公开(公告)号：US20220339606A1

公开(公告)日：2022-10-27

申请号：US17861320

申请日：2022-07-11

Applicant: CATALER CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shunsuke OISHI ,  Takaya OTA ,  Yoshinori SAITO ,  Seiji NAKAHIGASHI ,  Isao CHINZEI ,  Hiromasa SUZUKI

IPC: B01J23/63 ,  B01D53/94 ,  B01J35/00 ,  B01J37/02 ,  F01N3/28

Abstract: Methods for exhaust gas purification, including the steps of: attaching an exhaust gas purification catalyst to an exhaust system of an internal combustion engine, and supplying an exhaust gas to the exhaust gas purification catalyst, where the exhaust gas purification catalyst includes an upper layer containing first carrier particles which are particles of an inorganic oxide and rhodium, and a lower layer containing second carrier particles which are particles of an inorganic oxide, the upper layer includes a rhodium-rich portion near the surface of the upper layer on the upstream side of the exhaust gas flow, and the existence range of the rhodium-rich portion is in a range of greater than 50% to 80% of the length of the upper layer from a downstream side end of an exhaust gas flow and of less than 20 μm in the depth direction from an outermost surface of the upper layer.

公开(公告)号：US20180264409A1

公开(公告)日：2018-09-20

申请号：US15534805

申请日：2015-12-11

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  CATALER CORPORATION

Inventor： Hiromasa SUZUKI ,  Takeru YOSHIDA ,  Masahide MIURA ,  Isao CHINZEI ,  Mitsuyoshi OKADA ,  Toshitaka TANABE ,  Akihiko SUDA ,  Hirotaka ORI ,  Akiya CHIBA ,  Kosuke IIZUKA ,  Akira MORIKAWA

IPC: B01D53/94 ,  B01J37/02 ,  B01J37/03 ,  C04B35/488

CPC classification number: B01D53/945 ,  B01D2255/1021 ,  B01D2255/1025 ,  B01D2255/2061 ,  B01D2255/2063 ,  B01D2255/2066 ,  B01D2255/40 ,  B01D2255/407 ,  B01D2255/9032 ,  B01D2255/908 ,  B01D2255/9207 ,  B01D2258/012 ,  B01J23/002 ,  B01J23/63 ,  B01J35/0006 ,  B01J35/002 ,  B01J35/023 ,  B01J37/0201 ,  B01J37/0244 ,  B01J37/0248 ,  B01J37/03 ,  B01J37/038 ,  C01F17/0043 ,  C01G25/02 ,  C01P2002/50 ,  C01P2002/54 ,  C04B35/488 ,  C04B35/6261 ,  C04B2235/3224 ,  C04B2235/3229 ,  C04B2235/3244 ,  C04B2235/443 ,  C04B2235/5436 ,  C04B2235/604 ,  C04B2235/664 ,  C04B2235/76 ,  Y02T10/22

Abstract: The object of the present invention is to provide a high-performance exhaust gas purifying catalyst that can achieve oxygen absorption/release capacity and NOx purification performance. The object is solved by an exhaust gas purifying catalyst, which comprises a ceria-zirconia composite oxide having a pyrochlore-type ordered array structure in the upstream part of the catalyst coating layer, 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 % of the total cation amount, and has a molar ratio of (cerium+the additional element):(zirconium) of 43:57 to 48:52.

公开(公告)号：US20210094027A1

公开(公告)日：2021-04-01

申请号：US16970667

申请日：2019-01-25

Applicant: CATALER CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shunsuke OISHI ,  Takaya OTA ,  Isao CHINZEI ,  Hiromasa SUZUKI ,  Yoshinori SAITO ,  Seiji NAKAHIGASHI

IPC: B01J37/02 ,  B01J23/46 ,  B01J23/10 ,  B01J35/00 ,  F01N3/08

Abstract: The exhaust gas purification catalyst device includes an upper layer which includes first carrier particles and rhodium, and a lower layer which includes second carrier particles, and the upper layer includes a rhodium enriched area in the range a, from the upstream end in the exhaust gas flow to 50% of the upper layer length, and a range b from the upper layer top surface to 18 μm in the depth direction. The rhodium enriched area contains at least 50% and less than 100% of all the rhodium in the upper layer.

