公开(公告)号：US20190232258A1

公开(公告)日：2019-08-01

申请号：US16318531

申请日：2017-07-20

Applicant: UMICORE SHOKUBAI JAPAN CO., LTD.

Inventor： Hirotaka KUNO ,  Masashi NAKASHIMA ,  Yuzo HAMADA ,  Masanori IKEDA

IPC: B01J27/045 ,  B01D53/94 ,  B01J33/00 ,  B01J23/63 ,  B01J37/02 ,  B01J37/08 ,  B01J35/04 ,  F01N3/10

CPC classification number: B01J27/045 ,  B01D53/94 ,  B01D53/9468 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/9022 ,  B01J23/63 ,  B01J27/053 ,  B01J33/00 ,  B01J35/04 ,  B01J37/02 ,  B01J37/0228 ,  B01J37/0236 ,  B01J37/08 ,  F01N3/10 ,  F01N3/281 ,  F01N3/2828 ,  F01N2330/02 ,  F01N2330/06 ,  F01N2370/02 ,  F01N2510/0682 ,  F01N2510/0684 ,  F01N2570/08

Abstract: A catalyst for purification of exhaust gas containing a phosphorus compound includes: a lower catalyst layer containing at least one of noble metal provided on a refractory three-dimensional structure; and an upper catalyst layer at an inflow side of exhaust gas and an upper catalyst layer at an outflow side of exhaust gas provided on a surface of the lower catalyst layer. The upper catalyst layer at the inflow side and the upper catalyst layer at the outflow side have different concentrations of noble metal. The catalyst has an intermediate zone with a length of 3 to 23% of the overall length of the refractory three-dimensional structure provided between the upper catalyst layer at the inflow side and the upper catalyst layer at the outflow side. The intermediate zone starts from a position 10 to 38% from an end face of the catalyst at the inflow side of exhaust gas.

公开(公告)号：US20220062869A1

公开(公告)日：2022-03-03

申请号：US17417671

申请日：2019-11-11

Applicant: UMICORE SHOKUBAI JAPAN CO., LTD.

Inventor： Hirotaka KUNO ,  Masashi NAKASHIMA ,  Yuji OGINO

IPC: B01J23/63 ,  B01J21/04 ,  B01J21/16 ,  B01J37/08 ,  B01J37/03 ,  B01J35/00 ,  B01J35/02 ,  F01N3/28 ,  B01D53/94

Abstract: An exhaust gas purification catalyst including at least two layers, a lower catalyst layer and upper catalyst layer, on a refractory three-dimensional structure, wherein the lower catalyst layer and upper catalyst layer independently include a precious metal, alumina, and cerium-zirconium composite oxide, and at least a portion of the upper catalyst layer is formed using a manufacturing method including: applying a slurry for forming the upper catalyst layer onto the lower catalyst layer, the slurry containing a pore connecting agent with a combustion decomposition temperature of 150° C. or more to 400° C. or less, a precious metal precursor, alumina, and cerium-zirconium composite oxide, the content ratio of the pore connecting agent being less than 20 mass % of the total solid content when heated to 1000° C.; and holding the workpiece in an oxygen containing gas at a temperature above −150° C. and +50° C. or lower, relative to the combustion decomposition temperature.

公开(公告)号：US20200047121A1

公开(公告)日：2020-02-13

申请号：US16342565

申请日：2017-10-18

Applicant: Umicore Shokubai Japan Co., Ltd.

Inventor： Kenji Ashikari ,  Masanori IKEDA ,  Shigekazu MINAMI ,  Masashi NAKASHIMA ,  Hideki GOTO

IPC: B01D53/94 ,  B01J23/63 ,  F01N3/10

Abstract: The present invention provides an exhaust gas purifying catalyst which can maintain high catalyst activity even after the exhaust gas purifying catalyst is exposed to an exhaust gas at a high temperature for a long period of time. The exhaust gas purifying catalyst contains a Pd—Pr complex and PdO, and the Pd—Pr complex is represented by PraPdbOc, where a=1 to 3, b=1 to 10, and c=1 to 6.

公开(公告)号：US20200049042A1

公开(公告)日：2020-02-13

申请号：US16607398

申请日：2018-04-26

Applicant: UMICORE SHOKUBAI JAPAN CO., LTD.

Inventor： Hirotaka KUNO ,  Masashi NAKASHIMA ,  Takahiro IKEGAMI ,  Kosuke MIKITA ,  Masanori IKEDA ,  Shigekazu MINAMI

IPC: F01N3/022 ,  B01J23/44

Abstract: In order to provide an exhaust gas purification catalyst capable of purifying hydrocarbons, carbon monoxide, and nitrogen oxides in exhaust gas at low temperatures, the exhaust gas purification catalyst according to the present invention includes: a region (2) containing palladium and yttrium on a three-dimensional structure (1), and a first region (3) and a second region (4) provided on the region (2) in order from an inflow side of exhaust gas to an outflow side of exhaust gas. The concentration of yttrium contained in the first region (3) and/or the second region (4) is higher than the concentration of yttrium contained in the region (2).

公开(公告)号：US20200049041A1

公开(公告)日：2020-02-13

申请号：US16607392

申请日：2018-04-26

Applicant: UMICORE SHOKUBAI JAPAN CO., LTD.

Inventor： Hirotaka KUNO ,  Masashi NAKASHIMA ,  Kenji ASHIKARI ,  Yuji OGINO ,  Kazuyoshi KOMATA ,  Shigekazu MINAMI

IPC: F01N3/022 ,  B01J23/44

Abstract: In order to provide an exhaust gas purification catalyst capable of purifying hydrocarbons, carbon monoxide, and nitrogen oxides in exhaust gas at low temperatures, the exhaust gas purification catalyst according to the present invention includes: a region (2) containing palladium on a three-dimensional structure (1), and a first region (3) and a second region (4) provided on the region (2) in order from an inflow side of exhaust gas to an outflow side of exhaust gas. The concentration of neodymium contained in the first region (3) is higher than the concentration of neodymium contained in the second region (4).

公开(公告)号：US20190291083A1

公开(公告)日：2019-09-26

申请号：US16318424

申请日：2017-07-20

Applicant: Umicore Shokubai Japan Co., Ltd.

Inventor： Kazuyoshi KOMATA ,  Hirotaka KUNO ,  Yuzo HAMADA ,  Masashi NAKASHIMA ,  Yuji OGINO ,  Masanori IKEDA

IPC: B01J23/63 ,  B01J37/02 ,  B01J37/03 ,  B01J37/10 ,  B01J21/04 ,  B01J23/44 ,  B01J23/46 ,  B01J35/00 ,  B01D53/94 ,  F01N3/10

Abstract: The present invention provides exhaust gas purification catalyst for an internal combustion engine, and exhaust gas purification method using the catalyst. The present invention provides the exhaust gas purification catalyst including a support, a first catalyst layer on an upstream side, a second catalyst layer on a downstream side, and a third catalyst layer. In the exhaust gas purification catalyst, the upstream portion of the third catalyst layer is present on the first catalyst layer, the downstream portion of the third catalyst layer is present on the second catalyst layer, and in the middle portion between the upstream portion and the downstream portion of the third catalyst layer is present between the first catalyst layer and the second catalyst layer.