Catalysts to reduce NO.sub.x in an exhaust gas stream and methods of preparation [electronic resource]

• Ngôn ngữ: eng
• Ký hiệu phân loại: 623.8 Nautical engineering and seamanship
• Thông tin xuất bản: Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2011
• Mô tả vật lý: Medium: ED : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 266062
• Chủ đề: 1. 33 advanced propulsion systems

Tóm tắt

Catalysts, systems and methods are described to reduce NO.sub.x emissions of an internal combustion engine. In one embodiment, an emissions treatment system for an exhaust stream is provided having a catalyst comprising silver and a platinum group metal on a particulate alumina support, the atomic fraction of the platinum group metal being less than or equal to about 0.25. Methods of manufacturing catalysts are described in which silver is impregnated on alumina particles.