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公开(公告)号：US11602742B2
公开(公告)日：2023-03-14
申请号：US17178336
申请日：2021-02-18
Applicant: Koji Sugiura , Hiromasa Nishioka , Naoto Miyoshi , Akemi Sato , Ryota Nakashima , Masatoshi Ikebe , Keisuke Murawaki , Hirotaka Ori
Inventor： Koji Sugiura , Hiromasa Nishioka , Naoto Miyoshi , Akemi Sato , Ryota Nakashima , Masatoshi Ikebe , Keisuke Murawaki , Hirotaka Ori
IPC: B01J23/40 , B01J23/42 , B01J23/44 , B01J23/46 , B01J35/00 , B01J35/04 , B01D53/94 , B01D46/24 , F01N3/28
Abstract: Provided is an exhaust gas purification device that ensures an improved purification performance and a suppressed pressure loss. An exhaust gas purification device of the present disclosure includes a honeycomb substrate and an inflow cell side catalyst layer. disposed on a surface on the inflow cell side in an inflow side region of the partition wall. When a gas permeability coefficient of an inflow side partition wall portion including the inflow side region of the partition wall and the inflow cell side catalyst layer is Ka and a gas permeability coefficient of an outflow side partition wall portion including an outflow side region at least from the predetermined position to an outflow side end of the partition wall is Kb, a ratio Ka/Kb of the gas permeability coefficients is within a range of 0.4 or more and 0.8 or less.
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公开(公告)号：US20210283589A1
公开(公告)日：2021-09-16
申请号：US17178336
申请日：2021-02-18
Applicant: Koji SUGIURA , Hiromasa NISHIOKA , Naoto MIYOSHI , Akemi SATO , Ryota NAKASHIMA , Masatoshi IKEBE , Keisuke MURAWAKI , Hirotaka ORI
Inventor： Koji SUGIURA , Hiromasa NISHIOKA , Naoto MIYOSHI , Akemi SATO , Ryota NAKASHIMA , Masatoshi IKEBE , Keisuke MURAWAKI , Hirotaka ORI
Abstract: Provided is an exhaust gas purification device that ensures an improved purification performance and a suppressed pressure loss. An exhaust gas purification device of the present disclosure includes a honeycomb substrate and an inflow cell side catalyst layer. disposed on a surface on the inflow cell side in an inflow side region of the partition wall. When a gas permeability coefficient of an inflow side partition wall portion including the inflow side region of the partition wall and the inflow cell side catalyst layer is Ka and a gas permeability coefficient of an outflow side partition wall portion including an outflow side region at least from the predetermined position to an outflow side end of the partition wall is Kb, a ratio Ka/Kb of the gas permeability coefficients is within a range of 0.4 or more and 0.8 or less.
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3.发明申请公开(公告)号：US20200316578A1
公开(公告)日：2020-10-08
申请号：US16818239
申请日：2020-03-13
Applicant: Naoto MIYOSHI , Koji SUGIURA , Hiromasa NISHIOKA , Akemi SATO , Masatoshi IKEBE , Ryota NAKASHIMA , Yasutaka NOMURA , Hirotaka ORI
Inventor： Naoto MIYOSHI , Hiromasa NISHIOKA , Koji SUGIURA , Akemi SATO , Masatoshi IKEBE , Ryota NAKASHIMA , Yasutaka NOMURA , Hirotaka ORI
Abstract: There is provided a filter catalyst that has a wall-flow structure, and the filter catalyst has an excellent purification performance. The embodiment is a filter catalyst including a wall-flow type substrate that includes an inlet-side cell, an outlet-side cell, and a partition wall. The inlet-side cell has an open end portion on an exhaust gas flow-in side and a closed end portion on an exhaust gas flow-out side. The outlet-side cell is adjacent to the inlet-side cell and has an open end portion on the exhaust gas flow-out side and a closed end portion on the exhaust gas flow-in side. The partition wall has a porous structure and interposes between the inlet-side cell and the outlet-side cell. The filter catalyst includes an oxygen occlusion portion and a catalyst portion dispersed and disposed in the porous structure. The oxygen occlusion portion is disposed on a wall surface of the porous structure. The catalyst portion is disposed on the oxygen occlusion portion, and the catalyst portion has a surface exposed to a space where an exhaust gas flows including a communication hole.
