发明申请
- 专利标题： Catalyst for Treating Exhaust Gas
- 专利标题（中）： 催化剂处理废气
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申请号： US14362018申请日： 2012-11-30
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公开(公告)号： US20140328738A1公开(公告)日： 2014-11-06
- 发明人: Guy Richard Chandler , Stuart David Reid , Alexander Nicholas Michael Green , Paul Richard Phillips
- 申请人： Johnson Matthey Public Limited Company
- 国际申请： PCT/GB2012/052957 WO 20121130
- 主分类号： B01J29/76
- IPC分类号： B01J29/76 ; B01D53/94
摘要：
Provided is a metal promoted, low SAR zeolite-based SCR catalyst having at least about 1.35 weight percent of cerium, based on the total weight of the zeolite, wherein said cerium is present in a form selected from exchanged cerium ions, monomeric ceria, oligomeric ceria, and combinations thereof, provided that said oligomeric ceria has a particle size of less than 5 μm, the catalyst having superior durability after hydrothermal aging.