(i) The catalysts contain platinum. Suggest why a manufacturer of catalytic converters would want to use less catalyst
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The role of platinum in catalytic converters is to oxidise carbon monoxide (CO) and hydrocar- bons. ... The three-way catalyst used for petrol vehicles must also be able to reduce NOx to nitrogen as well as oxidise CO and hydrocarbons – that is why rhodium is generally used in addition to platinum or palladium.
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