公开(公告)号：US20210197175A1

公开(公告)日：2021-07-01

申请号：US17088767

申请日：2020-11-04

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  CATALER CORPORATION

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

IPC: B01J23/46 ,  B01J23/42 ,  B01J23/44

Abstract: The present disclosure relates to an exhaust gas control catalyst including a base and a catalyst coating layer having a two-layer structure on the base. The catalyst coating layer includes a lower layer on the base, and an upper layer on the lower layer. The upper layer of the catalyst coating layer contains Rh particles in which a mean particle diameter measured by observation using a transmission electron microscope is 1.0 nm or more and 2.0 nm or less and a particle-diameter standard deviation σ is 0.8 nm or less. A length of the upper layer from an end face on a downstream side in an exhaust gas flow direction falls within a range of 70% or more and 100% or less of a total length of the base.

公开(公告)号：US20180023444A1

公开(公告)日：2018-01-25

申请号：US15547589

申请日：2016-01-25

Applicant: CATALER CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yoshinori SAITO ,  Hirotaka ORI ,  Shingo SAKAGAMI ,  Isao CHINZEI ,  Takeru YOSHIDA ,  Yuki AOKI

IPC: F01N3/28 ,  F01N3/10 ,  B01J23/40

CPC classification number: F01N3/2803 ,  B01D53/86 ,  B01D53/945 ,  B01D2255/1023 ,  B01D2255/65 ,  B01D2255/9022 ,  B01D2255/9032 ,  B01D2255/908 ,  B01J23/40 ,  B01J23/44 ,  B01J23/63 ,  B01J35/0006 ,  B01J35/0073 ,  B01J37/0244 ,  F01N3/101 ,  F01N2330/60 ,  F01N2370/02 ,  F01N2510/0682 ,  F01N2510/0684 ,  Y02T10/22

Abstract: The exhaust gas cleaning catalyst according is provided with a substrate and a catalyst coat layer formed on a surface of the substrate. The catalyst coat layer is formed as a laminate structure having an upper layer and a lower layer. The upper layer is a Pd-free layer that does not contain Pd, and the lower layer is a Pd-containing layer. In addition, when a region of the lower layer that corresponds to 20% of the length of the exhaust gas cleaning catalyst from the exhaust gas inlet side end towards the exhaust gas outlet side of the exhaust gas cleaning catalyst is divided into four equal regions to be each 5% of the length, the relationship A>B>C is satisfied, where A, B, and C represents the Pd content in the first, second, and third region respectively.

公开(公告)号：US20160288096A1

公开(公告)日：2016-10-06

申请号：US15035413

申请日：2014-11-10

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  CATALER CORPORATION

Inventor： Takahiko FUJIWARA ,  Yuki AOKI ,  Hiromasa SUZUKI ,  Isao CHINZEI ,  Yuji YABUZAKI

IPC: B01J23/44 ,  B01J35/00 ,  B01D53/94 ,  B01J23/10

CPC classification number: B01J23/44 ,  B01D53/945 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/40 ,  B01D2255/407 ,  B01D2255/9022 ,  B01D2255/9032 ,  B01D2255/908 ,  B01J23/002 ,  B01J23/10 ,  B01J23/63 ,  B01J35/0006 ,  B01J35/002 ,  B01J37/0244 ,  B01J37/0248 ,  Y02T10/22

Abstract: Provided is an exhaust gas control catalyst in which a catalyst layer containing at least one of Pd and Pt is formed on a substrate (1), the exhaust gas control catalyst including a first OSC material having a pyrochlore structure and an OSC material whose oxygen storage rate is faster than that of the first OSC material having a pyrochlore structure in a catalyst layer front stage (21) which is in a range from an exhaust gas upstream end of the catalyst layer to a length position which is 50% or lower of a total length of the catalyst layer.

Abstract translation: 本发明提供一种废气控制催化剂，其中在基板（1）上形成有包含Pd和Pt中的至少一种的催化剂层，所述排气控制催化剂包括具有烧绿石结构的第一OSC材料和其储氧 速率比在催化剂层前段（21）中具有烧绿石结构的第一OSC材料的速率快，其范围从催化剂层的废气上游端到50％以下的长度位置 催化剂层的总长度。

公开(公告)号：US20200376467A1

公开(公告)日：2020-12-03

申请号：US16970519

申请日：2019-01-29

Applicant: CATALER CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shunsuke OISHI ,  Takaya OTA ,  Yoshinori SAITO ,  Seiji NAKAHIGASHI ,  Isao CHINZEI ,  Hiromasa SUZUKI

IPC: B01J23/63 ,  B01J35/00 ,  B01J37/02 ,  B01D53/94 ,  F01N3/28

Abstract: This exhaust gas purification catalyst device includes an upper layer which includes first carrier particles and rhodium, and a lower layer which includes second carrier particles, and the upper layer includes a rhodium enriched area in the range a, from the downstream end in the exhaust gas flow to greater than 50% and up to 80% of the upper layer length, and a range b from the upper layer top surface less than 20 μm in the depth direction. The rhodium enriched area contains at least 50% and less than 100% of all the rhodium in the upper layer.

