catalisador, dispositivo composto por um catalisador, método de preparação de um catalisador, método de redução dos óxidos de azoto, veículo compreendendo o catalisador e instalação estacioária insistindo do referido catalisador

摘要

The present invention relates to a catalyst containing a mixture of alumina, titanium oxide, and silver, the silver content being greater than 3% and less than 5% of the total weight of the catalyst, to a device including such a catalyst deposited onto an integral part, to a method for reducing nitrogen oxides in a gaseous effluent containing nitrogen oxides and sulfur derivatives, and to a vehicle or boat, construction equipment, locomotive, or stationary facility including an engine and an exhaust line connected to the outlet of the engine, characterized in that the catalyst or the device is arranged in the exhaust line.