公开(公告)号：US09999877B2

公开(公告)日：2018-06-19

申请号：US13645100

申请日：2012-10-04

Applicant: BASF SE

Inventor： Susanne Stiebels ,  Claudia Wendt ,  Torsten Neubauer ,  Svetlana Zimmermann

IPC: B01D53/56 ,  B01J29/04 ,  B01J29/88 ,  B01J29/80 ,  B01D53/94 ,  B01J37/02 ,  B01J29/46 ,  B01J29/76

CPC classification number: B01J29/04 ,  B01D53/565 ,  B01D53/9418 ,  B01D53/9477 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/502 ,  B01D2255/504 ,  B01D2258/012 ,  B01J29/46 ,  B01J29/7615 ,  B01J29/763 ,  B01J29/80 ,  B01J29/88 ,  B01J37/0244 ,  B01J37/0246

Abstract: The present invention relates to a catalyst, which may be used in selective catalytic reduction (SCR), said catalyst comprising one or more zeolites of the BEA structure type, one or more zeolites of the CHA structure type, and optionally one or more zeolites of the MFI structure type, wherein at least part of the one or more zeolites of the BEA structure type contain iron (Fe), wherein at least part of the one or more zeolites of the CHA structure type contain copper (Cu), and wherein at least part of the optional one or more zeolites of the MFI structure type contain iron (Fe). Furthermore, the present invention concerns an exhaust gas treatment system comprising said catalyst as well as a process for the treatment of a gas stream comprising NOx using said catalyst as well.

公开(公告)号：US20130089483A1

公开(公告)日：2013-04-11

申请号：US13645100

申请日：2012-10-04

Applicant: BASF SE

Inventor： Susanne Stiebels ,  Claudia Wendt ,  Torsten Neubauer ,  Svetlana Zimmermann

IPC: B01J29/04 ,  B01D53/94 ,  B01D53/56 ,  B01J29/88 ,  B01J29/80

CPC classification number: B01J29/04 ,  B01D53/565 ,  B01D53/9418 ,  B01D53/9477 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/502 ,  B01D2255/504 ,  B01D2258/012 ,  B01J29/46 ,  B01J29/7615 ,  B01J29/763 ,  B01J29/80 ,  B01J29/88 ,  B01J37/0244 ,  B01J37/0246

Abstract: The present invention relates to a catalyst, which may be used in selective catalytic reduction (SCR), said catalyst comprising one or more zeolites of the BEA structure type, one or more zeolites of the CHA structure type, and optionally one or more zeolites of the MFI structure type, wherein at least part of the one or more zeolites of the BEA structure type contain iron (Fe), wherein at least part of the one or more zeolites of the CHA structure type contain copper (Cu), and wherein at least part of the optional one or more zeolites of the MFI structure type contain iron (Fe). Furthermore, the present invention concerns an exhaust gas treatment system comprising said catalyst as well as a process for the treatment of a gas stream comprising NO using said catalyst as well.

Abstract translation: 本发明涉及可用于选择性催化还原（SCR）的催化剂，所述催化剂包含一种或多种BEA结构类型的沸石，一种或多种CHA结构型沸石，以及任选的一种或多种沸石 MFI结构类型，其中BEA结构类型的一种或多种沸石的至少一部分含有铁（Fe），其中CHA结构类型的一种或多种沸石的至少一部分含有铜（Cu），并且其中在 至少部分可选的一种或多种MFI结构型沸石含有铁（Fe）。 此外，本发明涉及包含所述催化剂的废气处理系统以及使用所述催化剂处理包含NO的气流的方法。

公开(公告)号：US20140047819A1

公开(公告)日：2014-02-20

申请号：US14046216

申请日：2013-10-04

Applicant: BASF SE

Inventor： Chung-Zong Wan ,  Xiaolai Zheng ,  Susanne Stiebels ,  Claudia Wendt ,  Torsten Neubauer ,  R. Samuel Boorse

IPC: F01N3/10

CPC classification number: B01D53/9431 ,  B01D53/58 ,  B01D53/92 ,  B01D53/9418 ,  B01D53/9422 ,  B01D53/9472 ,  B01D53/9477 ,  B01D2251/2062 ,  B01D2255/102 ,  B01D2255/2042 ,  B01D2255/2045 ,  B01D2255/206 ,  B01D2255/2063 ,  B01D2255/2066 ,  B01D2255/2068 ,  B01D2255/20753 ,  B01D2255/20761 ,  B01D2255/2092 ,  B01D2255/50 ,  B01D2255/9022 ,  B01D2255/91 ,  B01D2255/9155 ,  B01D2255/9205 ,  B01D2258/012 ,  F01N3/02 ,  F01N3/021 ,  F01N3/035 ,  F01N3/0807 ,  F01N3/0814 ,  F01N3/0821 ,  F01N3/0842 ,  F01N3/10 ,  F01N3/103 ,  F01N3/206 ,  F01N3/2066 ,  F01N3/2073 ,  F01N13/02 ,  F01N2510/063 ,  F01N2510/0682 ,  Y02T10/24

Abstract: Provided are emissions treatment systems for an exhaust stream having an ammonia-generating component, such as a NOx storage reduction (NSR) catalyst or a lean NOx trap (LNT) catalyst, and an SCR catalyst disposed downstream of the ammonia-generating catalyst. The SCR catalyst can be a molecular sieve having the CHA crystal structure, for example SSZ-13 or SAPO-34, which can be ion-exchanged with copper. The LNT can be layered, having an undercoat washcoat layer comprising a support material, at least one precious metal, and at least one NOx sorbent selected from the group consisting of alkaline earth elements, rare earth elements, and combinations thereof and a top washcoat layer comprising a support material, at least one precious metal, and ceria in particulate form, the top washcoat layer being substantially free of alkaline earth components. The emissions treatment system is advantageously used for the treatment of exhaust streams from diesel engines and lean burn gasoline engines.

Abstract translation: 提供了具有氨生成成分的排气流的排放处理系统，例如NOx储存还原（NSR）催化剂或稀NOx捕集器（LNT）催化剂，以及设置在产氨催化剂下游的SCR催化剂。 SCR催化剂可以是具有CHA晶体结构的分子筛，例如可与铜进行离子交换的SSZ-13或SAPO-34。 LNT可以是层状的，具有包含载体材料的底涂层涂层，至少一种贵金属和至少一种选自碱土金属元素，稀土元素及其组合的NO x吸附剂，以及顶部洗涂层 包括支撑材料，至少一种贵金属和颗粒形式的二氧化铈，所述顶部修补基面涂层基本上不含碱土金属组分。 排放物处理系统有利地用于处理来自柴油发动机和贫燃汽油发动机的废气流。