公开(公告)号：US20180250657A1

公开(公告)日：2018-09-06

申请号：US15974060

申请日：2018-05-08

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  CATALER CORPORATION

Inventor： Akira MORIKAWA ,  Kae KONISHI ,  Toshitaka TANABE ,  Akihiko SUDA ,  Masahide MIURA ,  Isao CHINZEI ,  Hiromasa SUZUKI ,  Akiya CHIBA ,  Kosuke IIZUKA

IPC: B01J23/10 ,  C04B35/50 ,  C01G25/00 ,  C04B35/626 ,  B01J23/00 ,  B01J23/63 ,  B01J35/00 ,  B01J35/02 ,  B01J37/00 ,  B01D53/94 ,  B01J37/03 ,  C04B35/488 ,  B01J37/12 ,  B01J37/14 ,  B01J37/16 ,  B01J37/08

CPC classification number: B01J23/10 ,  B01D53/94 ,  B01D2255/407 ,  B01D2255/908 ,  B01D2255/9202 ,  B01J23/002 ,  B01J23/63 ,  B01J35/002 ,  B01J35/023 ,  B01J37/0009 ,  B01J37/0036 ,  B01J37/0063 ,  B01J37/03 ,  B01J37/08 ,  B01J37/12 ,  B01J37/14 ,  B01J37/16 ,  C01G25/00 ,  C01P2002/36 ,  C01P2002/50 ,  C01P2002/72 ,  C01P2006/12 ,  C04B35/488 ,  C04B35/50 ,  C04B35/6261 ,  C04B35/6265 ,  C04B2235/3229 ,  C04B2235/3244 ,  C04B2235/443 ,  C04B2235/5436 ,  C04B2235/5463 ,  C04B2235/604 ,  C04B2235/661 ,  C04B2235/664 ,  C04B2235/76 ,  C04B2235/80

Abstract: A ceria-zirconia-based composite oxide containing a composite oxide of ceria and zirconia is provided, in which primary particles having a particle diameter of 1.5 to 4.5 μm account for, on a particle number basis, at least 50% of all primary particles in the ceria-zirconia-based composite oxide, and the molar ratio of cerium to zirconium in the ceria-zirconia-based composite oxide is between 43:57 and 55:45.

公开(公告)号：US20160250620A1

公开(公告)日：2016-09-01

申请号：US15026760

申请日：2014-10-02

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  CATALER CORPORATION

Inventor： Akira MORIKAWA ,  Kae KONISHI ,  Toshitaka TANABE ,  Akihiko SUDA ,  Masahide MIURA ,  Isao CHINZEI ,  Hiromasa SUZUKI ,  Akiya CHIBA ,  Kosuke IIZUKA

IPC: B01J23/10 ,  B01J35/02 ,  B01J37/02 ,  B01J23/00 ,  B01J37/08

CPC classification number: B01J23/10 ,  B01D53/9445 ,  B01D2255/2063 ,  B01D2255/407 ,  B01D2255/908 ,  B01J23/002 ,  B01J23/63 ,  B01J23/66 ,  B01J35/002 ,  B01J35/023 ,  B01J37/0036 ,  B01J37/0063 ,  B01J37/02 ,  B01J37/0201 ,  B01J37/03 ,  B01J37/04 ,  B01J37/08 ,  B01J2523/00 ,  C01F17/0018 ,  C01G25/00 ,  C01P2002/36 ,  C01P2002/50 ,  C01P2002/74 ,  C01P2002/85 ,  C01P2004/04 ,  C01P2004/61 ,  C01P2004/64 ,  C01P2006/12 ,  C01P2006/37 ,  C04B35/488 ,  C04B35/6261 ,  C04B35/6265 ,  C04B35/62655 ,  C04B35/62685 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3227 ,  C04B2235/3229 ,  C04B2235/3244 ,  C04B2235/443 ,  C04B2235/5436 ,  C04B2235/549 ,  C04B2235/604 ,  C04B2235/652 ,  C04B2235/656 ,  C04B2235/6567 ,  C04B2235/75 ,  C04B2235/76 ,  C04B2235/762 ,  Y02T10/22 ,  B01J2523/3706 ,  B01J2523/3712 ,  B01J2523/48 ,  B01J2523/36 ,  B01J2523/3718 ,  B01J2523/842 ,  B01J2523/31 ,  B01J2523/824

