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Catalytic composition based on alumina, manganese, potassium, rubidium or cesium and platinum and use thereof as nox trap in gas treatment
Catalytic composition based on alumina, manganese, potassium, rubidium or cesium and platinum and use thereof as nox trap in gas treatment
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机译:基于氧化铝,锰,钾,rub或铯和铂的催化组合物及其在气体处理中作为NOx捕集剂的用途
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摘要
Catalyst comprises: alumina doped with a rare earth selected from yttrium, cerium, lanthanum, praseodymium, neodymium and samarium; manganese; an alkali metal selected from potassium, rubidium and cesium; and platinum. The alkali metal/manganese atomic ratio is 1.5-5. Independent claims are also included for: (1) gas treatment to reduce nitrogen oxide (NOx) emissions by using the above catalyst as an NOx trap; and (2) catalytic system for gas treatment comprising a catalyst as above.
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