发明名称 |
Catalytic Article for Treating Exhaust Gas |
摘要 |
Provided is a catalytic article comprising (a) a flow through honeycomb substrate having channel walls; (b) a first NH3-SCR catalyst composition coated on and/or within the channel walls in a first zone; and (c) a second NH3-SCR catalyst composition coated on and/or within the channel walls in a second zone, provided that the first zone is upstream of the second zone and the first and second zones are adjacent or at least partially overlap; and wherein the first NH3-SCR catalyst comprises a first copper loaded molecular sieve having a copper to aluminum atomic ratio of about 0.1 to 0.375 and the second NH3-SCR catalyst comprises a second copper loaded molecular sieve having a copper-to-aluminum atomic ratio of about 0.3 to about 0.6. |
申请公布号 |
US2016008759(A1) |
申请公布日期 |
2016.01.14 |
申请号 |
US201514713453 |
申请日期 |
2015.05.15 |
申请人 |
Johnson Matthey Public Limited Company |
发明人 |
SONNTAG Olivier;GENSCHOW Tim;SMEDLER Gudmund;WALKER Andrew Peter;LARSSON Mikael;MARKATOU Penelope;ZHANG Lingzhi;GAST Jane |
分类号 |
B01D53/86;B01J35/00;B01J29/76;B01J35/04;B01J29/85;B01J29/072 |
主分类号 |
B01D53/86 |
代理机构 |
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代理人 |
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主权项 |
1. A catalytic article comprising:
a. a flow through honeycomb substrate having an inlet side, an outlet side, an axial length from the inlet side to the outlet side, and a plurality of channels defined by channel walls extending from the inlet side to the outlet side; b. a first NH3-SCR catalyst composition coated on and/or within the channel walls in a first zone; and c. a second NH3-SCR catalyst composition coated on and/or within the channel walls in a second zone, provided that the first zone is upstream of the second zone and the first and second zones are adjacent or at least partially overlap;
wherein the first NH3-SCR catalyst comprises a first copper loaded molecular sieve having a copper to aluminum atomic ratio of about 0.1 to 0.375 and the second NH3-SCR catalyst comprises a second copper loaded molecular sieve having a copper-to-aluminum atomic ratio of about 0.3 to about 0.6. |
地址 |
London GB |