公开(公告)号：US20170274358A1

公开(公告)日：2017-09-28

申请号：US15447294

申请日：2017-03-02

申请人： Philip Gerald BLAKEMAN ,  Gavin Michael BROWN ,  Sougato CHATTERJEE ,  Andrew Francis CHIFFEY ,  Jane GAST ,  Paul Richard PHILLIPS ,  Raj Rao RAJARAM ,  Glen SPREITZER ,  Andrew Peter WALKER

发明人： Philip Gerald BLAKEMAN ,  Gavin Michael BROWN ,  Sougato CHATTERJEE ,  Andrew Francis CHIFFEY ,  Jane GAST ,  Paul Richard PHILLIPS ,  Raj Rao RAJARAM ,  Glen SPREITZER ,  Andrew Peter WALKER

IPC分类号： B01J23/44 ,  B01D53/94 ,  B01J21/04 ,  B01J23/40 ,  B01J23/42 ,  B01J23/63 ,  B01J29/76 ,  B01J33/00 ,  B01J35/00 ,  B01J35/04 ,  B01J37/02 ,  B01J37/03 ,  F01N3/035 ,  F01N3/20

CPC分类号： B01J23/44 ,  B01D53/9418 ,  B01D53/944 ,  B01D53/9472 ,  B01D53/9477 ,  B01D53/9481 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/104 ,  B01D2255/106 ,  B01D2255/2065 ,  B01D2255/20707 ,  B01D2255/20715 ,  B01D2255/2092 ,  B01D2255/30 ,  B01D2255/407 ,  B01D2255/9022 ,  B01D2255/904 ,  B01D2255/9155 ,  B01D2258/012 ,  B01J21/04 ,  B01J23/40 ,  B01J23/42 ,  B01J23/63 ,  B01J29/7615 ,  B01J29/763 ,  B01J33/00 ,  B01J35/0006 ,  B01J35/04 ,  B01J37/0244 ,  B01J37/0246 ,  B01J37/038 ,  B01J2229/186 ,  B01J2229/42 ,  F01N3/035 ,  F01N3/2066 ,  F01N3/208 ,  F01N2510/0682 ,  Y02A50/2325 ,  Y02T10/24

摘要： A catalysed substrate monolith 12 for use in treating exhaust gas emitted from a lean-burn internal combustion engine, which catalysed substrate monolith 12 comprising a first washcoat coating 16 and a second washcoat coating 18, wherein the first washcoat coating comprises a catalyst composition comprising at least one platinum group metal (PGM) and at least one support material for the at least one PGM, wherein at least one PGM in the first washcoat coating is liable to volatilise when the first washcoat coating is exposed to relatively extreme conditions including relatively high temperatures, wherein the second washcoat coating comprises at least one metal oxide for trapping volatilised PGM and wherein the second washcoat coating is oriented to contact exhaust gas that has contacted the first washcoat coating.