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公开(公告)号：US12023627B2
公开(公告)日：2024-07-02
申请号：US17661058
申请日：2022-04-28
申请人： BASF Corporation
CPC分类号： B01D53/9418 , B01D53/944 , B01D53/945 , B01D53/9495 , F01N3/0231 , F01N3/0821 , F01N3/2066 , B01D53/9477 , B01D2251/2067 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/9155 , B01D2258/012 , F01N2510/0682 , F01N2570/18 , F01N2610/02 , Y02T10/12
摘要： Zoned diesel oxidation catalysts containing a higher precious metal loading in the inlet zone that the outlet zone and an equal or shorter length inlet zone are described. Emission treatment systems and methods of remediating nitrogen oxides (NOx), particulate matter, and gaseous hydrocarbons using zoned diesel oxidation catalysts are also described.
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公开(公告)号：US20240307822A1
公开(公告)日：2024-09-19
申请号：US18675217
申请日：2024-05-28
申请人： BASF Corporation
CPC分类号： B01D53/9418 , B01D53/944 , B01D53/945 , B01D53/9495 , F01N3/0231 , F01N3/0821 , F01N3/2066 , B01D53/9477 , B01D2251/2067 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/9155 , B01D2258/012 , F01N2510/0682 , F01N2570/18 , F01N2610/02 , Y02T10/12
摘要： Zoned diesel oxidation catalysts containing a higher precious metal loading in the inlet zone that the outlet zone and an equal or shorter length inlet zone are described. Emission treatment systems and methods of remediating nitrogen oxides (NOx), particulate matter, and gaseous hydrocarbons using zoned diesel oxidation catalysts are also described.
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公开(公告)号：US11344845B2
公开(公告)日：2022-05-31
申请号：US15995316
申请日：2018-06-01
申请人： BASF Corporation
摘要： Zoned diesel oxidation catalysts containing a higher precious metal loading in the inlet zone that the outlet zone and an equal or shorter length inlet zone are described. Emission treatment systems and methods of remediating nitrogen oxides (NOx), particulate matter, and gaseous hydrocarbons using zoned diesel oxidation catalysts are also described.
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公开(公告)号：US11268420B2
公开(公告)日：2022-03-08
申请号：US16971236
申请日：2019-02-18
申请人： BASF Corporation
发明人： Kenneth E. Voss , Kevin A. Hallstrom , Sandip D. Shah , David M. Youngren , Andrew Thoms , M. Shahjahan Kazi , Robert Dorner
摘要： A system for treatment of an exhaust gas stream from an engine is provided, containing an upstream selective catalytic reduction (SCR) catalyst, which receives the exhaust gas stream without any intervening catalyst, a diesel oxidation catalyst (DOC) positioned downstream thereof; a catalyzed soot filter (CSF) downstream of the diesel oxidation catalyst; a second SCR catalyst positioned downstream of the catalyzed soot filter; and an ammonia oxidation (AMOx) catalyst. The application also describes use of such systems to reduce nitrogen oxides (NOx) and hydrocarbons (HC) in an exhaust gas stream.
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公开(公告)号：US11154815B2
公开(公告)日：2021-10-26
申请号：US15552183
申请日：2016-02-26
申请人： BASF Corporation
IPC分类号： B01D53/94
摘要： Described are exhaust gas treatment systems for treatment of an engine exhaust gas stream containing NOx. The exhaust gas treatment system comprises an engine, a catalyst system including a selective catalytic reduction article comprising two zones, an upstream zone comprising iron-promoted first molecular sieves and a downstream zone comprising copper-promoted second molecular sieves. The catalyst system is effective to reduce high NOx levels in the exhaust gas stream. Also described are methods for treatment of engine exhaust gas streams, comprising treating engine exhaust gas streams containing high NOx levels with catalyst systems including selective catalytic reduction articles having two zones.
