- Reduces levels of polluting gases in cars
- honeycomb coated in platinum = large SA
1. Carbon monoxide + Nitroen Oxides -> Nitrogen + Carbon Dioxide
2. Hydrocarbon + Nitrogen Oxides -> Nitrogen + Carbon Dioxide + Water
First Step
Gases form weak bonds w/ catalyst's metal atoms (absorbtion) This holds the gases in the right postition to react. Gases then react on the surface.
Second Step
Products break away from metal atoms (deabsorbtion). This creates room on the surface for more gases to react
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