公开(公告)号：US20210205790A1

公开(公告)日：2021-07-08

申请号：US17107997

申请日：2020-12-01

申请人： Seiji NAKAHIGASHI ,  Isao CHINZEI ,  Shogo SHIRAKAWA ,  Hiromasa SUZUKI ,  Masahide MIURA ,  Takahiro NISHIO ,  Norimichi SHIMANO ,  Hiroki NIHASHI ,  Mitsuyoshi OKADA ,  Takashi ONOZUKA ,  Souta AKIYAMA ,  Hiromi TOGASHI ,  Takahiro NOGUCHI ,  Isao NAITO

发明人： Seiji NAKAHIGASHI ,  Isao CHINZEI ,  Shogo SHIRAKAWA ,  Hiromasa SUZUKI ,  Masahide MIURA ,  Takahiro NISHIO ,  Norimichi SHIMANO ,  Hiroki NIHASHI ,  Mitsuyoshi OKADA ,  Takashi ONOZUKA ,  Souta AKIYAMA ,  Hiromi TOGASHI ,  Takahiro NOGUCHI ,  Isao NAITO

IPC分类号： B01J23/46 ,  B01J23/42 ,  B01J35/02 ,  F01N3/10

摘要： The present disclosure provides an exhaust gas purification catalyst having an improved Rh activation, which comprises a substrate and a catalyst coat layer formed on the substrate, the catalyst coat layer having a two-layer structure, wherein the catalyst coat layer includes an upstream portion on an upstream side and a downstream portion on a downstream side in an exhaust gas flow direction, and a part or all of the upstream portion is formed on a part of the downstream portion, wherein the upstream portion contains Rh fine particles and Pt, wherein the Rh fine particles have an average particle size measured by a transmission electron microscope observation of 1.0 nm or more to 2.0 nm or less, and a standard deviation σ of the particle size of 0.8 nm or less, and wherein the downstream portion contains Rh.

公开(公告)号：US20210197176A1

公开(公告)日：2021-07-01

申请号：US17107224

申请日：2020-11-30

申请人： Isao CHINZEI ,  Seiji NAKAHIGASHI ,  Shogo SHIRAKAWA ,  Hiromasa SUZUKI ,  Masahide MIURA ,  Takahiro NISHIO ,  Norimichi SHIMANO ,  Hiroki NIHASHI ,  Hiromi TOGASHI ,  Mitsuyoshi OKADA ,  Takashi ONOZUKA ,  Souta AKIYAMA ,  Isao NAITO

发明人： Isao CHINZEI ,  Seiji NAKAHIGASHI ,  Shogo SHIRAKAWA ,  Hiromasa SUZUKI ,  Masahide MIURA ,  Takahiro NISHIO ,  Norimichi SHIMANO ,  Hiroki NIHASHI ,  Hiromi TOGASHI ,  Mitsuyoshi OKADA ,  Takashi ONOZUKA ,  Souta AKIYAMA ,  Isao NAITO

IPC分类号： B01J23/46 ,  B01J23/10 ,  B01J35/00 ,  B01D53/94

摘要： The present disclosure provides an exhaust gas purification catalyst having an improved low-temperature activity, which comprises a substrate and a catalyst coat layer formed on the substrate, wherein the catalyst coat layer contains Rh fine particles and a promoter comprising a Ce—Zr-based composite oxide and a Zr-based composite oxide not containing cerium oxide, wherein the Rh fine particles have an average particle size measured by a transmission electron microscope observation of 1.0 nm or more to 2.0 nm or less, and a standard deviation a of the particle size of 0.8 nm or less, and wherein the Rh fine particles are supported on each of the Ce—Zr-based composite oxide and the Zr-based composite oxide not containing cerium oxide.

公开(公告)号：US20210301706A1

公开(公告)日：2021-09-30

申请号：US17211112

申请日：2021-03-24

申请人： Isao CHINZEI ,  Takahiro NISHIO ,  Shogo SHIRAKAWA ,  Masahide MIURA ,  Hiromasa SUZUKI ,  Yuki KIDO ,  Minoru ITO ,  Sho HOSHINO ,  Shin NAKAYAMA

发明人： Isao CHINZEI ,  Takahiro NISHIO ,  Shogo SHIRAKAWA ,  Masahide MIURA ,  Hiromasa SUZUKI ,  Yuki KIDO ,  Minoru ITO ,  Sho HOSHINO ,  Shin NAKAYAMA

IPC分类号： F01N3/28 ,  B01J23/44 ,  B01J23/46 ,  B01J21/14 ,  B01J35/00 ,  B01J35/02

摘要： Provided is an exhaust gas purification catalyst capable of reducing a noble metal amount while maintaining a catalyst performance, which comprises a substrate and at least three catalyst coating layers formed on the substrate, the first and third catalyst coating layers contain Pd as a catalyst metal and are formed in a range of a predetermined length from an upstream end surface in an exhaust gas flow direction, and the second catalyst coating layer contains Rh as a catalyst metal and is formed in a range of a predetermined length from a downstream end surface in the exhaust gas flow direction.

