发明名称 |
REDUCTION OF OXIDES OF NITROGEN IN A GAS STREAM USING BORON-CONTAINING MOLECULAR SIEVE CHA |
摘要 |
A process for reduction of oxides of nitrogen contained in a gas stream comprising contacting the gas stream with a boron-containing molecular sieve, the boron-containing molecular sieve having the CHA crystal structure and comprising (1) silicon oxide and (2) boron oxide or a combination of boron oxide and aluminum oxide, iron oxide, titanium oxide, gallium oxide and mixtures thereof; and wherein the mole ratio of silicon oxide to boron oxide in said boron-containing molecular sieve is between 15 and 125. A method for reduction of oxides of nitrogen, comprising a) selecting the boron-containing molecular sieve; and b) contacting a gas stream with the molecular sieve. A method for reduction of oxides, comprising: a) selecting the boron-containing molecular sieve containing a metal or metal ions capable of catalyzing the reduction of the oxides of nitrogen; and b) contacting an exhaust stream of an internal combustion engine with the molecular sieve.
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申请公布号 |
WO2009064725(A3) |
申请公布日期 |
2009.07.16 |
申请号 |
WO2008US83124 |
申请日期 |
2008.11.11 |
申请人 |
CHEVRON U.S.A. INC.;YUEN, LUN-TEH;ZONES, STACEY I. |
发明人 |
YUEN, LUN-TEH;ZONES, STACEY I. |
分类号 |
B01D53/86;B01D53/56;C01B39/48 |
主分类号 |
B01D53/86 |
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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