ZONED DIESEL OXIDATION CATALYST

• Main Authors: HANLEY ROBERT, SHIBATA MASAHITO, LOPEZ-DE JESUS YARITZA, MARKATOU PENELOPE, COLE KIERAN, NEWMAN COLIN, KLINK WASSIM, HASHIMOTO YOSHIHITO
• Format: Patent
• Language: Chinese; English
• Published: 27.07.2016
• Subjects: PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

An oxidation catalyst is described for treating an exhaust gas from a diesel engine, which oxidation catalyst comprises: a substrate; a first washcoat region (1) disposed on the substrate, wherein the first washcoat region (1) comprises a first platinum group metal (PGM) and a first support material; a second washcoat region (2) adjacent to the first washcoat region (1), wherein the second washcoat region (2) comprises a second platinum group metal (PGM) and a second support material; a third washcoat region (3) disposed on the substrate, wherein the third washcoat region (3) comprises a third platinum group metal (PGM) and a third support material; and wherein either: (i) the third washcoat region (3) is adjacent to the second washcoat region (2); or (ii) the second washcoat region (2) is disposed or supported on the third washcoat region (3). Also described are uses and methods involving the oxidation catalyst. 本发明描述了用于处理来自柴油发动机的排气的氧化催化剂，所述氧化催化剂包含：基材；设置在所述基材上的第载体涂覆区域(1)，其中所述第载体涂覆区域(1)包含第铂族金属(PGM)和第载体材料；邻近所述