System for removing nitrogen oxides from an exhaust gas

摘要

A system for removing nitrogen oxides from an exhaust gas comprising: a catalyst layer comprising monolithic structural catalyst bodies, the monolithic structural catalyst bodies operable to selectively catalytically decompose ammonia in excess of the stoichiometric reaction equivalent of nitrogen oxides in the exhaust gas while catalytically reducing nitrogen oxides by reaction with ammonia not selectively catalytically decomposed.