM; et al.
MONATSHEFTE FUR CHEMIE Volume: 132 Issue: 2 Pages: 245-258 Published: FEB 2001
Full Text from Publisher
View Abstract
Times Cited: 3
(from All Databases)
2.
Kinetics of substituted bis- and mono-azo dyes as corrosion inhibitors for aluminium in hydrochloric acid and
sodium hydroxide solutions
By: Madkour, LH; Issa, RM; El-Ghrabawy, IM
JOURNAL OF CHEMICAL RESEARCH-S Issue: 7 Pages: 408-409A Published: JUL 1999
View Abstract
Times Cited: 10
3.
Electrochemical behaviour of 3-Arylazo-1,2,4-triazole compounds in aqueous buffered solutions
By: Madkour, LH
JOURNAL OF CHEMICAL RESEARCH-S Issue: 9 Pages: 514-515 Published: SEP 1998
View Abstract
Times Cited: 2
4.
Thermodynamic behaviour of complex antimonite ore for electrodeposition of metal value
By: Madkour, LH
JOURNAL DE CHIMIE PHYSIQUE ET DE PHYSICO-CHIMIE BIOLOGIQUE Volume: 94 Issue: 3 Pages: 620-
634 Published: MAR 1997
View Abstract
Times Cited: 3

15
5.
By: ElGaber, AS; Madkour, LH; ElAsklany, AH; et al.
BULLETIN OF ELECTROCHEMISTRY Volume: 13 Issue: 2 Pages: 62-66 Published: FEB 1997
View Abstract
Times Cited: 2
6.
Inhibition of the corrosion of 16/14 austenitic stainless steel by oxygen and nitrogen containing compounds
By: Madkour, LH; Ghoneim, MM
BULLETIN OF ELECTROCHEMISTRY Volume: 13 Issue: 1 Pages: 1-7 Published: JAN 1997
View Abstract
Times Cited: 10
7.
By: Madkour, LH; Salem, IA
HYDROMETALLURGY Volume: 43 Issue: 1-3 Pages: 265-275 Published: NOV 1996
View Abstract
Times Cited: 9
8.
Electrodeposition of lead and its dioxide from Egyptial carbonate ore residuum
By: Madkour, LH
Conference: 5th International Symposium on Advances in Electrochemical Science and Technology Location: MADRAS,
INDIA Date: NOV 24-26, 1994
BULLETIN OF ELECTROCHEMISTRY Volume: 12 Issue: 3-4 Pages: 234-236 Published: MAR-APR 1996
View Abstract
Times Cited: 1
9.
ELECTROLYTIC SEPARATION OF LEAD AND ITS DIOXIDE FROM CARBONATE ORE RESIDIUUM
By: MADKOUR, LH
INDIAN JOURNAL OF CHEMICAL TECHNOLOGY Volume: 2 Issue: 6 Pages: 343-344 Published: NOV 1995
View Abstract
Times Cited: 2
10.
INHIBITION OF COPPER CORROSION BY ARYLAZOTRIAZOLES IN NITRIC-ACID SOLUTION
By: MADKOUR, LH; ELMORSI, MA; GHONEIM, MM

16
MONATSHEFTE FUR CHEMIE Volume: 126 Issue: 10 Pages: 1087-1095 Published: OCT 1995
11.
INHIBITORY EFFECT OF SOME CARBAZIDES ON CORROSION OF ALUMINUM IN HYDROCHLORIC-
ACID AND SODIUM-HYDROXIDE SOLUTIONS
MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK Volume: 26 Issue: 6 Pages: 342-346 Published: JUN
1995
View Abstract
Times Cited: 6
12.
BULLETIN OF THE KOREAN CHEMICAL SOCIETY Volume: 16 Issue: 5 Pages: 454-458 Published: MAY 20 1995
12
View Abstract
Times Cited: 16
13.
SYNTHESIS AND CHARACTERIZATION OF 2,2'-BIIMIDAZOLE COMPLEXES OF OXOCATIONS OF
MOLYBDENUM (VI, V) AND URANIUM(VI)
By: KANDIL, SS; MADKOUR, LH
SPECTROSCOPY LETTERS Volume: 26 Issue: 3 Pages: 535-550 Published: 1993
View Abstract
Times Cited: 4
14.
THE INHIBITION OF THE DISSOLUTION OF ALUMINUM IN HYDROCHLORIC-ACID BY SOME
BIACETYLMONOXIME HYDRAZONES
By: FOUDA, AEE; ELASKLANY, AE; MADKOUR, LH; et al.
ACTA CHIMICA HUNGARICA-MODELS IN CHEMISTRY Volume: 124 Issue: 3 Pages: 377-385 Published: MAY-
JUN 1987
Times Cited: 2
15.
ELECTRODEPOSITION OF INDIUM
By: FOUDA, AS; MADKOUR, LH; AHMED, AI
BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE Issue: 2 Pages: 270-272 Published: MAR-APR 1987
Times Cited: 1

