Invention Grant
- Patent Title: Ammonia SCR catalyst and method of using the catalyst
- Patent Title (中): 氨SCR催化剂和催化剂的使用方法
-
Application No.: US12500322Application Date: 2009-07-09
-
Publication No.: US07767175B2Publication Date: 2010-08-03
- Inventor: Stephen J. Golden , Svetlana Iretskaya
- Applicant: Stephen J. Golden , Svetlana Iretskaya
- Applicant Address: US CA Ventura
- Assignee: Catalytic Solutions, Inc.
- Current Assignee: Catalytic Solutions, Inc.
- Current Assignee Address: US CA Ventura
- Agency: Reed Smith LLP
- Agent William J. McNichol, Jr.
- Main IPC: B01D53/56
- IPC: B01D53/56 ; B01D53/86 ; B01D53/94 ; F01N3/20

Abstract:
A DPF with an SCR catalyst and a method for selectively reducing nitrogen oxides with ammonia, filtering particulates, and reducing the ignition temperature of soot on a DPF are provided. The catalyst includes a first component of copper, chromium, cobalt, nickel, manganese, iron, niobium, or mixtures thereof, a second component of cerium, a lanthanide, a mixture of lanthanides, or mixtures thereof, and a component characterized by increased surface acidity. The catalyst may also include strontium as an additional second component. The catalyst selectively reduces nitrogen oxides to nitrogen with ammonia and oxidizes soot at low temperatures. The catalyst has high hydrothermal stability.
Public/Granted literature
- US20090304566A1 AMMONIA SCR CATALYST AND METHOD OF USING THE CATALYST Public/Granted day:2009-12-10
Information query
IPC分类: