Non-precious metal three way catalyst

Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide

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502302, 502304, 502324, 502337, 502338, 502344, 502355, 502524, 502525, 4232132, 4232135, B01J 2310, B01J 2326, B01J 2334

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active

051822490

ABSTRACT:
A non-precious metal three-way catalyst which reduces hydrocarbon, carbon monoxide, and nitrogen oxide from internal combustion engine exhaust and industrial emissions, with a conversion capability comparable to the conversion efficiencies of current precious metal catalysts, and with superior NO.sub.x conversion characteristics, and durable when operated under prolonged high temperature conditions. The light-off temperature is close to the light-off temperature of convertional precious metal catalysts. The active catalytic components in this catalyst are a mixture of rare-earth metal and non-noble metal oxides.

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