17
16.
ELECTROREDUCTION OF 4-ARYLHYDRAZONO-1-PHENYLPYRAZOLIDIN-3,5-DIONES IN 20-PERCENT
ETHANOLIC BR BUFFERS AT MERCURY-ELECTRODE
By: ISSA, RM; GHONEIM, MM; ELMORSI, M; et al.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY Volume: 134 Issue: 3 Pages: C140-C140 Published: MAR 1987
Times Cited: 0
17.
CRITICAL MICELLE CONCENTRATIONS OF HEXADECYLTRIMETHYLAMONIUM CHLORIDE IN WATER
OVER THE TEMPERATURE-RANGE 25 TO 160-DEGREES-C
By: FOUDA, AA; MADKOUR, LH; EVANS, DF
INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL &
ANALYTICAL CHEMISTRY Volume: 25 Issue: 12 Pages: 1102-1104 Published: DEC 1986
Times Cited: 5
18.
INHIBITIVE ACTION OF SOME AMINES AND HYDRAZINES TOWARDS CORROSION OF ZINC IN
TRICHLOROACETIC-ACID SOLUTION
By: FOUDA, AS; MADKOUR, LH
BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE Issue: 5 Pages: 745-749 Published: SEP-OCT 1986
Times Cited: 2
19.
By: FOUDA, AS; MADKOUR, LH; KHALIFA, ME
BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE Issue: 4 Pages: 504-506 Published: JUL-AUG 1986
Times Cited: 0
20.
CORRELATION BETWEEN EFFECTIVENESS OF ALIPHATIC-AMINES AS CORROSION-INHIBITORS AND
ELECTRON-DENSITY CALCULATIONS
By: FOUDA, AS; MADKOUR, LH; SOLIMAN, MS
BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE Issue: 3 Pages: 358-360 Published: MAY-JUN 1986
21.
THERMODYNAMIC STUDIES ON SULFATE ROASTING FOR ZINC ELECTROWINNING FROM
CARBONATE ORE
By: MADKOUR, LH
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY Volume: 36 Issue: 5 Pages: 197-211 Published:
MAY 1986

18
Times Cited: 0
22.
ELECTRODEPOSITION OF TITANIUM AND ITS DIOXIDE FROM ILMENITE
By: MADKOUR, LH; FOUDA, AS
JOURNAL OF ELECTROANALYTICAL CHEMISTRY Volume: 199 Issue: 1 Pages: 207-210 Published: FEB 25 1986
Times Cited: 3
23.
RECOMMENDED FLOWSHEETS FOR THE ELECTROLYTIC EXTRACTION OF LEAD AND ZINC FROM
RED-SEA POLYMETAL ORE
By: MADKOUR, LH
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY A-CHEMICAL TECHNOLOGY Volume: 35 Issue:
3 Pages: 108-114 Published: 1985
Times Cited: 5
24.
THE EFFECT OF SOME BETA-DIKETO COMPOUNDS ON THE CORROSION OF ZINC IN
HYDROCHLORIC-ACID SOLUTION
By: FOUDA, AS; ELASKLANY, AH; MADKOUR, LH
JOURNAL OF THE INDIAN CHEMICAL SOCIETY Volume: 61 Issue: 5 Pages: 425-429 Published: 1984
Times Cited: 5
(from All Databases
Inhibition effect of hydantoin compounds on the corrosion of iron in nitric
and sulfuric acid solutions
By:Madkour, LH (Madkour, LH); Hassanein, AM (Hassanein, AM); Ghoneim, MM (Ghoneim, MM); Eid, SA (Eid, SA)
MONATSHEFTE FUR CHEMIE
Volume: 132
Issue: 2
Pages: 245-258
DOI: 10.1007/s007060170134
Published: FEB 2001
View Journal Information

19
JCR® Category Quartile in Category
CHEMISTRY, MULTIDISCIPLINARY Q3
Abstract
The inhibition of corrosion of iron in 2M nitric acid and 2M sulfuric acid solutions by substituted phenylhydantoin,
thiohydantoin, and dithiohydantoin compounds was measured using thermometric, weight loss, and polarization methods.
The three methods gave consistent results. The polarization curves indicated that the hydantoin compounds act as mixed-
type inhibitors. The adsorption of the inhibitors were found to obey the Temkin adsorption isotherm. The higher inhibition
efficiency of the additives in nitric with respect to sulfuric acid solution may be attributed to the reduced formation of
soluble quaternary nitrogen salts in nitric acid medium, favouring adsorption of the parent additive on the metal surface.
The obtained results indicate that the corrosion rate of iron in both acids increases with increasing temperature, both in
absence and presence of the tested inhibitors. Kinetic-thermodynamic model functions and Temkin isotherm data an
compared and discussed. The synergistic effect of halide anions on the inhibition efficiency of the hydantoin compounds
was also investigated.
Keywords
Author Keywords:acid corrosion; inhibition; iron; hydantoins; synergistic effect
KeyWords Plus:HALIDE-IONS; DISSOLUTION; STEEL
Author Information
Reprint Address: Ghoneim, MM (reprint author)
Tanta Univ, Fac Sci, Dept Chem, Tanta 31527, Egypt.
Addresses:
[ 1 ] Tanta Univ, Fac Sci, Dept Chem, Tanta 31527, Egypt
Publisher
SPRINGER-VERLAG WIEN, SACHSENPLATZ 4-6, PO BOX 89, A-1201 VIENNA, AUSTRIA
Categories / Classification
Research Areas:Chemistry
Web of Science Categories:Chemistry, Multidisciplinary
Document Information
Document Type:Article
Language:English
Accession Number: WOS:000167593400005
ISSN: 0026-9247
Journal Information
 Table of Contents: Current Contents Connect®

