AMMONIA-DECOMPOSING CATALYST, AND METHOD FOR TREATMENT OF AMMONIA-CONTAINING EXHAUST GAS WITH THE CATALYST

摘要

Disclosed are: a catalyst which can decompose ammonia into nitrogen that is non-toxic; and a method for treating an ammonia-containing exhaust gas. Specifically disclosed is an ammonia-decomposing catalyst, which is characterize by the following items (a) to (d): (a) the catalyst is one for treating an ammonia-containing exhaust gas; (b) the catalyst comprises copper oxide (component 1), zeolite (component 2), a noble metal (component 3), a phosphorus (component 4) and optionally an inorganic oxide (component 5); (c) the catalyst has a copper oxide content of 2 to 40 parts by weight relative to the total amount (100 parts by weight) of copper oxide and zeolite; and (d) the catalyst has a phosphorus content of 0.01 to 5 wt% relative to the total weight of copper oxide and zeolite in terms of P content.