Done By: khorg_Platinum Group School Name: Al Khor Independent School for Girls Environmental Catalysis Module: Students examines different types of catalytic systems, including heterogeneous and homogeneous catalysis. Depending on the knowledge they gained during activities, the students are then asked to design their projects. Our Project: Sulfur dioxide is converted to sulfuric acid,

1. AL-Bairaq
I am Discovering Materials
Cycle 8
Environmental Catalysis Module
Alkhor school / Platinum group

2. Introduction
• Activity 1: The decomposition of
H2O2 using yeast as a catalyst.
• Activity 2: Searching for Catalysts.
• Activity 3: Homogeneous and
Heterogeneous Acid Catalysis.
• Activity 4: Using a Metal Catalyst to
Degrade an Air Pollutant.
• Activity 5: Using Photocatalysis to
Degrade a Water Pollutant.
• Design Project: Designing a Catalytic
System.

3. • Catalysis enables a
chemical reaction to
occur at a much faster
rate.
• Over 80% of industrial
processes involve
catalysts.

4. The decomposition of H2O2
using yeast as a catalyst.
Activit
y “1”
• The yeast speeds up the decomposition
reaction of hydrogen peroxide.
• Catalysts ,temp., surface area, are factors
affect the rate of the reaction.
• We observe the foam.

5. Experiment steps
Put a few drops from
food dye into the
tube
Mix 2 spoons of yeast
with warm water Add a few drops from
the soap to the food
dye.
Add the yeast. Add hydrogen peroxide
(H2O2).
.

6. The
experiment
result is :
the hydrogen peroxide will decompose faster
and formed foam .

7. Searching for Catalysts
1- natural catalysts : it is
in our bodies and it called
“enzymes” .
Ex: trypsin
2- industrial catalysis : it
is used in factories and
laboratories .
Ex: Vanadium(V)
oxide on silica
Activity
“2”

8. Using a Heterogeneous
Act. 3 Acid Catalyst .

9. Cont. Activity
3
Label 3 small
beakers
Add 2g of catalyst
beads to beakers
number 2 and 3
Pour about 100mL of
hot water into 3 large
plastic-foam cups
Add 10mL of hot methyl
acetate to beakers umber
1 and 2
Add 10mL of hot water
Place each beaker into to beaker number 1
each plastic-foam
cups containing hot
water .
Use stirring rod to
transfer a drop of liquid
onto a separate strip of
pH paper

10. Cont.
Activity 3
• Stir the contents of the beakers continuously .
After 3 minutes , lest the pH of the liquid in
each beaker .
• Continue stirring the contents of the beakers
and lest the pH in each beaker after 6,9,12,
and 15 minutes of stirring . Record the pH
each time

11. Act. 4: Using a Metal Catalyst to
Degrade an Air Pollutant.
• the relative rates of catalytic oxidation of
ammonia is :
copper granules, copper turnings, iron fibers .

12. • Experiment steps
• Label 6 beakers : control , #1,#2,#3,#4, and #5
• Add 100mL of water to each beaker and add 5 drops of phenolphthalein
to the water
• Place the free end of the flexible tubing into the control beaker . The tip
of the medicine dropper should be submerged into in the liquid in the
beaker
• When gas has bubbled into the liquid in the control beaker for 30sec ,
move the tubing from the Control beaker to the large beaker of water and
record the color of the liquid .

13. Act. 4: Using a Metal Catalyst to Degrade
an Air Pollutant
• Heat the catalyst in the glass tube by swiftly moving the fame
of the bunsen burner back across the tube . Do this for 3
minutes
• Transfer the tubing from the large beaker of water to beaker
#1 . Continue heating the catalyst tube . At 30sec ., return the
tubing to the large beaker of water and record the color of the
liquid
• Repeat the previous step for beakers #2,3,4, and 5 in order
• Turn off the busen burner . Allow gas to bubble into the liquid
in the Control beaker for 5 minutes . Then unplug the
fish-tank air bubbler

14. Using Photocatalysis to Degrade a
Water Pollutant.

15. Time Dye + Tio2 dye Dye + Tio2 dye Dye + Tio2 dye
0 5 5 5 5 5 5
3 4 5 1 5 5 5
6 4 5 1 5 5 5
9 2 5 1 5 5 5
12 2 5 1 5 5 5
15 2 5 1 5 5 5
18 2 5 1 5 5 5
21 2 5 1 5 5 5

16. Designing a Catalytic
System to Degrade a
Pollutant.

17. We discuss the cases of SO2
pollutant in Qatar.

18. Sulfuric acid has several uses among these
some of them are:
-as starting substance like
fertilizers(ammonium sulphate, super
phosphate) .
-in car batteries as electrolyte.

21. Experiment Steps:

22. Resulets:-
Sulfuric Acid was formed.

23. Conclusion:
• The best way to get rid of air pollution
factory sulfur dioxide is converted to sulfuric
acid .

24. Acknowledgment
Many thanks to my teachers, school and AL-Bairaq team from
Center for Advanced Materials (CAM), Qatar University for
supporting us during our journey with a AL-Bairaq.
Also, I would like to thank the sponsors UNESCO, Ras Gas,
Maersk Oil and Shell.