发明名称 |
HIGH SILICA CHABAZITE FOR SELECTIVE CATALYTIC REDUCTION, METHODS OF MAKING AND USING SAME |
摘要 |
There is disclosed a microporous crystalline material comprising a metal containing chabazite having a crystal size greater than 0.5 microns and a silica-to-alumina ratio (SAR) greater than 15, wherein the metal containing chabazite retains at least 80% of its initial surface area and micropore volume after exposure to temperatures of up to 900° C. in the presence of up to 10 volume percent water vapor for up to 1 hour. Methods of using the disclosed crystalline material, such as in the SCR of NOx in exhaust gas are also disclosed, as are methods of making such materials.
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申请公布号 |
US2010092362(A1) |
申请公布日期 |
2010.04.15 |
申请号 |
US20090641201 |
申请日期 |
2009.12.17 |
申请人 |
PQ CORPORATION |
发明人 |
LI HONG-XIN;CORMIER WILLIAM E.;MODEN BJORN |
分类号 |
B01D53/94;B01J29/06;B01J29/072 |
主分类号 |
B01D53/94 |
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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