| abstract |
The present invention relates to a kind of ammonia decomposition catalyzers and its purification method for the higher ammonia exhaust gas of moisture content.A kind of ammonia decomposition catalyzer, it is the catalyst for being handled the ammonia exhaust gas containing moisture, wherein, include: lower layer, with noble metal, inorganic oxide, phosphorus, the first proton type zeolite or with Cu, Co or Fe ion carry out ion exchange the first ion-exchange-type zeolite；And upper layer, it is set in above-mentioned lower layer, and the second ion-exchange-type zeolite of ion exchange is carried out with the second proton type zeolite or with Cu, Co or Fe ion. |