20
 Impact Factor: Journal Citation Reports®
Other Information
IDS Number: 413CY
Cited References in Web of Science Core Collection: 31
Times Cited in Web of Science Core Collection: 3
Kinetics of substituted bis- and mono-azo dyes as corrosion inhibitors for
aluminium in hydrochloric acid and sodium hydroxide solutions
By:Madkour, LH (Madkour, LH); Issa, RM (Issa, RM); El-Ghrabawy, IM (El-Ghrabawy, IM)
JOURNAL OF CHEMICAL RESEARCH-S
Issue: 7
Pages: 408-409A
DOI: 10.1039/a805608k
Published: JUL 1999
Abstract
This investigation is designed to apply an advanced kinetic-thermodynamic model on the data obtained from acidic and
alkaline corrosion of aluminium using bis- and mono-ate dyes as corrosion inhibitors.
Keywords
KeyWords Plus:NITROGEN-CONTAINING COMPOUNDS; ELECTROCHEMICAL-BEHAVIOR; CHLORIDE SOLUTION;
ALLOYS; ADSORPTION; STEEL; DERIVATIVES; DISSOLUTION; EFFICIENCY; COPPER
Author Information
Reprint Address: Madkour, LH (reprint author)
Addresses:
Publisher
SCIENCE REVIEWS LTD, 40 THE FAIRWAY, NORTHWOOD HA6 3DY, MIDDX, ENGLAND

21
Language:English
ISSN: 0308-2342
Journal Information
Other Information
IDS Number: 228DU
Electrochemical behaviour of 3-Arylazo-1,2,4-triazole compounds in
aqueous buffered solutions
By:Madkour, LH (Madkour, LH)
JOURNAL OF CHEMICAL RESEARCH-S
Issue: 9
Pages: 514-515
DOI: 10.1039/a800519b
Published: SEP 1998
Abstract
A variety of electroanalytical methods, e.g. DC polarography, cyclic voltammetry and controlled potential coulometry have
been employed upon 3-arylazo-1,2,4-triazole derivatives, AAT; substituents affect the reduction potentials but do not alter
the reduction pattern.
Author Information
Addresses:
Publisher
ROYAL SOC CHEMISTRY, THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD,, CAMBRIDGE CB4 0WF,
CAMBS, ENGLAND

22
Language:English
ISSN: 0308-2342
Journal Information
Other Information
IDS Number: 151MB
Thermodynamic behaviour of complex antimonite ore for electrodeposition
of metal value
JOURNAL DE CHIMIE PHYSIQUE ET DE PHYSICO-CHIMIE BIOLOGIQUE
Volume: 94
Issue: 3
Pages: 620-634
Published: MAR 1997
Abstract
This paper outlines the hydrometallurgical processing and the various possible approaches for the recovery of metallic
antimony from its antimonite sulphide ore by electrolysis. Thermodynamic calculations have been made to find the
optimum conditions for roasting and/or sulphate roasting of Wadi Abu Quraiya antimonite ore. The antimonite ore (Sb2S3)
is roasted directly without concentration and large savings in reagent and chemical processes are expected. A suitable
roasting temperature of 1200 K for 4 hours has been determined. Metallic antimony is' cathodically electrodeposited with a
high current efficiency at current densities of 350 to 500 A/m(2) depending on the composition of leach liquor solutions.
The results of the electron microscopy investigation confirmed by metal value data in the ASTM cards are in good
agreement with the chemical analysis.
Keywords
Author Keywords:antimony sulphide ore; roasting; hydrometallurgical treatment; antimony deposition
Author Information

