MOHAWK ®. CATALYTIC CONVERTER. Introduction. M illions of cars on the road are a source of air pollution. T he amount of pollution that all the cars produce together can create big problems.
The exhaust from the combustion in a cars engine is comprised of six main ingredients.
a)Location of catalytic converter
The catalytic converter consists of several components:
- increases the amount of surface area
-support the catalyst. Also called a "catalyst support“.
b) Ceramic honeycomb
c) Stainless steel honeycomb
A wash coat is used to make converters more efficient because a mixture of silica and alumina.
-will forms a rough and irregular surface.
-more surface area.
- therefore more places for active precious metal sites.
- The catalyst is added to the wash coat before applied it to the core.
2NOx → xO2 + N2
2CO + O2 → 2CO2
carbon dioxide and water:
CxH2x+2 + 2xO2 → xCO2 + 2xH2O
-Oxidation catalysts may be fitted to either petrol or diesel cars.
-The catalyst oxidises is effective at pollutants formed by incomplete combustion to carbon dioxide and water, and also for hydrocarbons, aldehydes and carbon monoxide. However, they do not reduce NOx emissions.
- external location
-valuable metal (platinum, palladium, and rhodium)