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公开(公告)号：US12023652B2
公开(公告)日：2024-07-02
申请号：US17437972
申请日：2020-03-10
Applicant: Cataler Corporation
Inventor： Takahiro Noguchi , Ryota Onoe , Ryo Tasaki , Momoko Iwai , Yamato Matsushita
CPC classification number: B01J23/464 , B01J23/42 , B01J23/44 , B01J35/19 , F01N3/20 , F01N2570/10 , F01N2570/12 , F01N2570/14
Abstract: An exhaust gas purification catalyst provides excellent removal performance of methane, which is chemically stable. Exhaust gas purification catalyst includes a substrate that divides cells through which an exhaust gas flows and a catalyst layer that is provided on a surface of the substrate. The catalyst layer includes a palladium layer containing palladium that extends from a first end part which is an end part on the side into which an exhaust gas in the cells flows to a second end part which is an end part on the side from which an exhaust gas flows out, a platinum layer containing platinum that extends from the second end part to the first end part, and a rhodium layer containing rhodium that is laminated with both the palladium layer and the platinum layer.
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公开(公告)号：US20230364589A1
公开(公告)日：2023-11-16
申请号：US18352116
申请日：2023-07-13
Applicant: CATALER CORPORATION
Inventor： Ryo Tasaki , Ryota Onoe , Momoko Iwai , Yamato Matsushita
CPC classification number: B01J23/58 , B01J35/006 , B01J35/04 , B01J37/0242
Abstract: An exhaust gas-purifying catalyst includes a catalyst-coated filter. The catalyst-coated filter includes a filter substrate and a catalyst layer on a pore wall of the filter substrate. The exhaust gas-purifying catalyst has a first end, a second end, a porous wall, a first cell, and a second cell. The first cell is closed at the second end, the second cell is closed at the first end, and the first cell and the second cell are adjacent to each other with the porous wall interposed therebetween. At a surface of the porous wall on the first cell side, a proportion SS/S of a total area SS of pores having an opening diameter of less than 40 μm in a total area S of all pores is 65% or more.
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公开(公告)号：US12201965B2
公开(公告)日：2025-01-21
申请号：US18404981
申请日：2024-01-05
Applicant: Cataler Corporation
Inventor： Takahiro Noguchi , Ryota Onoe , Ryo Tasaki , Momoko Iwai , Yamato Matsushita
Abstract: An exhaust gas purification catalyst provides excellent removal performance of methane, which is chemically stable. Exhaust gas purification catalyst includes a substrate that divides cells through which an exhaust gas flows and a catalyst layer that is provided on a surface of the substrate. The catalyst layer includes a palladium layer containing palladium that extends from a first end part which is an end part on the side into which an exhaust gas in the cells flows to a second end part which is an end part on the side from which an exhaust gas flows out, a platinum layer containing platinum that extends from the second end part to the first end part, and a rhodium layer containing rhodium that is laminated with both the palladium layer and the platinum layer.
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公开(公告)号：US20240280038A1
公开(公告)日：2024-08-22
申请号：US18568875
申请日：2021-12-09
Applicant: Cataler Corporation
Inventor： Ryo Tasaki , Ryota Onoe , Masaya Ito , Momoko Iwai , Yamato Matsushita
CPC classification number: F01N3/035 , F01N3/0224 , F01N2510/068
Abstract: The technology disclosed herein provides a particulate filter that can appropriately avoid PM from passing toward the outlet cell and can exhibit an excellent PM capturing performance. The particulate filter 1 disclosed herein includes: an outercoat layer 20 provided on an inlet surface 16a of a partition 16 of a base material 10. The outercoat layer 20 at least includes: a lower layer 22 provided on the inlet surface 16a of the partition 16; and an upper layer 24 provided to cover the lower layer 22. The mean particle diameter of granules contained in the upper layer 24 is higher than the mean particle diameter of granules contained in the lower layer. The mean particle diameter of the granules in the lower layer 22 is from 0.4 μm to 2.0 μm inclusive, and the mean particle diameter of the granules in the upper layer 24 is from 2.0 μm to 7.0 μm inclusive. With such a configuration, PM can be captured in an inlet cell 12, thereby suitably avoiding PM from passing toward an outlet cell 14 and exhibiting an excellent PM capturing performance.
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公开(公告)号：US11808188B2
公开(公告)日：2023-11-07
申请号：US17618082
申请日：2020-06-26
Applicant: Cataler Corporation
Inventor： Ryo Tasaki , Ryota Onoe , Momoko Iwai , Yamato Matsushita
IPC: F01N3/022 , B01D46/82 , B01D46/24 , B01D53/94 , B01J21/04 , B01J23/02 , B01J23/58 , B01J35/00 , B01J35/04 , F01N3/035 , F01N3/023 , F01N9/00 , F01N3/021 , F01N3/025 , F01N3/28
CPC classification number: F01N3/022 , B01D46/2474 , B01D46/82 , B01D53/94 , B01J21/04 , B01J23/02 , B01J23/58 , B01J35/0006 , B01J35/04 , F01N3/035 , B01D2255/1023 , B01D2255/9022 , B01D2255/9155 , B01D2279/30 , F01N3/021 , F01N3/023 , F01N3/0253 , F01N3/2882 , F01N9/002 , F01N2250/02 , F01N2330/06 , F01N2370/24 , F01N2510/063 , F01N2510/0682 , F01N2510/0684
Abstract: A particulate filter disclosed herein includes a wall-flow structure substrate 10 and a wash coat layer 20 held inside a partition 16 of the substrate 10. The wash coat layer 20 includes an inlet layer 22 formed to have predetermined length LA and thickness TA from near an end thereof on an exhaust gas inflow side X1, and an outlet layer 24 formed to have predetermined length LB and thickness TB from near an end thereof on an exhaust gas outflow side X2. The inlet layer 22 and the outlet layer 24 partially overlap each other. In the particulate filter disclosed herein, the inlet layer 22 contains a precious metal catalyst, while the outlet layer 24 contains substantially no precious metal catalyst. The length LA of the inlet layer is 50% or more and 75% or less of a total length L of the partition 16. Thus, the particulate filter is capable of achieving both PM collection performance and pressure-drop reduction performance at high levels.
