公开(公告)号：US20230114106A1

公开(公告)日：2023-04-13

申请号：US17912140

申请日：2021-03-17

申请人： CATALER CORPORATION

发明人： Kohei TAKASAKI ,  Tatsuya OHASHI ,  Shunsuke OISHI

IPC分类号： B01J29/74 ,  B01J23/44 ,  B01J21/04 ,  B01J35/10 ,  B01J35/02 ,  B01D53/94

摘要： An exhaust gas purification catalyst device comprising a base material and a catalyst coating layer provided on the base material, wherein the catalyst coating layer contains zeolite particles, inorganic oxide particles other than the zeolite particles, and a catalyst precious metal, and the ratio dZEO/dOX between the average particle diameter dZEO of the zeolite particles and the average particle diameter dOX of the inorganic oxide particles other than the zeolite particles is 3.4 or less.

公开(公告)号：US20200376467A1

公开(公告)日：2020-12-03

申请号：US16970519

申请日：2019-01-29

申请人： CATALER CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

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

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

摘要： 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：US20230302406A1

公开(公告)日：2023-09-28

申请号：US18023542

申请日：2021-08-23

申请人： CATALER CORPORATION

发明人： Shunsuke OISHI ,  Naruya INADA ,  Ryoichi OGAWA

IPC分类号： B01D53/94 ,  B01J23/44 ,  B01J23/46 ,  B01J23/42 ,  B01J29/70 ,  B01J23/00 ,  B01J20/16

CPC分类号： B01D53/9454 ,  B01D53/9468 ,  B01J23/44 ,  B01J23/464 ,  B01J23/42 ,  B01J29/70 ,  B01J23/005 ,  B01D53/9486 ,  B01J20/165 ,  B01D2257/40 ,  B01D2257/702 ,  B01D2257/502 ,  B01D2258/01 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/50 ,  B01D2255/908

摘要： An gas purification catalyst device having a catalyst coated layer formed on at least one base material, wherein: the catalyst coated layer includes a first catalyst coated layer on the upstream side of an exhaust gas flow, and a second catalyst coated layer on the downstream side of the exhaust gas flow; the first catalyst coated layer includes a hydrocarbon adsorbent and a catalytic precious metal; and the second catalyst coated layer includes a nitrogen oxide adsorbent and a catalytic precious metal.

公开(公告)号：US20220339606A1

公开(公告)日：2022-10-27

申请号：US17861320

申请日：2022-07-11

申请人： CATALER CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

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

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

摘要： 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：US20230294044A1

公开(公告)日：2023-09-21

申请号：US18014273

申请日：2021-07-06

申请人： CATALER CORPORATION

发明人： Kohei TAKASAKI ,  Tatsuya OHASHI ,  Shunsuke OISHI ,  Ryota ONOE ,  Junichi HORI ,  Ryosuke TAKASU ,  Chihiro KASUYA

IPC分类号： B01J37/02 ,  B01J35/04 ,  B01J20/16 ,  B01J23/46

CPC分类号： B01J37/0244 ,  B01J20/165 ,  B01J23/464 ,  B01J35/04 ,  B01J37/0225 ,  B01J37/0228 ,  B01J37/0246

摘要： Provided is an exhaust gas purification catalyst system comprising, in the following order, from the upstream side of an exhaust gas flow: a first exhaust gas purification catalyst apparatus 100 including a metal honeycomb substrate 110 and a first catalyst coat layer 120 on the metal honeycomb substrate 110; a heater 300; and a second exhaust purification catalyst apparatus 200 including a cordierite honeycomb substrate 210 and a second catalyst coat layer 220 on the cordierite honeycomb substrate 210, wherein the first catalyst coat layer 120 contains an adsorbent 130 that can adsorb one or two or more among NOx, HC and CO, and the second catalyst coat layer 220 contains inorganic oxide particles 230 and catalyst precious metal particles 240 supported on the inorganic oxide particles 230.

公开(公告)号：US20210094027A1

公开(公告)日：2021-04-01

申请号：US16970667

申请日：2019-01-25

申请人： CATALER CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

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

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

摘要： 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.