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公开(公告)号：US20210079826A1
公开(公告)日：2021-03-18
申请号：US16971236
申请日：2019-02-18
申请人： BASF Corporation
发明人： Kenneth E. Voss , Kevin A. Hallstrom , Sandip D. Shah , David M. Youngren , Andrew Thoms , M. Shahjahan Kazi , Robert Dorner
摘要： A system for treatment of an exhaust gas stream from an engine is provided, containing an upstream selective catalytic reduction (SCR) catalyst, which receives the exhaust gas stream without any intervening catalyst, a diesel oxidation catalyst (DOC) positioned downstream thereof; a catalyzed soot filter (CSF) downstream of the diesel oxidation catalyst; a second SCR catalyst positioned downstream of the catalyzed soot filter; and an ammonia oxidation (AMOx) catalyst. The application also describes use of such systems to reduce nitrogen oxides (NOx) and hydrocarbons (HC) in an exhaust gas stream.
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公开(公告)号：US20180272280A1
公开(公告)日：2018-09-27
申请号：US15995316
申请日：2018-06-01
申请人： BASF Corporation
CPC分类号： B01D53/9418 , B01D53/944 , B01D53/945 , B01D53/9477 , B01D53/9495 , B01D2251/2067 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/9155 , B01D2258/012 , F01N3/0231 , F01N3/0821 , F01N3/2066 , F01N2510/0682 , F01N2570/18 , F01N2610/02 , Y02T10/22 , Y02T10/24
摘要： Zoned diesel oxidation catalysts containing a higher precious metal loading in the inlet zone that the outlet zone and an equal or shorter length inlet zone are described. Emission treatment systems and methods of remediating nitrogen oxides (NOx), particulate matter, and gaseous hydrocarbons using zoned diesel oxidation catalysts are also described.
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公开(公告)号：US20180045097A1
公开(公告)日：2018-02-15
申请号：US15552305
申请日：2016-03-18
申请人： BASF CORPORATION
CPC分类号： F01N3/208 , B01D53/9418 , B01D53/944 , B01D53/9477 , B01D2255/50 , B01D2255/9155 , B01D2257/404 , B01D2258/012 , B01J29/072 , B01J29/76 , B01J29/763 , B01J35/0006 , B01J35/04 , B01J37/0246 , B01J2229/18 , F01N3/035 , F01N2570/14 , F01N2610/02 , Y02A50/2325 , Y02A50/2345 , Y02T10/24
摘要： Provided are catalyst articles, methods and systems for treating lean burn engine exhaust. Catalyst articles include selective catalytic reduction catalyst on a particulate filter. The SCR catalyst on the particulate filter provides limited NOx conversion so that unconverted NO2 is available to facilitate passive oxidation of soot trapped on the particulate filter by reaction with NO2. Systems and methods utilize such catalytic articles, and further include, e.g., a downstream selective catalytic reduction catalyst on a flow through substrate.
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公开(公告)号：US20180043305A1
公开(公告)日：2018-02-15
申请号：US15552183
申请日：2016-02-26
申请人： BASF Corporation
IPC分类号： B01D53/94
CPC分类号： B01D53/9418 , B01D53/9436 , B01D53/944 , B01D53/9477 , B01D2251/2067 , B01D2255/102 , B01D2255/20738 , B01D2255/20761 , B01D2255/50 , B01D2255/9032 , B01D2258/012 , Y02T10/24
摘要： Described are exhaust gas treatment systems for treatment of an engine exhaust gas stream containing NOx. The exhaust gas treatment system comprises an engine, a catalyst system including a selective catalytic reduction article comprising two zones, an upstream zone comprising iron-promoted first molecular sieves and a downstream zone comprising copper-promoted second molecular sieves. The catalyst system is effective to reduce high NOx levels in the exhaust gas stream. Also described are methods for treatment of engine exhaust gas streams, comprising treating engine exhaust gas streams containing high NOx levels with catalyst systems including selective catalytic reduction articles having two zones.
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