发明名称 |
SCR CATALYSTS HAVING IMPROVED LOW TEMPERATURE PERFORMANCE, AND METHODS OF MAKING AND USING THE SAME |
摘要 |
SCR-active molecular-sieve based catalysts with improved low-temperature performance are made by heating a molecular-sieve in a non-oxidizing atmosphere with steam (hydrothermal treatment), or in a reducing atmosphere without steam (thermal treatment), at a temperature in the range of 600-900° C. for a time period from 5 minutes to two hours. The resulting SCR-active iron-containing molecular sieves exhibit a selective catalytic reduction of nitrogen oxides with NH3 or urea at 250° C. that is at least 50% greater than if the iron-containing molecular-sieve were calcined at 500° C. for two hours without performing the hydrothermal or thermal treatment. |
申请公布号 |
EP3110550(A1) |
申请公布日期 |
2017.01.04 |
申请号 |
EP20150708039 |
申请日期 |
2015.02.27 |
申请人 |
Johnson Matthey Public Limited Company |
发明人 |
CHANDLER, Guy Richard;COLLIER, Jillian Elaine;GREEN, Alexander Nicholas Michael;DURAN-MARTIN, Desiree;PHILLIPS, Paul Richard;RAJARAM, Raj Rao;REID, Stuart David |
分类号 |
B01J37/10;B01D53/94;B01J29/072;B01J29/46;B01J29/68;B01J29/76;B01J29/85;B01J37/02;B01J37/14;B01J37/16;B01J37/18 |
主分类号 |
B01J37/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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