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公开(公告)号：US10384163B2
公开(公告)日：2019-08-20
申请号：US15534794
申请日：2015-12-11
Applicant: Isao Chinzei , Hiromasa Suzuki , Takeru Yoshida , Masahide Miura , Yuki Aoki , Mitsuyoshi Okada , Toshitaka Tanabe , Akihiko Suda , Yoshinori Saito , Hirotaka Ori , Kosuke Iizuka , Akira Morikawa
Inventor： Isao Chinzei , Hiromasa Suzuki , Takeru Yoshida , Masahide Miura , Yuki Aoki , Mitsuyoshi Okada , Toshitaka Tanabe , Akihiko Suda , Yoshinori Saito , Hirotaka Ori , Kosuke Iizuka , Akira Morikawa
IPC: B01D53/94 , B01J37/02 , B01J37/03 , B01J35/00 , B01J23/00 , B01J23/10 , B01J23/63 , C01G25/02 , C01F17/00 , F01N3/10 , B01J35/10 , B01J37/00 , B01J35/02 , B01J37/08 , B01J27/053
Abstract: The object of the present invention is to provide an exhaust gas purifying catalyst that can achieve high purification performance while suppressing H2S emissions. The object is solved by an exhaust gas purifying catalyst in which the lower layer of the catalyst coating layer comprises a ceria-zirconia composite oxide having a pyrochlore-type ordered array structure, in which the ceria-zirconia composite oxide contains at least one additional element selected from the group consisting of praseodymium, lanthanum, and yttrium at 0.5 to 5.0 mol % in relation to the total cation amount, and the molar ratio of (cerium+additional element):(zirconium) is within the range from 43:57 to 48:52.
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公开(公告)号：US20180252132A1
公开(公告)日：2018-09-06
申请号：US15560625
申请日：2016-03-24
Applicant: Hiromasa SUZUKI , Masahide MIURA , Yoshinori SAITO , Satoru KATOH , Toshitaka TANABE , Tetsuhiro HIRAO , Tatsuya OHASHI , Hiroaki NAITO , Hirotaka ORI , Michihiko TAKEUCHI , Keiichi NARITA
Inventor： Hiromasa SUZUKI , Masahide MIURA , Yoshinori SAITO , Satoru KATOH , Toshitaka TANABE , Tetsuhiro HIRAO , Tatsuya OHASHI , Hiroaki NAITO , Hirotaka ORI , Michihiko TAKEUCHI , Keiichi NARITA
Abstract: An object of the present invention is to provide an exhaust gas purification catalyst which can exhibit high durability and warm-up performance. The present invention relates to an exhaust gas purification catalyst comprising a substrate and a catalyst coating layer formed on the substrate, wherein the catalyst coating layer comprises catalyst particles, the catalyst coating layer having an upstream region extending by 40 to 60% of the entire length of the substrate from an upstream end of the catalyst in the direction of an exhaust gas flow and a downstream region corresponding to the remainder portion of the catalyst coating layer, the composition of the catalyst particle of the upstream region being different from that of the downstream region. The upstream region in the direction of an exhaust gas flow has a structure where a void is included in a large number, and furthermore high-aspect-ratio pores having an aspect ratio of 5 or more account for a certain percentage or more of the whole volume of voids. Thus, the exhaust gas purification catalyst exhibits enhanced purification performance.
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Patent Agency Ranking
公开(公告)号：US07825063B2
公开(公告)日：2010-11-02
申请号：US11405956
申请日：2006-04-17
Applicant: Masashi Takeuchi , Hirotaka Ori
Inventor： Masashi Takeuchi , Hirotaka Ori
CPC classification number: B01D53/945 , B01D53/9495 , Y02T10/22
Abstract: An exhaust gas-purifying catalyst includes Nd and/or Pr as an active ingredient that suppresses generation of hydrogen sulfide.
Abstract translation: 废气净化催化剂包括Nd和/或Pr作为抑制硫化氢产生的活性成分。
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公开(公告)号：US20060247126A1
公开(公告)日：2006-11-02
申请号：US11405956
申请日：2006-04-17
Applicant: Michihiko Takeuchi , Hirotaka Ori
Inventor： Michihiko Takeuchi , Hirotaka Ori
IPC: B01J23/00
CPC classification number: B01D53/945 , B01D53/9495 , Y02T10/22
Abstract: An exhaust gas-purifying catalyst includes Nd and/or Pr as an active ingredient that suppresses generation of hydrogen sulfide.