公开(公告)号：US20180236401A1

公开(公告)日：2018-08-23

申请号：US15534794

申请日：2015-12-11

申请人： Isao CHINZEI ,  Hiromasa SUZUKI ,  Takeru YOSHIDA ,  Masahide MIURA ,  Yuki AOKI ,  Mitsuyoshi OKADA ,  Toshitaka TANABE ,  Akihiko SUDA ,  Yoshinori SAITO ,  Hirotaka ORI ,  Kosuke IIZUKA ,  Akira MORIKAWA

发明人： 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分类号： B01D53/94 ,  B01J37/00 ,  B01J35/10 ,  C01F17/00 ,  F01N3/10

摘要： 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.

公开(公告)号：US20220118428A1

公开(公告)日：2022-04-21

申请号：US17495881

申请日：2021-10-07

申请人： Isao Chinzei ,  Seiji NAKAHIGASHI ,  Takumi TOJO ,  Masahide MIURA ,  Noboyuki TAKAGI ,  Yoshiteru YAZAWA ,  Sho HOSHINO ,  Minoru ITO ,  Naoto FUJITA ,  Tomomasa AIKAWA

发明人： Isao CHINZEI ,  Seiji NAKAHIGASHI ,  Takumi TOJO ,  Masahide MIURA ,  Noboyuki TAKAGI ,  Yoshiteru YAZAWA ,  Sho HOSHINO ,  Minoru ITO ,  Naoto FUJITA ,  Tomomasa AIKAWA

IPC分类号： B01J23/58 ,  B01J35/04 ,  B01D53/94

摘要： Provided is an exhaust gas purification device that allows improving an exhaust gas purification performance. An exhaust gas purification device of the present disclosure includes a substrate and a catalyst layer disposed on the substrate. The catalyst layer contains a porous carrier, a catalytic metal that is supported by the porous carrier and belongs to platinum group, an alkaline earth metal supported by the porous carrier, and an alkaline earth metal not supported by the porous carrier. At least a part of the alkaline earth metal supported by the porous carrier is supported inside the porous carrier.

公开(公告)号：US20180065111A1

公开(公告)日：2018-03-08

申请号：US15663952

申请日：2017-07-31

申请人： Yoshinori SAITO ,  Masahide MIURA ,  Seiji NAKAHIGASHI ,  Hiromasa SUZUKI ,  Takahiro SUZUKI ,  Kosuke IIZUKA ,  Minoru ITO ,  Ryota NAKASHIMA

发明人： Yoshinori SAITO ,  Masahide MIURA ,  Seiji NAKAHIGASHI ,  Hiromasa SUZUKI ,  Takahiro SUZUKI ,  Kosuke IIZUKA ,  Minoru ITO ,  Ryota NAKASHIMA

IPC分类号： B01J23/10 ,  B01J35/02 ,  B01J20/02 ,  B01J20/28 ,  B01J23/63 ,  B01J37/02 ,  B01J20/32 ,  B01J35/00 ,  B01D53/94

CPC分类号： B01J23/10 ,  B01D53/9445 ,  B01D53/945 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2061 ,  B01D2255/2063 ,  B01D2255/2066 ,  B01D2255/2092 ,  B01D2255/407 ,  B01D2255/9022 ,  B01D2255/908 ,  B01D2255/9202 ,  B01J20/0211 ,  B01J20/0225 ,  B01J20/28004 ,  B01J20/3236 ,  B01J23/63 ,  B01J35/0006 ,  B01J35/002 ,  B01J35/023 ,  B01J37/0244 ,  C01G25/00

摘要： An catalyst for purifying exhaust gas comprising an OCS material that has sufficient heat resistance and achieves a favorable balance between the oxygen storage volume and the oxygen absorption/release rate includes an catalyst for purifying exhaust, which has a substrate and a catalyst coating layer formed on the substrate, wherein the catalyst coating layer comprises a ceria-zirconia-based composite oxide having a pyrochlore structure in an amount of 5 to 100 g/L based on the volume of the substrate, the ceria-zirconia-based composite oxide has a secondary particle size (D50) of 3 μm to 7 μm, and the ceria-zirconia-based composite oxide optionally contains praseodymium.

