Method for treating an exhaust gas stream of a diesel or lean mixture combustion

摘要

A method of dealing with diesel engine exhaust flow or burning lean mixture The method includes: linking the exhaust flux with ammonia and a catalyst, the catalyst includes a porous coating of non zeollitico cu-sapo-34 molecular sieve, the crystal structure of which is Cha, and is ion exchanged, There, the catalyst can effectively promote the reaction of ammonia and nitrogen oxide to form nitrogen and h832222; or in the exhaust flow, in the presence of oxygen selectively, porous coating is deposited on the substrate.