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公开(公告)号：US20210262371A1
公开(公告)日：2021-08-26
申请号：US17249097
申请日：2021-02-19
发明人： Hai-Ying CHEN , Hongyu JI , Dongsheng QIAO , Eric TYO , Takashi YAMADA , Xiang ZHENG
摘要： A three-way catalyst article, and its use in an exhaust system for internal combustion engines, is disclosed. The catalyst article for treating exhaust gas comprising: a substrate comprising an inlet end and an outlet end with an axial length L; a first catalytic region comprising a first platinum group metal (PGM) component and a first oxygen storage capacity (OSC) material, wherein the first OSC material has a fresh specific surface area (SSA) of at least 10 m2/g; and wherein the first OSC material has an SSA difference of no more than 30 m2/g between the fresh first OSC material and the aged first OSC material.
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2.发明授权公开(公告)号：US12115520B2
公开(公告)日：2024-10-15
申请号：US17936090
申请日：2022-09-28
发明人： Dongsheng Qiao , Jingwen Wang , Xiang Zheng
CPC分类号： B01J23/8926 , B01D53/86 , B01J21/04 , B01J21/066 , B01J23/10 , B01J23/8906 , B01J35/19 , F01N3/101 , F01N3/106 , B01D2255/1021 , B01D2255/20738 , B01D2255/20761
摘要： A three-way catalyst article, and its use in an exhaust system for compressed natural gas engines, is disclosed. The catalyst article for treating exhaust gas from compressed natural gas (CNG) engine comprising: a substrate comprising an inlet end, an outlet end with an axial length L; a first catalytic region beginning at the outlet end and extending for less than the axial length L, wherein the first catalytic region comprises a first zeolite; and a second catalytic region beginning at the inlet end, wherein the second catalytic region comprises a second platinum group metal (PGM) component, a second oxygen storage capacity (OSC) material, and a second inorganic oxide; wherein the second PGM component is selected from the group consisting of palladium, platinum, rhodium or a combination thereof.
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3.发明授权公开(公告)号：US11364485B2
公开(公告)日：2022-06-21
申请号：US17301737
申请日：2021-04-13
发明人： Dongsheng Qiao , Jingwen Wang , Xiang Zheng
IPC分类号： B01J23/10 , B01J23/44 , B01J23/46 , B01J35/00 , B01J37/03 , B01J37/08 , B01D53/94 , F01N3/10 , F01N3/28 , F02B43/10
摘要： A three-way catalyst article, and its use in an exhaust system for compressed natural gas engines, is disclosed. The catalyst article for treating exhaust gas from compressed natural gas (CNG) engine comprising: a substrate comprising an inlet end, an outlet end with an axial length L; a first catalytic region beginning at the outlet end and extending for less than the axial length L, wherein the first catalytic region comprises a first PGM component; and a second catalytic region beginning at the inlet end, wherein the second catalytic region comprises a second PGM component; wherein the first PGM component comprises palladium, platinum, or a combination thereof; and wherein the second PGM component comprises rhodium.
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公开(公告)号：US20240109035A1
公开(公告)日：2024-04-04
申请号：US18465187
申请日：2023-09-12
发明人： Dongsheng QIAO , Zhou SHANG
CPC分类号： B01D53/945 , B01D53/9477 , B01J23/63 , F01N3/0814 , F01N3/101
摘要： A three-way catalyst article, and its use in an exhaust system for internal combustion engines, is disclosed. The catalyst article for treating exhaust gas comprising: a substrate comprising an inlet end and an outlet end with an axial length L; a first catalytic region comprising a first platinum group metal (PGM) component and a first Nd component, wherein the first PGM component comprises platinum, and wherein the weight ratio between Nd and Pt in the first catalytic region is at least 2:1.
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5.发明申请公开(公告)号：US20210331142A1
公开(公告)日：2021-10-28
申请号：US17301737
申请日：2021-04-13
发明人： Dongsheng QIAO , Jingwen WANG , Xiang ZHENG
IPC分类号： B01J23/44 , B01J23/10 , B01J35/00 , B01J37/03 , B01J23/46 , B01J37/08 , F01N3/10 , F01N3/28 , F02B43/10 , B01D53/94
摘要： A three-way catalyst article, and its use in an exhaust system for compressed natural gas engines, is disclosed. The catalyst article for treating exhaust gas from compressed natural gas (CNG) engine comprising: a substrate comprising an inlet end, an outlet end with an axial length L; a first catalytic region beginning at the outlet end and extending for less than the axial length L, wherein the first catalytic region comprises a first PGM component; and a second catalytic region beginning at the inlet end, wherein the second catalytic region comprises a second PGM component; wherein the first PGM component comprises palladium, platinum, or a combination thereof; and wherein the second PGM component comprises rhodium.
