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    • 1. 发明授权
    • Treatment of cold start engine exhaust
    • 冷启动发动机排气处理
    • US08580228B2
    • 2013-11-12
    • US11961776
    • 2007-12-20
    • Stacey I. ZonesCabral M. WilliamsTecle S. RufaelAllen W. Burton
    • Stacey I. ZonesCabral M. WilliamsTecle S. RufaelAllen W. Burton
    • C01B33/36B01D53/56B01D53/86B01J29/04B01J29/06B01J21/00
    • B01D53/945B01D53/04B01D53/9486B01D2253/104B01D2253/108B01D2255/102B01D2255/1021B01D2255/1023B01D2255/50B01D2259/4143B01J29/70B01J29/7007B01J29/80Y02A50/2324Y02C20/20Y02T10/22
    • The present invention relates to a process for reducing cold start emissions in an exhaust gas stream (such as from an internal combustion engine) by contacting the exhaust stream with a combination of molecular sieves comprising (1) a small pore crystalline molecular sieve or mixture of molecular sieves having pores no larger than 8 membered rings selected from the group consisting of SSZ-13, SSZ-16, SSZ-36, SSZ-39, SSZ-50, SSZ-52 and SSZ-73 molecular sieve and having a mole ratio at least 10 of (a) an oxide of a first tetravalent element to (b) an oxide of a trivalent element, pentavalent element, second tetravalent element which is different from said first tetravalent element or mixture thereof and (2) a medium-large pore crystalline molecular sieve having pores at least as large as 10 membered rings selected from the group consisting of SSZ-26, SSZ-33, SSZ-64, zeolite Beta, CIT-1, CIT-6 and ITQ-4 and having a mole ratio of at least 10 of (a) an oxide of a first tetravalent element to (b) an oxide of a trivalent element, pentavalent element, second tetravalent element which is different from said first tetravalent element or mixture thereof.
    • 本发明涉及通过使废气流与分子筛的组合接触来减少废气流(例如来自内燃机)中的冷启动排放的方法,所述分子筛包括(1)小孔结晶分子筛或 具有不大于8元环的分子筛,其选自SSZ-13,SSZ-16,SSZ-36,SSZ-39,SSZ-50,SSZ-52和SSZ-73分子筛,并且具有摩尔比 至少10个(a)第一四价元素的氧化物,(b)三价元素的氧化物,不同于所述第一四价元素或其混合物的五价元素,第二四价元素和(2)中等大小 孔结晶分子筛,其孔至少与选自SSZ-26,SSZ-33,SSZ-64,β沸石,CIT-1,CIT-6和ITQ-4组成的组中的10元环一样大,并具有摩尔 (a)第一四价元素的氧化物的至少10的比例 至(b)不同于所述第一四价元素或其混合物的三价元素的氧化物,五价元素,第二四价元素。
    • 2. 发明申请
    • TREATMENT OF COLD START ENGINE EXHAUST
    • 冷起动发动机排气的处理
    • US20080159936A1
    • 2008-07-03
    • US11961776
    • 2007-12-20
    • Stacey I. ZonesCabral M. WilliamsTecle S. RufaelAllen W. Burton
    • Stacey I. ZonesCabral M. WilliamsTecle S. RufaelAllen W. Burton
    • B01D53/44B01D53/72
    • B01D53/945B01D53/04B01D53/9486B01D2253/104B01D2253/108B01D2255/102B01D2255/1021B01D2255/1023B01D2255/50B01D2259/4143B01J29/70B01J29/7007B01J29/80Y02A50/2324Y02C20/20Y02T10/22
    • The present invention relates to a process for reducing cold start emissions in an exhaust gas stream (such as from an internal combustion engine) by contacting the exhaust stream with a combination of molecular sieves comprising (1) a small pore crystalline molecular sieve or mixture of molecular sieves having pores no larger than 8 membered rings selected from the group consisting of SSZ-13, SSZ-16, SSZ-36, SSZ-39, SSZ-50, SSZ-52 and SSZ-73 molecular sieve and having a mole ratio at least 10 of (a) an oxide of a first tetravalent element to (b) an oxide of a trivalent element, pentavalent element, second tetravalent element which is different from said first tetravalent element or mixture thereof and (2) a medium-large pore crystalline molecular sieve having pores at least as large as 10 membered rings selected from the group consisting of SSZ-26, SSZ-33, SSZ-64, zeolite Beta, CIT-1, CIT-6 and ITQ-4 and having a mole ratio of at least 10 of (a) an oxide of a first tetravalent element to (b) an oxide of a trivalent element, pentavalent element, second tetravalent element which is different from said first tetravalent element or mixture thereof.
    • 本发明涉及通过使废气流与分子筛的组合接触来减少废气流(例如来自内燃机)中的冷启动排放的方法,所述分子筛包括(1)小孔结晶分子筛或 具有不大于8元环的分子筛,其选自SSZ-13,SSZ-16,SSZ-36,SSZ-39,SSZ-50,SSZ-52和SSZ-73分子筛,并且具有摩尔比 至少10个(a)第一四价元素的氧化物,(b)三价元素的氧化物,不同于所述第一四价元素或其混合物的五价元素,第二四价元素和(2)中等大小 孔结晶分子筛,其孔至少与选自SSZ-26,SSZ-33,SSZ-64,β沸石,CIT-1,CIT-6和ITQ-4组成的组中的10元环一样大,并具有摩尔 (a)第一四价元素的氧化物的至少10的比例 至(b)不同于所述第一四价元素或其混合物的三价元素的氧化物,五价元素,第二四价元素。