23
TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT.
Publisher
EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER, 141 RUE JAVEL, 75747 PARIS, FRANCE
Research Areas:Biochemistry & Molecular Biology; Chemistry
Web of Science Categories:Biochemistry & Molecular Biology; Chemistry, Physical
Language:English
Accession Number: WOS:A1997WW09200012
ISSN: 0021-7689
Other Information
IDS Number: WW092
By:ElGaber, AS (ElGaber, AS); Madkour, LH (Madkour, LH); ElAsklany, AH (ElAsklany, AH); Fouda, AS (Fouda, AS)
BULLETIN OF ELECTROCHEMISTRY
Volume: 13
Issue: 2
Pages: 62-66
Published: FEB 1997
Abstract
The efficiency of chloro, dichloro, trichloro, bromo, and iodoacetic acids as inhibitors for acid corrosion of in-on was
studied using polarization technique. A significant retardation of the corrosion rate Is observed in the inhibited HNO3
solution. The rate of corrosion depends on the nature of the inhibitor and its concentration and on the temperature of the
system. It was found that iodoacetic acid has a significant inhibiting effect on the corrosion of the metal and protection
efficiencies approaching 91% were measured. The inhibitor shifts the free corrosion potential in the cathodic direction and
polarizes both the cathodic and anodic half reactions. It was found that the compounds under consideration are

24
chemisorbed on the iron sun-face according to the Frumkin isotherm. The Tafel slope is approximately constant and
independent of the concentration of the inhibitor, The thermodynamic parameters of adsorption obtained reveal a strong
interaction of these inhibitors on the iron surface.
Keywords
Author Keywords:corrosion; inhibition and haloacetic acids
Author Information
Addresses:
[ 1 ] QUAID I AZAM UNIV,FAC SCI,DEPT CHEM,DOHA,QATAR
[ 2 ] TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT
[ 3 ] EL MANSOURA UNIV,FAC SCI,DEPT CHEM,MANSOURA,EGYPT
Publisher
CENTRAL ELECTROCHEM RES INST, ATTN: DIRECTOR, KARAIKKUDI 623 006, INDIA
Research Areas:Electrochemistry
Web of Science Categories:Electrochemistry
Language:English
Accession Number: WOS:A1997WN20900003
ISSN: 0256-1654
Other Information
IDS Number: WN209
By:Madkour, LH (Madkour, LH); Ghoneim, MM (Ghoneim, MM)
Volume: 13
Issue: 1
Pages: 1-7
Published: JAN 1997

25
Abstract
Corrosion inhibition by methoionine (MET), citrulline (CIT), alanine (AL), glycine (GLY) and hydroxyproline (HPR) with
respect to the dissolution of tungsten stainless steels in hydrochloric acid solution was studied using potentiodynamic,
Tafel extrapolation and polarization resistance methods. Polarization curves indicated that the primary passivation
potential (Epp) and the transpassive region shift towards more positive potentials in presence of the studied amino acids,
i.e. there is more passivation at wide potential range in the presence of amino acid inhibitors. The corrosion parameters
are dependent on the percentage of tungsten in the alloy composition as well as the nature of the tested amino acids. The
intermetallic compound Fe3W2 may form a galvanic cell with the matrix around the Fe3W2 phase within the matrix that is
formed as a dispersed phase.
Keywords
Author Keywords:amino acids; inhibition; tungsten stainless steel
KeyWords Plus:HYDROCHLORIC-ACID SOLUTION; NITRIC-ACID; COPPER
Author Information
Addresses:
Publisher
Language:English
Accession Number: WOS:A1997WN20600001
ISSN: 0256-1654
Other Information
IDS Number: WN206
By:Madkour, LH (Madkour, LH); Salem, IA (Salem, IA)
HYDROMETALLURGY

26
Volume: 43
Issue: 1-3
Pages: 265-275
DOI: 10.1016/0304-386X(95)00113-U
Published: NOV 1996
METALLURGY & METALLURGICAL ENGINEERING Q1
Abstract
Stibnite ore at Wadi Abu Quraiya, situated in the central Eastern Desert of Egypt has been subjected to petrographical,
mineralogical, infrared, X-ray diffraction, chemical and spectral analyses. Hydrometallurgical treatment based on leaching
with acids, precipitation and electrodeposition of metal values from the ore have been developed. Studies to investigate
suitable electrolytic baths for the cathodic deposition of metallic antimony either directly from the leach liquor or in the
presence of complexing agents have been carried out, The influence of various factors on the electrodeposition process
of the element from its electrolyte solutions is discussed, Advantages of the flowsheet and various approaches depending
on convenient electrolytes for the deposition of antimony from the stibnite ore have been investigated. The results of
spectrophotometric and chemical analyses revealed that the purity of the metal is > 99%.
Keywords
Author Keywords:stibnite; leaching; antimony extraction
Author Information
Addresses:
[ 1 ] TANTA UNIV,FAC SCI,DEPT GEOL,TANTA,EGYPT
Publisher
ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Research Areas:Metallurgy & Metallurgical Engineering
Web of Science Categories:Metallurgy & Metallurgical Engineering
Language:English
Accession Number: WOS:A1996VM89200020
ISSN: 0304-386X