Abstract: A ceria-zirconia composite oxide includes at least one of lanthanum, yttrium, and praseodymium. A rate of a total content of the at least one rare earth element to a total content of cerium and zirconium is 0.1 at % to 4.0 at %. A content of the rare earth element present in near-surface regions, which are at a distance of less than 50 nm from surfaces of primary particles of the ceria-zirconia composite oxide, accounts for 90 at % or more of the total content of the rare earth element. An average particle size of the primary particles of the ceria-zirconia composite oxide is 2.2 μm to 4.5 μm. After a predetermined durability test, the intensity ratio I(14/29) of a diffraction line at 2θ=14.5° to a diffraction line at 2θ=29° and the intensity ratio I(28/29) of a diffraction line at 2θ=28.5° to the diffraction line at 2θ=29° respectively satisfy the following conditions: I(14/29)≧0.02, and I(28/29)≦0.08.

Abstract translation: 二氧化铈 - 氧化锆复合氧化物包括镧，钇和镨中的至少一种。 至少一种稀土元素的总含量与铈和锆的总含量的比率为0.1原子％至4.0原子％。 存在于距二氧化铈 - 氧化锆复合氧化物的一次粒子的表面小于50nm的近表面区域中的稀土元素的含量为90质量％以上 稀土元素 二氧化铈 - 氧化锆复合氧化物的一次粒子的平均粒径为2.2μm〜4.5μm。 在预定的耐久性试验之后，在2θ= 14.5°处的衍射线与2θ= 29°的衍射线的强度比I（14/29）和在2θ= 2°时的衍射线的强度比I（28/29） 在2θ= 29°时的衍射线分别满足28.5°的条件：I（14/29）≥0.02，I（28/29）≤0.08。

公开(公告)号：US20160184801A1

公开(公告)日：2016-06-30

申请号：US14910378

申请日：2014-08-05

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  CATALER CORPORATION

Inventor： Akira MORIKAWA ,  Kae KONISHI ,  Toshitaka TANABE ,  Akihiko SUDA ,  Masahide MIURA ,  Isao CHINZEI ,  Hiromasa SUZUKI ,  Akiya CHIBA ,  Kosuke IIZUKA

IPC: B01J23/10 ,  B01J37/12 ,  B01J37/16 ,  B01J35/02 ,  B01J37/00

CPC classification number: B01J23/10 ,  B01D53/94 ,  B01D2255/407 ,  B01D2255/908 ,  B01D2255/9202 ,  B01J23/002 ,  B01J23/63 ,  B01J35/002 ,  B01J35/023 ,  B01J37/0009 ,  B01J37/0036 ,  B01J37/0063 ,  B01J37/03 ,  B01J37/08 ,  B01J37/12 ,  B01J37/14 ,  B01J37/16 ,  C01G25/00 ,  C01P2002/36 ,  C01P2002/50 ,  C01P2002/72 ,  C01P2006/12 ,  C04B35/488 ,  C04B35/50 ,  C04B35/6261 ,  C04B35/6265 ,  C04B2235/3229 ,  C04B2235/3244 ,  C04B2235/443 ,  C04B2235/5436 ,  C04B2235/5463 ,  C04B2235/604 ,  C04B2235/661 ,  C04B2235/664 ,  C04B2235/76 ,  C04B2235/80

Abstract: A ceria-zirconia-based composite oxide containing a composite oxide of ceria and zirconia is provided, in which primary particles having a particle diameter of 1.5 to 4.5 μm account for, on a particle number basis, at least 50% of all primary particles in the ceria-zirconia-based composite oxide, and the molar ratio of cerium to zirconium in the ceria-zirconia-based composite oxide is between 43:57 and 55:45.

Abstract translation: 提供了含有二氧化铈和氧化锆复合氧化物的二氧化铈 - 氧化锆系复合氧化物，其中粒径为1.5〜4.5μm的一次粒子以粒子数计算为所有初级粒子的至少50％ 二氧化铈 - 氧化锆系复合氧化物，二氧化铈 - 氧化锆类复合氧化物中的铈与锆的摩尔比为43:57〜55:45。