Abstract translation: 废气净化催化剂包括Nd和/或Pr作为抑制硫化氢产生的活性成分。
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公开(公告)号：US20200368735A1
公开(公告)日：2020-11-26
申请号：US16864340
申请日：2020-05-01
Applicant: Koji SUGIURA , Hiromasa NISHIOKA , Naoto MIYOSHI , Akemi SATO , Masatoshi IKEBE , Ryota NAKASHIMA , Yasutaka NOMURA , Hirotaka ORI
Inventor： Koji SUGIURA , Hiromasa NISHIOKA , Naoto MIYOSHI , Akemi SATO , Masatoshi IKEBE , Ryota NAKASHIMA , Yasutaka NOMURA , Hirotaka ORI
Abstract: An exhaust gas purification device that allows suppressing an increase in pressure loss is provided. The exhaust gas purification device of the present disclosure includes a honeycomb substrate and an inflow cell side catalyst layer. The substrate includes a porous partition wall which defines inflow cells and outflow cells extending from an inflow side end to an outflow side end. The inflow cell side catalyst layer is disposed on a surface on the inflow cell side in an inflow cell side catalyst region from an inflow side end to a position close to an outflow side end of the partition wall. The permeability of a portion including an outflow side region from the position to the outflow side end of the partition wall is higher than a gas permeability of a portion including the inflow cell side catalyst region of the partition wall and the inflow cell side catalyst layer.
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公开(公告)号：US20180236401A1
公开(公告)日：2018-08-23
申请号：US15534794
申请日：2015-12-11
Applicant: Isao CHINZEI , Hiromasa SUZUKI , Takeru YOSHIDA , Masahide MIURA , Yuki AOKI , Mitsuyoshi OKADA , Toshitaka TANABE , Akihiko SUDA , Yoshinori SAITO , Hirotaka ORI , Kosuke IIZUKA , Akira MORIKAWA
Inventor： Isao CHINZEI , Hiromasa SUZUKI , Takeru YOSHIDA , Masahide MIURA , Yuki AOKI , Mitsuyoshi OKADA , Toshitaka TANABE , Akihiko SUDA , Yoshinori SAITO , Hirotaka ORI , Kosuke IIZUKA , Akira MORIKAWA
Abstract: The object of the present invention is to provide an exhaust gas purifying catalyst that can achieve high purification performance while suppressing H2S emissions. The object is solved by an exhaust gas purifying catalyst in which the lower layer of the catalyst coating layer comprises a ceria-zirconia composite oxide having a pyrochlore-type ordered array structure, in which the ceria-zirconia composite oxide contains at least one additional element selected from the group consisting of praseodymium, lanthanum, and yttrium at 0.5 to 5.0 mol % in relation to the total cation amount, and the molar ratio of (cerium+additional element):(zirconium) is within the range from 43:57 to 48:52.
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公开(公告)号：US20180071680A1
公开(公告)日：2018-03-15
申请号：US15561656
申请日：2016-03-24
Applicant: Hiromasa SUZUKI , Masahide MIURA , Yoshinori SAITO , Satoru KATOH , Toshitaka TANABE , Tetsuhiro HIRAO , Tatsuya OHASHI , Hiroaki NAITO , Hirotaka ORI , Michihiko TAKEUCHI , Keiichi NARITA
Inventor： Hiromasa SUZUKI , Masahide MIURA , Yoshinori SAITO , Satoru KATOH , Toshitaka TANABE , Tetsuhiro HIRAO , Tatsuya OHASHI , Hiroaki NAITO , Hirotaka ORI , Michihiko TAKEUCHI , Keiichi NARITA
CPC classification number: B01D53/945 , B01D53/94 , B01D53/9477 , B01D2255/1023 , B01D2255/1025 , B01D2255/407 , B01D2255/9022 , B01D2255/9205 , B01J23/63 , B01J35/023 , B01J35/026 , B01J35/10 , B01J35/1076 , B01J35/108 , B01J37/0018 , B01J37/0036 , B01J37/0219 , B01J37/0234 , B01J37/08 , F01N3/101 , F01N3/28 , F01N3/281 , F01N3/2828 , F01N13/009 , F01N2510/06 , Y02T10/22
Abstract: The present invention is directed to address the following problem: in an exhaust gas purification catalyst comprising a dual catalyst of a combination of a startup catalyst and an underfloor catalyst, reduction in the gas diffusivity of the startup catalyst results in reduction in the use efficiency of a catalytic active site, resulting in reduction in purification performance. The present invention relates to an exhaust gas purification catalyst comprising a dual catalyst of a combination of a startup catalyst having a catalyst coating where a large number of voids are included and an underfloor catalyst, wherein high-aspect-ratio pores having an aspect ratio of 5 or more account for a certain rate or more of the whole volume of the voids, to thereby enhance the purification performance of the catalyst.
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