NON-NOBLE METAL COMBUSTION CATALYST AND PROCESS FOR ITS PREPARATION

摘要

Disclosed is a non-noble metal combustion catalyst of a honeycomb monolithic structure. The catalyst is composed of (i) a carrier made of silicate material, a second carrier in the form of a coating on the first carrier and being made of metallic oxides and (ii) a mixture of copper oxide, manganese oxide and a rare earth metal oxide as the catalytically active components. Also disclosed is a process for its preparation, which comprises immersing the first carrier in a first coating liquid, then drying and baking it for forming the second carrier coating layer and then immersing it in a second coating liquid, drying and baking for making the final catalyst. The catalyst is as active as a noble metal combustion catalyst but can be cheaper because expensive noble metals are not used.