27
Journal Information
Other Information
IDS Number: VM892
Electrodeposition of lead and its dioxide from Egyptial carbonate ore
residuum
Volume: 12
Issue: 3-4
Pages: 234-236
Published: MAR-APR 1996
Conference
Conference: 5th International Symposium on Advances in Electrochemical Science and Technology
Location: MADRAS, INDIA
Date: NOV 24-26, 1994
Abstract
Acid-leach residue resulting from the sulphate roasting of Zn-Pb Egyptial carbonate ore is used for the production of lead,
after hydrometallurgical treatments. Studies to investigate various baths for the deposition of lead and lead dioxide have
been carried out. The results showed a wide variety of electrolysis, either soluble simple salts, or those containing
complex anions and in virtually all cases, very high current efficiencies are obtained. The effects of various factors on the
electrodeposition of Pb and PbO2 are discussed. Tn commercial practice, the properties and service requirements dictate
the precise electrolyte that should be used since the properties of electrodeposited lead vary with the baths, Mechanism
of the electrolytic production of the element and its dioxide is discussed. The results spectrophotometric and chemical
analyses revealed that the purity of the metal is > 99%.
Keywords
Author Keywords:carbonate ore residuum; hydrometallurgical treatments; lead extraction
Author Information
Addresses:

28
Publisher
Document Type:Article; Proceedings Paper
Language:English
Accession Number: WOS:A1996UT92200026
ISSN: 0256-1654
Other Information
IDS Number: UT922
ELECTROLYTIC SEPARATION OF LEAD AND ITS DIOXIDE FROM
CARBONATE ORE RESIDIUUM
By:MADKOUR, LH (MADKOUR, LH)
INDIAN JOURNAL OF CHEMICAL TECHNOLOGY
Volume: 2
Issue: 6
Pages: 343-344
Published: NOV 1995
CHEMISTRY, APPLIED Q4
ENGINEERING, CHEMICAL Q4
Abstract
Electrowinning work is carried out on the roasted Eastern Desert complex carbonate ore residuum. Lead and its dioxide
are electrodeposited from various electrolyte ore baths and the results showed a wide variety of ore electrolyte solutions,
either in the form of soluble simple ore salts, or those containing complex ore anions. The optimum conditions and the
efficiency of the electrolytic extraction are determined experimentally on the ore leach solutions.
Author Information

29
Reprint Address: MADKOUR, LH (reprint author)
Publisher
COUNCIL SCIENTIFIC INDUSTRIAL RESEARCH, PUBL & INFO DIRECTORATE, NEW DELHI 110012, INDIA
Research Areas:Chemistry; Engineering
Web of Science Categories:Chemistry, Applied; Engineering, Chemical
Document Type:Note
Language:English
Accession Number: WOS:A1995RY88900012
ISSN: 0971-457X
Journal Information
Other Information
IDS Number: RY889
INHIBITION OF COPPER CORROSION BY ARYLAZOTRIAZOLES IN NITRIC-
ACID SOLUTION
By:MADKOUR, LH (MADKOUR, LH); ELMORSI, MA (ELMORSI, MA); GHONEIM, MM (GHONEIM, MM)
MONATSHEFTE FUR CHEMIE
Volume: 126
Issue: 10
Pages: 1087-1095
DOI: 10.1007/BF00811379
Published: OCT 1995
Abstract

30
A study has been made to investigate the effect of some azoheterocyclic dyes of the type 3-arylazo 1,2,4-triazole (AT) on
the corrosion of copper exposed to 0.5 M nitric acid solution at different temperatures and at different AT concentrations.
Using potentiodynamic polarization and Tafel electrochemical methods, it can be shown that AT compounds are good
inhibitors of copper corrosion in HNO3 solution. The kinetic and thermodynamic parameters of the inhibited system were
determined. The high inhibition efficiency of these compounds may be due to the adsorption of the additive itself and/or
the adsorption of the formed Cu(II)-AT complexes at the polarized electrode interface. Cathodic polarization
measurements showed that AT dyes are predominantly cationic inhibitors.
Keywords
Author Keywords:ACID MEDIUM; ARYLAZOTRIAZOLES; INHIBITION; COPPER
KeyWords Plus:BENZOTRIAZOLE; ALLOYS; CU
Author Information
Publisher
SPRINGER-VERLAG WIEN, SACHSENPLATZ 4-6, PO BOX 89, A-1201 VIENNA, AUSTRIA
Language:English
Accession Number: WOS:A1995RZ65400005
ISSN: 0026-9247
Journal Information
Other Information
IDS Number: RZ654
INHIBITORY EFFECT OF SOME CARBAZIDES ON CORROSION OF
ALUMINUM IN HYDROCHLORIC-ACID AND SODIUM-HYDROXIDE
SOLUTIONS

