公开(公告)号：US20220016601A1

公开(公告)日：2022-01-20

申请号：US17295683

申请日：2019-11-14

Applicant: CATALER CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shunsuke OHISHI ,  Takaya OTA ,  Ryosuke TAKASU ,  Mitsuyoshi OKADA ,  Minoru ITOU ,  Kana IWATA ,  Takumi TOJO ,  Takeru YOSHIDA ,  Masaru KAKINOHANA ,  Hiromasa SUZUKI

IPC: B01J23/46 ,  B01D53/94 ,  B01J23/10 ,  B01J35/04 ,  B01J37/02 ,  B01J37/04 ,  B01J37/08

Abstract: An exhaust-gas purification apparatus includes: a honeycomb base material including a plurality of exhaust-gas flow paths partitioned by a porous wall; and one or more catalyst noble metals carried by the honeycomb base material. The catalyst noble metals are selected from the group consisting of platinum, palladium, and rhodium. The honeycomb base material has a noble metal concentrated surface section in which a 50%-by-mass noble metal carry depth for a specific noble metal that is one type among one or two catalyst noble metals is less than 50% of the distance from the surface to the center of the inside of the porous wall. The 50%-by-mass noble metal carry depth is the depth at which, when the amount of the specific noble metal carried between the surface and the center of the inside of porous wall is used as a reference, 50% by mass of specific noble metal is carried.

公开(公告)号：US20230076536A1

公开(公告)日：2023-03-09

申请号：US17801349

申请日：2021-02-10

Applicant: CATALER CORPORATION

Inventor： Tsubasa NANJO ,  Yuya KAWANO ,  Takuto ARAKAWA ,  Yoshinori YAMASHITA ,  Shunsuke OHISHI ,  Ryosuke TAKASU

IPC: B01J23/42 ,  B01J29/04 ,  B01D53/94 ,  B01J23/44 ,  B01J35/00

Abstract: An exhaust gas purification catalyst device including a substrate and an SCR catalyst layer on the substrate, the substrate containing catalyst precious metal particles directly supported on the substrate, the catalyst precious metal particles containing Pt, and the catalyst precious metal particles having an average particle diameter of 30 to 120 nm inclusive.

公开(公告)号：US20230294044A1

公开(公告)日：2023-09-21

申请号：US18014273

申请日：2021-07-06

Applicant: CATALER CORPORATION

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

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

CPC classification number: B01J37/0244 ,  B01J20/165 ,  B01J23/464 ,  B01J35/04 ,  B01J37/0225 ,  B01J37/0228 ,  B01J37/0246

Abstract: 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.