公开(公告)号：US20220106900A1

公开(公告)日：2022-04-07

申请号：US17487236

申请日：2021-09-28

申请人： Isao CHINZEI ,  Takumi TOJO ,  Masahide MIURA ,  Nobusuke KABASHIMA ,  Minoru ITO ,  Naoto FUJITA

发明人： Isao CHINZEI ,  Takumi TOJO ,  Masahide MIURA ,  Nobusuke KABASHIMA ,  Minoru ITO ,  Naoto FUJITA

IPC分类号： F01N13/00 ,  F01N3/28

摘要： An exhaust gas purification device includes a substrate including an upstream end and a downstream end, the substrate having a length Ls between the upstream end and the downstream end; a first catalyst layer containing first catalyst particles, extending across a first region, and being in contact with the substrate, the first region extending between the upstream end and a first position, the first position being at a first distance La from the upstream end toward the downstream end; and a second catalyst layer containing second catalyst particles, extending across a second region, and being in contact with the substrate, the second region extending between the downstream end and a second position, the second position being at a second distance Lb from the downstream end toward the upstream end. The first catalyst layer has an inner surface defining macropores.

公开(公告)号：US20180252132A1

公开(公告)日：2018-09-06

申请号：US15560625

申请日：2016-03-24

申请人： Hiromasa SUZUKI ,  Masahide MIURA ,  Yoshinori SAITO ,  Satoru KATOH ,  Toshitaka TANABE ,  Tetsuhiro HIRAO ,  Tatsuya OHASHI ,  Hiroaki NAITO ,  Hirotaka ORI ,  Michihiko TAKEUCHI ,  Keiichi NARITA

发明人： Hiromasa SUZUKI ,  Masahide MIURA ,  Yoshinori SAITO ,  Satoru KATOH ,  Toshitaka TANABE ,  Tetsuhiro HIRAO ,  Tatsuya OHASHI ,  Hiroaki NAITO ,  Hirotaka ORI ,  Michihiko TAKEUCHI ,  Keiichi NARITA

IPC分类号： F01N3/10 ,  F01N3/28 ,  B01D53/94 ,  B01J37/02 ,  B01J35/02 ,  B01J35/10

摘要： 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.

公开(公告)号：US20180071680A1

公开(公告)日：2018-03-15

申请号：US15561656

申请日：2016-03-24

申请人： Hiromasa SUZUKI ,  Masahide MIURA ,  Yoshinori SAITO ,  Satoru KATOH ,  Toshitaka TANABE ,  Tetsuhiro HIRAO ,  Tatsuya OHASHI ,  Hiroaki NAITO ,  Hirotaka ORI ,  Michihiko TAKEUCHI ,  Keiichi NARITA

发明人： Hiromasa SUZUKI ,  Masahide MIURA ,  Yoshinori SAITO ,  Satoru KATOH ,  Toshitaka TANABE ,  Tetsuhiro HIRAO ,  Tatsuya OHASHI ,  Hiroaki NAITO ,  Hirotaka ORI ,  Michihiko TAKEUCHI ,  Keiichi NARITA

IPC分类号： B01D53/94 ,  B01J23/63 ,  F01N3/10 ,  B01J35/10

CPC分类号： 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

摘要： 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.

公开(公告)号：US20180106174A1

公开(公告)日：2018-04-19

申请号：US15560703

申请日：2016-03-24

申请人： Hiromasa SUZUKI ,  Masahide MIURA ,  Yoshinori SAITO ,  Satoru KATOH ,  Toshitaka TANABE ,  Tetsuhiro HIRAO ,  Tatsuya OHASHI ,  Hiroaki NAITO ,  Hirotaka ORI ,  Michihiko TAKEUCHI ,  Keiichi NARITA

发明人： Hiromasa SUZUKI ,  Masahide MIURA ,  Yoshinori SAITO ,  Satoru KATOH ,  Toshitaka TANABE ,  Tetsuhiro HIRAO ,  Tatsuya OHASHI ,  Hiroaki NAITO ,  Hirotaka ORI ,  Michihiko TAKEUCHI ,  Keiichi NARITA

IPC分类号： F01N3/10 ,  B01D53/86 ,  B01J23/56 ,  B01J37/04

CPC分类号： F01N3/101 ,  B01D53/865 ,  B01D53/94 ,  B01D53/945 ,  B01D53/9477 ,  B01D2255/1021 ,  B01D2255/1025 ,  B01D2255/407 ,  B01D2255/9022 ,  B01D2255/9205 ,  B01J23/56 ,  B01J23/63 ,  B01J35/023 ,  B01J35/026 ,  B01J35/10 ,  B01J35/1076 ,  B01J35/108 ,  B01J37/0018 ,  B01J37/0036 ,  B01J37/0219 ,  B01J37/0234 ,  B01J37/04 ,  B01J37/08 ,  F01N3/2825 ,  F01N2330/06 ,  F01N2330/34 ,  Y02T10/22

摘要： 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 underfloor 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 and an underfloor catalyst having a catalyst coating where a large number of voids are included, 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.