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公开(公告)号：US20210299647A1
公开(公告)日：2021-09-30
申请号：US17249924
申请日：2021-03-18
发明人： Hongyu JI , Wataru KURASHIGE , Shuhei NAGAOKA , Dongsheng QIAO , Zhou SHANG , Xiaorui ZHANG
摘要： A three-way catalyst article, and its use in an exhaust system for internal combustion engines, is disclosed. The catalyst article for treating exhaust gas comprising: a substrate comprising an inlet end and an outlet end with an axial length L; a first catalytic region comprising a first platinum group metal (PGM) component and a first PGM support material, wherein the first catalytic region comprises up to 5 wt. % Sn.
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公开(公告)号：US20240001343A1
公开(公告)日：2024-01-04
申请号：US18335183
申请日：2023-06-15
发明人： Dongsheng QIAO , Jingwen WANG
IPC分类号： B01J23/46 , B01J23/42 , B01J23/44 , B01J23/10 , B01J23/02 , B01J35/00 , B01J35/04 , B01D53/94 , F01N3/10
CPC分类号： B01J23/464 , B01J23/42 , B01J23/44 , B01J23/10 , B01J23/02 , B01J35/0006 , B01J35/04 , B01D53/945 , B01D53/9454 , B01D53/9468 , B01D53/9472 , F01N3/101 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/40 , B01D2255/908 , B01D2255/9022 , B01D2255/9025 , B01D2255/9032 , B01D2255/904
摘要： A three-way catalyst article, and its use in an exhaust system for compressed natural gas engines, is disclosed. The catalyst article for treating exhaust gas from compressed natural gas (CNG) engine comprising: a substrate comprising an inlet end, an outlet end with an axial length L; a first catalytic region beginning at the inlet end and extending for less than the axial length L, wherein the first catalytic region comprises a first platinum component; a second catalytic region beginning at the outlet end and extending for less than the axial length L, wherein the second catalytic region comprises a second palladium component; and a third catalytic region, wherein the third catalytic region comprises a third rhodium component.
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公开(公告)号：US11745173B2
公开(公告)日：2023-09-05
申请号：US17249924
申请日：2021-03-18
发明人： Hongyu Ji , Wataru Kurashige , Shuhei Nagaoka , Dongsheng Qiao , Zhou Shang , Xiaorui Zhang
IPC分类号： B01J21/04 , B01J21/06 , B01J21/08 , B01J21/12 , B01J23/10 , B01J23/14 , B01J23/42 , B01J23/44 , B01J23/46 , B01J23/62 , B01J23/63 , B01J35/00 , B01J35/02 , F01N3/10 , F01N3/28 , B01J37/02
CPC分类号： B01J37/0201 , B01J21/066 , B01J23/42 , B01J23/464 , B01J35/0006 , B01J35/023 , F01N3/101 , F01N3/2803 , F01N2370/02
摘要： A three-way catalyst article, and its use in an exhaust system for internal combustion engines, is disclosed. The catalyst article for treating exhaust gas comprising: a substrate comprising an inlet end and an outlet end with an axial length L; a first catalytic region comprising a first platinum group metal (PGM) component and a first PGM support material, wherein the first catalytic region comprises up to 5 wt. % Sn.
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公开(公告)号：US11614013B2
公开(公告)日：2023-03-28
申请号：US17249097
申请日：2021-02-19
发明人： Hai-Ying Chen , Hongyu Ji , Dongsheng Qiao , Eric Tyo , Takashi Yamada , Xiang Zheng
摘要： A three-way catalyst article, and its use in an exhaust system for internal combustion engines, is disclosed. The catalyst article for treating exhaust gas comprising: a substrate comprising an inlet end and an outlet end with an axial length L; a first catalytic region comprising a first platinum group metal (PGM) component and a first oxygen storage capacity (OSC) material, wherein the first OSC material has a fresh specific surface area (SSA) of at least 10 m2/g; and wherein the first OSC material has an SSA difference of no more than 30 m2/g between the fresh first OSC material and the aged first OSC material.
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