公开(公告)号：US20190240643A1

公开(公告)日：2019-08-08

申请号：US16320572

申请日：2017-06-15

Applicant: BASF Corporation

Inventor： Andrey Karpov ,  Benjamin Foulon ,  Chunxin JI ,  Knut Wassermann ,  Michel Deeba ,  Yipeng Sun

IPC: B01J23/44 ,  B01J23/46 ,  B01J35/02 ,  B01J37/02 ,  B01J37/16 ,  B01J35/00 ,  B01J35/04 ,  F01N3/10 ,  F01N3/20

CPC classification number: B01J23/44 ,  B01D53/945 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2065 ,  B01D2255/20715 ,  B01D2255/9022 ,  B01J21/04 ,  B01J21/066 ,  B01J23/464 ,  B01J23/63 ,  B01J35/0013 ,  B01J35/023 ,  B01J35/04 ,  B01J37/0036 ,  B01J37/0045 ,  B01J37/0211 ,  B01J37/0244 ,  B01J37/0248 ,  B01J37/16 ,  B01J2523/31 ,  B01J2523/3712 ,  B01J2523/48 ,  B01J2523/822 ,  B01J2523/824 ,  F01N3/101 ,  F01N3/20 ,  F01N2330/30 ,  F01N2510/0684

Abstract: The present disclosure provides a three-way conversion (TWC) catalyst composition, and a catalyst article comprising such a catalyst composition suitable for at least partial conversion of gaseous hydrocarbons (HCs), carbon monoxide (CO), and nitrogen oxides (NOx). Generally, the catalyst article includes a catalyst substrate having a plurality of channels adapted for gas flow, each channel having a wall surface and a catalytic coating on the surfaces or inside the pores of the wall. The catalytic coating generally includes a first washcoat with a platinum group metal (PGM) component and a first refractory metal oxide support and a second washcoat having a plurality of palladium-rhodium nanoparticles and a second refractory metal oxide support.