1. PREPARED BY; MUHAMMED DOĞAN 9/B 232
CATALYTIC CONVERTERS
PREPARED BY;
MUHAMMED DOĞAN
9/B 232

2. CONTENT The Origin The Usage & Importance The Dangers The Development
The Types
How They Work
For The Future
Quiz Time

3. The Origin
Eugene Houdry
around 1950
for smoke stacks

4. made up of platinum, palladium and rhodium speed up chemical reactions
The Usage & Importance
made up of platinum, palladium and rhodium
speed up chemical reactions
dangerous gases ---- less dangerous.
environment hygiene

5. The Dangers Nitrogen oxides, NO and NO2 ---- acid rains.
Carbon monoxide(CO) burn in insufficient oxygen---- poisonous.
Unburnt hydro carbons cancer.

6. The Development Eugene Houdry, for gasoline engines, mid 1950s
John J. Mooney & Carl D. Keith, for creating the first production catalytic converter, 1973.

7. The Types
2 types;
Two-way (Oxidation)
Three-way (Oxidation-Reduction)

8. Two-Way (Oxidation) 2 simultaneous task:
 Carbon monoxide burns with oxygen to form carbon dioxide:
2CO + O CO2
Hydrocarbons burn with oxygen to carbon dioxide and water:
CxH2x+2 + [(3x+1)/2] O2  xCO2 + (x+1) H2O
diesel engines --- reduce hydrocarbon and carbon monoxide emission.
gasoline engines until 1975.

9. Three-Way (Oxidation- Reduction)
3 simultaneous tasks:
Reduction of nitrogen oxides to nitrogen and oxygen:
2NOx → xO2 + N2
Carbon monoxide burns with oxygen to form carbon dioxide:
 2CO + O2 → 2CO2
Hydrocarbons burn with oxygen to form carbon dioxide and water:
CxH2x+2 + [(3x+1)/2]O2 → xCO2 + (x+1)H2O
have been used since 1975.
for vehicle emission control system.

10. How They Work?

11. For the future

12. Quiz Time
Question #1:
What year did the catalytic converter make its debut?
A B-1975 C-1985
THE ANSWER IS ‘B’

13. Quiz Time
Question #2:
In chemistry, what is the name of a substance that causes or accelerates a chemical reaction without itself being affected?
A- Cascade B- Cathode C- Catalyst
THE ANSWER IS ‘C’

14. Quiz Time
Question #3:
A standard catalytic converter contains several hundred dollars worth of what materials?
A- Gold, silver and bronze
B- Platinum, palladium and rhodium
C- Chromium, platinum and silver
THE ANSWER IS ‘B’

15. Thanks for listening to me 
The End
Thanks for listening to me 

16. REFERENCES http://auto.howstuffworks.com/catalytic-converter-quiz.htm