本研究测量了取代苯基氢嘧啶、氨基氢嘧啶和二硫氢嘧啶化合物对铁在2M硝酸和2M硫酸溶液中腐蚀的抑制作用，采用了热量法、失重法和极化法。这三种方法的一致性结果表明，氢嘧啶化合物作为混合型抑制剂，而在硝酸介质中添加剂的抑制效率高于硫酸，可能归因于在硝酸中可溶性四氮盐的减少。研究还探讨了卤化物阴离子对氢嘧啶化合物抑制效率的协同作用。

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Inhibition Effect of Hydantoin Compounds on the Corrosion of Iron in Nitric and Sulfuric Acid Solutions
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 库名: 外文馆藏期刊题录数据库
 ID代码:WTL20020531099527
 分类号:TQ
 第一作者单位：Chemistry Department, Faculty of Science, Tanta University, 31527 Tanta,
Egypt
 页数：14
 年卷期:V.132 N.2 2001
 语种： eng
 刊名： Monatshefte fur Chemie Chemical Monthly
Montel Williams Loans
 作者：Loutfy H.Madkour
 出版年：2001

3.  文摘：
The inhibition of corrosion of iron in 2M itric acid and 2M sulfuric acid solutions by substituted
phenylphydantoin, hiohydantiin, and dithiohydantoin compounds was measured using
thermometric, weight loss, and polarization methods. The three methods gae consitstent
results. The polarization curves indicated that the hydantoin compounds act as mixed-type
inhibvitors. 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 he reduced formation of soluble quaternary nmitrogen 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 are compared and discussed. The synergistic effect
of halide anion on the inhibition efficiency of the hydantoin compounds was also investigated.
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Inhibition Effect of Hydantoin Compounds on the Corrosion of Iron in Nitric and Sulfuric Acid Solutions
download book
book
 库名: 外文馆藏期刊题录数据库
 ID代码:WTL20020531099527
 分类号:TQ
 第一作者单位：Chemistry Department, Faculty of Science, Tanta University, 31527 Tanta,
Egypt
 页数：14
 年卷期:V.132 N.2 2001
 语种： eng
 刊名： Monatshefte fur Chemie Chemical Monthly
Montel Williams Loans
 作者：Loutfy H.Madkour
 出版年：2001
 文摘：
The inhibition of corrosion of iron in 2M itric acid and 2M sulfuric acid solutions by substituted
phenylphydantoin, hiohydantiin, and dithiohydantoin compounds was measured using
thermometric, weight loss, and polarization methods. The three methods gae consitstent
results. The polarization curves indicated that the hydantoin compounds act as mixed-type
inhibvitors. 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 he reduced formation of soluble quaternary nmitrogen 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 are compared and discussed. The synergistic effect
of halide anion on the inhibition efficiency of the hydantoin compounds was also investigated.
 关于协会 协会网刊 化工年鉴 政策法规 展会信息 化工园区

6. free book
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联系我们
free book
download book
电话：010-64437120 传真：010-64437120
地址：北京市朝阳区亚运村安慧里四区16楼716室 邮 编：100723
技术支持：北京勤云科技发展有限公司