31
By:FOUDA, AS (FOUDA, AS); MADKOUR, LH (MADKOUR, LH); ELSHAFEI, AA (ELSHAFEI, AA); ELASKLANY, AH
(ELASKLANY, AH)
MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK
Volume: 26
Issue: 6
Pages: 342-346
DOI: 10.1002/mawe.19950260612
Published: JUN 1995
MATERIALS SCIENCE, MULTIDISCIPLINARY Q4
Abstract
The dissolution of aluminium in hydrochloric acid and sodium hydroxide solutions in the presence of semicarbazide,
thiosemicarbazide and sym.diphenylcarbazide as corrosion inhibitors has been studied using thermometric, weight-loss
and polarization methods. The three methods gave consistent results. The higher inhibition efficiency of these compounds
in acidic than in alkaline madia may be due to the less negative potential of aluminium in hydrochloric acid solution,
favouring adsorption of the additive. The adsorption of these compounds were found to obey Frumkin adsorption
isotherm.
Cathodic polarization measurements showed that these compounds are cathodic inhibitors and their adsorption in the
double layer does not change the mechanism of the hydrogen evolution reaction. The results are analysed in terms of
both molecular and cationic adsorption.
Keywords
KeyWords Plus:DERIVATIVES; DISSOLUTION
Author Information
Reprint Address: FOUDA, AS (reprint author)
EL MANSOURA UNIV,FAC SCI,DEPT CHEM,MANSOURA,EGYPT.
Addresses:
Publisher
VCH PUBLISHERS INC, 303 NW 12TH AVE, DEERFIELD BEACH, FL 33442-1788
Research Areas:Materials Science
Web of Science Categories:Materials Science, Multidisciplinary

32
Language:English
Accession Number: WOS:A1995RF41700009
ISSN: 0933-5137
Journal Information
Other Information
IDS Number: RF417
By:FOUDA, AS (FOUDA, AS); MADKOUR, LH (MADKOUR, LH); ELSHAFEI, AA (ELSHAFEI, AA); ELMAKSOUD, SAA
(ELMAKSOUD, SAA)
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
Volume: 16
Issue: 5
Pages: 454-458
Published: MAY 20 1995
Abstract
Inhibiting action of semicarbazide, thiosemicarbazide, sym. diphenylcarbazide towards corrosion of zinc in hydrochloric
acid has been investigated. The rate of corrosion depends on the nature of the inhibitor and its concentration. The values
of inhibition efficiency from, weight loss, thermometric measurements are in good agreement with those obtained from
polarization studies. From the polarization studies, the inhibitors used act as mixed adsorption type inhibitors, increased
adsorption resulting from an increase in the electron density at the reactive C=S and C=O groups and N-atoms. The
thermodynamic parameters of adsorption obtained using Bockris-Swinkels adsorption isotherm reveal a strong interaction
of these carbazides on zinc surface.
Author Information
EL MANSOURA UNIV,FAC SCI,DEPT CHEM,MANSOURA,EGYPT.
Addresses:
[ 1 ] TANTA UNIV,TANTA,EGYPT

33
[ 2 ] SUEZ QANAL UNIV,FAC EDUC,AL ARISH,EGYPT
Publisher
KOREAN CHEMICAL SOC, 635-4 YEOGSAM-DONG, KANGNAM-GU, SEOUL 135-703, SOUTH KOREA
Language:English
Accession Number: WOS:A1995RB62400018
ISSN: 0253-2964
Journal Information
Other Information
IDS Number: RB624
SYNTHESIS AND CHARACTERIZATION OF 2,2'-BIIMIDAZOLE COMPLEXES
OF OXOCATIONS OF MOLYBDENUM (VI, V) AND URANIUM(VI)
By:KANDIL, SS (KANDIL, SS); MADKOUR, LH (MADKOUR, LH)
SPECTROSCOPY LETTERS
Volume: 26
Issue: 3
Pages: 535-550
DOI: 10.1080/00387019308011552
Published: 1993
SPECTROSCOPY Q4
Abstract
2,2'-Biimidazole complexes of MoO2(+2), MoO2+ and UO2(+2) have been prepared and characterized by elemental
analysis, conductance; and H-1 NMR, IR and electronic spectra. Two types of complexes have been identified. Those

34
obtained from slightly acidic solutions have the formulae MoO2(H2bim)Cl2.2H2O 1, UO2(H2bim)(Ac)2 2 and
UO2(H2bim)Cl2.2H2O 3; whereas those from alkaline solutions have the formulae Mo2O4(Hbim)2.2H2O 4, and
MO2(Hbim)2 (M = Mo(VI) 5, U(VI) 6). The infrared spectra of these complexes show characteristic biimidazole
frequencies in the 3200-2500, 1550-1000 and 750 cm-1 regions as well as metal oxygen double bonds in the 900 cm-1
region. The stoichiometries of the acetate complex has been confirmed from H-1 NMR signal ratios of biimidazole to
acetate protons at 7.3 and 2.3 ppm, respectively. The electronic spectrum of molybdenum(V) complex showed d-d
transition band at congruent-to 13,500 cm-1 in accord with that reported for copper (d9) imidazole complexes; as well as
peaks due to charge transfer bands at 30,000-26,000 cm-1. Peaks assignable to BIM --> U(VI) were located at congruent-
to 26,600 cm-1. The most probable structures of these complexes have been suggested.
Keywords
KeyWords Plus:RHODIUM(I) COMPLEXES; MOLECULAR-STRUCTURES; CRYSTAL-STRUCTURE; LIGANDS;
RESONANCE; ANIONS
Author Information
Reprint Address: KANDIL, SS (reprint author)
Publisher
MARCEL DEKKER INC, 270 MADISON AVE, NEW YORK, NY 10016
Research Areas:Spectroscopy
Web of Science Categories:Spectroscopy
Language:English
Accession Number: WOS:A1993KR90200012
ISSN: 0038-7010
Journal Information
Other Information
IDS Number: KR902

