alleryStart learning →Which catalyst coats the surface of most modern three way catalytic converters?
AAn iron and cobalt catalyst
BA platinum and rhodium catalyst
CA nickel and copper catalyst
DA zinc and magnesium catalyst
Answer & Solution
Correct answer: B. A platinum and rhodium catalyst
1. A catalytic converter is a heterogeneous catalyst, a solid working on exhaust gases.
2. Its surface is impregnated with a platinum and rhodium blend.
3. That blend turns nitric oxide into nitrogen and oxygen.
4. It also burns carbon monoxide and hydrocarbons through to carbon dioxide and water vapour.
5. Nickel is the catalyst used for hydrogenating fats and oils, which is a different application.
_Source: OpenStax Chemistry (CC BY 4.0), Ch 12 "Kinetics", section 12.7 Catalysis_
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