公开(公告)号：US20240149251A1

公开(公告)日：2024-05-09

申请号：US18281586

申请日：2022-02-18

申请人： MITSUI MINING & SMELTING CO., LTD.

发明人： Toshiki ASAKOSHI ,  Akihiro ISAYAMA ,  Hironori IWAKURA

IPC分类号： B01J23/63 ,  B01D53/94 ,  B01J23/00 ,  B01J35/00 ,  B01J35/57 ,  B01J35/61 ,  B01J37/02 ,  F01N3/10

CPC分类号： B01J23/63 ,  B01D53/9409 ,  B01D53/9468 ,  B01J23/005 ,  B01J35/19 ,  B01J35/613 ,  B01J37/0228 ,  F01N3/101 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2042 ,  B01D2255/2047 ,  B01D2255/2092 ,  B01D2255/405 ,  B01D2255/407 ,  B01D2255/9022 ,  B01D2255/9155 ,  B01D2255/9207 ,  B01D2257/404 ,  B01D2257/55 ,  B01D2258/01 ,  B01J35/57

摘要： An object of the present invention is to provide an exhaust gas purification catalyst composition and an exhaust gas purification catalyst, each of which utilizes a phosphorus capturing material that enables solving a problem of MAO, and in order to achieve the object, a complex oxide containing Mg, Ba, and Al, wherein the complex oxide has a spinel-type crystal structure, and wherein a molar ratio of a Mg content to an Al content in the complex oxide is 0.010 or more and 0.25 or less is used as a phosphorus capturing material.

公开(公告)号：US20230001391A1

公开(公告)日：2023-01-05

申请号：US17780622

申请日：2020-11-27

申请人： MITSUI MINING & SMELTING CO., LTD.

发明人： Takashi BABA ,  Akihiro ISAYAMA

IPC分类号： B01J27/18 ,  B01J27/185 ,  B01D53/94 ,  F01N3/10

摘要： An object of the present invention is to provide an exhaust gas purification catalyst having improved exhaust gas purifying performance (in particular, improved NOx purifying performance) at low to medium temperature, and, in order to achieve the object, the present invention provides an exhaust gas purification catalyst (10A) including: a substrate (20); and a catalyst layer (30 or 40) formed on the substrate (20), wherein the catalyst layer (30 or 40) contains rhodium element, phosphorus element and a rare earth element other than cerium element, wherein a ratio of a mass of the phosphorus element contained in the catalyst layer (30 or 40) to the mass of the rhodium element contained in the catalyst layer (30 or 40) is from 1 to 10, and wherein a ratio of a mass of the rare earth element other than cerium element in terms of an oxide thereof contained in the catalyst layer (30 or 40) to the mass of the rhodium element contained in the catalyst layer (30 or 40) is from 1 to 5.