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Patent Agency Ranking
公开(公告)号：US20220316372A1
公开(公告)日：2022-10-06
申请号：US17618082
申请日：2020-06-26
Applicant: Cataler Corporation
Inventor： Ryo Tasaki , Ryota Onoe , Momoko Iwai , Yamato Matsushita
IPC: F01N3/022 , F01N3/035 , B01D46/24 , B01D46/82 , B01D53/94 , B01J23/02 , B01J21/04 , B01J23/58 , B01J35/04 , B01J35/00
Abstract: A particulate filter disclosed herein includes a wall-flow structure substrate 10 and a wash coat layer 20 held inside a partition 16 of the substrate 10. The wash coat layer 20 includes an inlet layer 22 formed to have predetermined length LA and thickness TA from near an end thereof on an exhaust gas inflow side X1, and an outlet layer 24 formed to have predetermined length LB and thickness TB from near an end thereof on an exhaust gas outflow side X2. The inlet layer 22 and the outlet layer 24 partially overlap each other. In the particulate filter disclosed herein, the inlet layer 22 contains a precious metal catalyst, while the outlet layer 24 contains substantially no precious metal catalyst. The length LA of the inlet layer is 50% or more and 75% or less of a total length L of the partition 16. Thus, the particulate filter is capable of achieving both PM collection performance and pressure-drop reduction performance at high levels.
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7.发明申请公开(公告)号：US20250001406A1
公开(公告)日：2025-01-02
申请号：US18704504
申请日：2022-09-28
Applicant: Cataler Corporation
Inventor： Tatsuhiro Oshima , Tatsuya Ohashi , Ryo Tasaki
Abstract: The present disclosure provides a technology of reducing migration of a noble metal catalyst in high temperature environments and reducing degradation of temperature characteristics. The production method disclosed herein includes: preparing an SiC base material 10 which has partitions 16 partitioning multiple cells and contains SiC; and forming a Pd catalyst layer 20 containing at least Pd particles 22 on surfaces of the partitions 16 of the SiC base material 10. In the production method disclosed herein, in the forming of the catalyst layer, the Pd catalyst layer 20 is formed by causing the Pd particles 22 to be carried directly on an Si member containing Si or SiC (for example, the partitions 16 of the SiC base material 10). Contacting between the Si member (SiC base material 10) and the Pd particles 22 in advance reduces migration and aggregation of the Pd particles 22 in high temperature environment and reduces degradation of temperature characteristics.
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公开(公告)号：US11454149B2
公开(公告)日：2022-09-27
申请号：US17285290
申请日：2019-10-30
Applicant: CATALER CORPORATION
Inventor： Ryota Onoe , Ryo Tasaki , Momoko Iwai , Yamato Matsushita
IPC: F01N3/021 , B01D46/24 , B01D53/94 , B01J23/63 , B01J35/04 , F01N3/28 , F01N3/022 , F01N3/10 , F01N3/20
Abstract: Provided is a particulate filter in which a PM collection rate is stably increased. The particulate filter according to the present invention includes a substrate 10 having a wall flow structure having a porous partition wall 16 that partitions an inlet cell and an outlet cell, and a wash coat layer held on surfaces of internal pores of the partition wall. In addition, average filling rates A, B, and C of the wash coat layer measured for each predetermined pore diameter range in the internal pores satisfy specific relationships. Further, the wash coat layer is formed in a region that occupies 50% or more of a thickness of the partition wall, and an amount of a noble metal catalyst carried by the wash coat layer is 0 g/L or more but 0.2 g/L or less.
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公开(公告)号：US20220154621A1
公开(公告)日：2022-05-19
申请号：US17439456
申请日：2020-03-10
Applicant: Cataler Corporation
Inventor： Takahiro Noguchi , Ryota Onoe , Ryo Tasaki , Momoko Iwai , Yamato Matsushita
Abstract: An exhaust gas purification catalyst for providing removal performance of methane, which is chemically stable includes a substrate that divides cells through which an exhaust gas flows and a catalyst layer that is provided on a surface of the substrate. The catalyst layer includes a palladium layer containing palladium that extends from a first end part which is an end part on the side of the cells into which an exhaust gas flows to a second end part which is an end part on the side from which an exhaust gas flows out, a platinum layer containing platinum that extends from the second end part to the first end part, and a rhodium layer containing rhodium that is laminated on both the palladium layer and the platinum layer.
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公开(公告)号：US20210381413A1
公开(公告)日：2021-12-09
申请号：US17285290
申请日：2019-10-30
Applicant: CATALER CORPORATION
Inventor： Ryota Onoe , Ryo Tasaki , Momoko Iwai , Yamato Matsushita
Abstract: Provided is a particulate filter in which a PM collection rate is stably increased. The particulate filter according to the present invention includes a substrate 10 having a wall flow structure having a porous partition wall 16 that partitions an inlet cell and an outlet cell, and a wash coat layer held on surfaces of internal pores of the partition wall. In addition, average filling rates A, B, and C of the wash coat layer measured for each predetermined pore diameter range in the internal pores satisfy specific relationships. Further, the wash coat layer is formed in a region that occupies 50% or more of a thickness of the partition wall, and an amount of a noble metal catalyst carried by the wash coat layer is 0 g/L or more but 0.2 g/L or less.
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