35
THE INHIBITION OF THE DISSOLUTION OF ALUMINUM IN
HYDROCHLORIC-ACID BY SOME BIACETYLMONOXIME HYDRAZONES
By:FOUDA, AEE (FOUDA, AEE); ELASKLANY, AE (ELASKLANY, AE); MADKOUR, LH (MADKOUR, LH); IBRAHIM, KM
(IBRAHIM, KM)
ACTA CHIMICA HUNGARICA-MODELS IN CHEMISTRY
Volume: 124
Issue: 3
Pages: 377-385
Published: MAY-JUN 1987
Author Information
Reprint Address: FOUDA, AEE (reprint author)
MANSOURA UNIV,FAC SCI,DEPT CHEM,MANSOURA,EGYPT.
Publisher
AKADEMIAI KIADO, PO BOX 245, H-1519 BUDAPEST, HUNGARY
Language:English
Accession Number: WOS:A1987K445300007
ISSN: 0231-3146
Other Information
IDS Number: K4453
ELECTRODEPOSITION OF INDIUM
By:FOUDA, AS (FOUDA, AS); MADKOUR, LH (MADKOUR, LH); AHMED, AI (AHMED, AI)
BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE
Issue: 2
Pages: 270-272
Published: MAR-APR 1987
Author Information

36
Addresses:
Publisher
EDITIONS SCIENTIFIQUES ELSEVIER, 141 RUE JAVEL, 75747 PARIS CEDEX 15, FRANCE
Web of Science Categories:Biochemistry & Molecular Biology; Chemistry, Multidisciplinary; Chemistry, Organic
Language:English
Accession Number: WOS:A1987H297500009
ISSN: 0037-8968
Other Information
IDS Number: H2975
ELECTROREDUCTION OF 4-ARYLHYDRAZONO-1-PHENYLPYRAZOLIDIN-
3,5-DIONES IN 20-PERCENT ETHANOLIC BR BUFFERS AT MERCURY-
ELECTRODE
By:ISSA, RM (ISSA, RM); GHONEIM, MM (GHONEIM, MM); ELMORSI, M (ELMORSI, M); MADKOUR, LH (MADKOUR,
LH); HAMMAM, E (HAMMAM, E)
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume: 134
Issue: 3
Pages: C140-C140
Published: MAR 1987
ELECTROCHEMISTRY Q2
MATERIALS SCIENCE, COATINGS & FILMS Q1

37
Author Information
Addresses:
Publisher
ELECTROCHEMICAL SOC INC, 10 SOUTH MAIN STREET, PENNINGTON, NJ 08534
Research Areas:Electrochemistry; Materials Science
Web of Science Categories:Electrochemistry; Materials Science, Coatings & Films
Document Type:Meeting Abstract
Language:English
Accession Number: WOS:A1987G410200520
ISSN: 0013-4651
Journal Information
Other Information
IDS Number: G4102
CRITICAL MICELLE CONCENTRATIONS OF
HEXADECYLTRIMETHYLAMONIUM CHLORIDE IN WATER OVER THE
TEMPERATURE-RANGE 25 TO 160-DEGREES-C
By:FOUDA, AA (FOUDA, AA); MADKOUR, LH (MADKOUR, LH); EVANS, DF (EVANS, DF)
INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL &
ANALYTICAL CHEMISTRY
Volume: 25
Issue: 12
Pages: 1102-1104
Published: DEC 1986

38
Author Information
Reprint Address: FOUDA, AA (reprint author)
Addresses:
[ 1 ] UNIV MINNESOTA,DEPT CHEM ENGN & MAT SCI,MINNEAPOLIS,MN 55455
Publisher
COUNCIL SCIENTIFIC INDUSTRIAL RESEARCH, PUBL & INFO DIRECTORATE, NEW DELHI 110012, INDIA
Language:English
Accession Number: WOS:A1986G105000007
ISSN: 0376-4710
Journal Information
Other Information
IDS Number: G1050
INHIBITIVE ACTION OF SOME AMINES AND HYDRAZINES TOWARDS
CORROSION OF ZINC IN TRICHLOROACETIC-ACID SOLUTION
By:FOUDA, AS (FOUDA, AS); MADKOUR, LH (MADKOUR, LH)
Issue: 5
Pages: 745-749
Published: SEP-OCT 1986
Author Information
Addresses:

