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公开(公告)号：US20200232366A1
公开(公告)日：2020-07-23
申请号：US16838751
申请日：2020-04-02
Applicant: BASF Corporation
Inventor： Yuejin Li , Xiaolai Zheng , Stanley Roth , Olga Gerlach , Andreas Sundermann
IPC: F01N3/20 , B01J37/02 , B01J23/63 , B01J23/52 , B01J23/46 , F01N3/28 , F01N3/10 , F01N3/08 , B01J37/08 , B01J35/04 , B01J33/00 , B01J23/44 , B01J23/42 , B01J35/10 , B01D53/94 , B01J23/10 , B01J35/00
Abstract: A nitrous oxide (N2O) removal catalyst composite is provided, comprising a N2O removal catalytic material on a substrate, the catalytic material comprising a rhodium (Rh) component supported on a ceria-based support, wherein the catalyst composite has a H2-consumption peak of about 100° C. or less as measured by hydrogen temperature-programmed reduction (H2-TPR). Methods of making and using the same are also provided.
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Patent Agency Ranking
公开(公告)号：US20200055035A1
公开(公告)日：2020-02-20
申请号：US16487447
申请日：2018-02-21
Applicant: BASF Corporation , N. E. CHEMCAT CORPORATION
Inventor： Xiaolai Zheng , Mahmuda Choudhury , Patrick Burk , Makoto Nagata , Yasuharu Kanno , Hiroki Nakayama
Abstract: The invention provides a selective catalytic reduction (SCR) catalyst effective in the abatement of nitrogen oxides (NOx), the SCR catalyst comprising a metal-promoted molecular sieve promoted with a metal selected from iron, copper, and combinations thereof, wherein the metal is present in an amount of 2.6% by weight or less on an oxide basis based on the total weight of the metal-promoted molecular sieve. A catalyst article, an exhaust gas treatment system method, and a method treating an exhaust gas stream, each comprising the SCR catalyst of the invention, are also provided. The SCR catalyst is particularly useful for treatment of exhaust from a lean burn gasoline engine.
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公开(公告)号：US10247071B2
公开(公告)日：2019-04-02
申请号：US15508744
申请日：2015-08-28
Applicant: BASF CORPORATION
Inventor： Xiaoming Wang , Michel Deeba , Xiaolai Zheng , Sven Titlbach , Andreas Sundermann , Stephan Andreas Schunk
IPC: F01N3/10 , B01D53/94 , B01J21/06 , B01J21/08 , B01J23/00 , B01J23/10 , B01J23/58 , B01J23/63 , B01J37/02 , B01J37/03 , B01J37/04 , B01J37/08 , B01J23/46 , B01J35/10 , B01J37/00
Abstract: Composites of mixed metal oxides for an exhaust gas purifying catalyst comprise the following co-precipitated materials by weight of the composite: zirconia in an amount in the range of 55-99%; titania in an amount in the range of 1-25%; a promoter and/or a stabilizer in an amount in the range of 0-20%. These composites are effective as supports for platinum group metals (PGMs), in particular rhodium.
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34.发明授权公开(公告)号：US09358503B2
公开(公告)日：2016-06-07
申请号：US14274300
申请日：2014-05-09
Applicant: BASF Corporation
Inventor： Chung-Zong Wan , Xiaolai Zheng , Susanne Stiebels , Claudia Wendt , Torsten Neubauer , R. Samuel Boorse
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。
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公开(公告)号：US20140248200A1
公开(公告)日：2014-09-04
申请号：US14274300
申请日：2014-05-09
Applicant: BASF Corporation
Inventor： Chung-Zong Wan , Xiaolai Zheng , Susanne Stiebels , Claudia Wendt , Torsten Neubauer , R. Samuel Boorse
IPC: B01D53/94
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.
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公开(公告)号：US20130336864A1
公开(公告)日：2013-12-19
申请号：US13916727
申请日：2013-06-13
Applicant: BASF CORPORATION
Inventor： Xiaolai Zheng , Xiaoming Wang , Knut Wassermann
CPC classification number: B01J23/63 , B01D53/945 , B01D2255/2065 , B01D2255/20715 , B01D2255/2092 , B01D2255/908 , B01J35/1019 , B01J35/1042 , B01J35/1047 , B01J37/0215 , B01J37/031 , B01J37/10 , B01J2523/00 , Y02T10/22 , B01J2523/36 , B01J2523/3706 , B01J2523/3712 , B01J2523/48 , B01J2523/31 , B01J2523/3725 , B01J2523/3718
Abstract: Provided are composites of mixed metal oxides comprising: a ceria-zirconia-alumina composite, wherein the alumina is present in an amount in the range of 1 to less than 30% by weight of the composite and the mixed metal oxide composite has a ceria reducibility of at least 50% after 12 hours of hydrothermal aging at 1050° C. In preparation thereof, a ceria-zirconia solid solution can optionally further comprise at least one rare earth oxide other than ceria and the alumina may be formed by using a colloidal alumina precursor. Methods of making and using these composites are also provided.
Abstract translation: 提供了包含二氧化铈 - 氧化锆 - 氧化铝复合材料的复合金属氧化物的复合材料，其中氧化铝的存在量为复合材料的1至小于30重量％，并且混合金属氧化物复合材料具有二氧化铈还原性 在1050℃下水热老化12小时后至少为50％。在其制备中，二氧化铈 - 氧化锆固溶体可以任选地还可包含至少一种除二氧化铈之外的稀土氧化物，氧化铝可以通过使用胶态氧化铝 前体 还提供了制备和使用这些复合材料的方法。
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