PREPARED BY; MUHAMMED DOĞAN 9/B 232

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Presentation transcript:

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

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

The Origin Eugene Houdry around 1950 for smoke stacks

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

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

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

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

Two-Way (Oxidation) 2 simultaneous task:  Carbon monoxide burns with oxygen to form carbon dioxide: 2CO + O2 2CO2 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.

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.

How They Work? http://www.fordscorpio.co.uk/cats.htm

For the future

Quiz Time Question #1: What year did the catalytic converter make its debut? A-1965 B-1975 C-1985 THE ANSWER IS ‘B’

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’

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’

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

REFERENCES http://auto.howstuffworks.com/catalytic-converter-quiz.htm http://www.obitet.gazi.edu.tr/obitet/yakitlar_yaglar/euro%202003%20emisyon1.htm http://www.fordscorpio.co.uk/cats.htm