39
[ 2 ] MANSOURA UNIV,FAC SCI,DEPT CHEM,MANSOURA,EGYPT
Publisher
EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER, 141 RUE JAVEL, 75747 PARIS CEDEX 15, FRANCE
Language:English
Accession Number: WOS:A1986E949300015
ISSN: 0037-8968
Other Information
IDS Number: E9493
By:FOUDA, AS (FOUDA, AS); MADKOUR, LH (MADKOUR, LH); KHALIFA, ME (KHALIFA, ME)
Issue: 4
Pages: 504-506
Published: JUL-AUG 1986
Author Information
Addresses:
Publisher

40
Language:English
Accession Number: WOS:A1986D456600003
ISSN: 0037-8968
Other Information
IDS Number: D4566
CORRELATION BETWEEN EFFECTIVENESS OF ALIPHATIC-AMINES AS
CORROSION-INHIBITORS AND ELECTRON-DENSITY CALCULATIONS
By:FOUDA, AS (FOUDA, AS); MADKOUR, LH (MADKOUR, LH); SOLIMAN, MS (SOLIMAN, MS)
Issue: 3
Pages: 358-360
Published: MAY-JUN 1986
Author Information
Addresses:
Publisher
Language:English
Accession Number: WOS:A1986C902300004
ISSN: 0037-8968
Other Information

41
IDS Number: C9023
THERMODYNAMIC STUDIES ON SULFATE ROASTING FOR ZINC
ELECTROWINNING FROM CARBONATE ORE
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
Volume: 36
Issue: 5
Pages: 197-211
Published: MAY 1986
BIOTECHNOLOGY & APPLIED MICROBIOLOGY Q2
ENGINEERING, CHEMICAL Q1
Author Information
Publisher
JOHN WILEY & SONS LTD, BAFFINS LANE CHICHESTER, W SUSSEX, ENGLAND PO19 1UD
Research Areas:Biotechnology & Applied Microbiology; Chemistry; Engineering
Web of Science Categories:Biotechnology & Applied Microbiology; Chemistry, Multidisciplinary; Engineering, Chemical
Language:English
Accession Number: WOS:A1986C307300001
ISSN: 0268-2575
Journal Information

42
Other Information
IDS Number: C3073
ELECTRODEPOSITION OF TITANIUM AND ITS DIOXIDE FROM ILMENITE
By:MADKOUR, LH (MADKOUR, LH); FOUDA, AS (FOUDA, AS)
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
Volume: 199
Issue: 1
Pages: 207-210
DOI: 10.1016/0022-0728(86)87053-X
Published: FEB 25 1986
CHEMISTRY, ANALYTICAL Q2
ELECTROCHEMISTRY Q2
Author Information
Addresses:
[ 1 ] MANSOURA UNIV,FAC SCI,DEPT CHEM,MANSOURA,EGYPT
Publisher
ELSEVIER SCIENCE SA LAUSANNE, PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND
Research Areas:Chemistry; Electrochemistry
Web of Science Categories:Chemistry, Analytical; Electrochemistry
Document Type:Note
Language:English
Accession Number: WOS:A1986A246800016
ISSN: 0022-0728
Other Information

43
IDS Number: A2468
RECOMMENDED FLOWSHEETS FOR THE ELECTROLYTIC EXTRACTION
OF LEAD AND ZINC FROM RED-SEA POLYMETAL ORE
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY A-CHEMICAL TECHNOLOGY
Volume: 35
Issue: 3
Pages: 108-114
Published: 1985
Author Information
TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT, EGYPT.
Publisher
BLACKWELL SCIENCE LTD, OSNEY MEAD, OXFORD, OXON, ENGLAND OX2 0EL
Research Areas:Biotechnology & Applied Microbiology
Web of Science Categories:Biotechnology & Applied Microbiology
Language:English
Accession Number: WOS:A1985AFR1000002
ISSN: 0264-3413
Other Information
IDS Number: AFR10
THE EFFECT OF SOME BETA-DIKETO COMPOUNDS ON THE CORROSION
OF ZINC IN HYDROCHLORIC-ACID SOLUTION
By:FOUDA, AS (FOUDA, AS); ELASKLANY, AH (ELASKLANY, AH); MADKOUR, LH (MADKOUR, LH)
JOURNAL OF THE INDIAN CHEMICAL SOCIETY

44
Volume: 61
Issue: 5
Pages: 425-429
Published: 1984
Author Information
Publisher
INDIAN CHEMICAL SOC, 92 ACHARYA PRAFULLA CHANDRA RD ATTN:DR INDRAJIT KAR/EXEC SEC, CALCUTTA
700009, INDIA
Language:English
Accession Number: WOS:A1984TL48300014
ISSN: 0019-4522
Other Information
IDS Number: TL483

Pub 2014 L H MADKOUR

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