发明名称 |
NOx absorber catalyst comprising caesium silicate and at least one platinum group metal |
摘要 |
A NOx storage component comprises caesium silicate (Cs2SiO3) and at least one platinum group metal. The invention also includes a NOx absorber catalyst comprising a NOx storage component according to the invention disposed on a substrate monolith; a method of treating exhaust gas containing NOx from a lean burn internal combustion engine comprising the steps of contacting a NOx storage component comprising caesium silicate (Cs2SiO3) and at least one platinum group metal with lean exhaust gas containing NOx to adsorb NOx thereon; and periodically desorbing adsorbed NOx by contacting the NOx storage component vent with stoichiometric or rich exhaust gas; and a method of making a NOx storage component according to the invention comprising the steps of combining and reacting an aqueous salt of at least one platinum group metal, an aqueous caesium salt and a source of silica.
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申请公布号 |
GB2484911(B) |
申请公布日期 |
2013.04.03 |
申请号 |
GB20100017870 |
申请日期 |
2010.10.22 |
申请人 |
JOHNSON MATTHEY PUBLIC LIMITED COMPANY |
发明人 |
JONATHAN ASHLEY COOPER;MICHAEL ANTHONY HOWARD |
分类号 |
B01J23/58;B01D53/94;B01J23/04;F01N3/08 |
主分类号 |
B01J23/58 |
代理机构 |
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