公开(公告)号：US20190388838A1

公开(公告)日：2019-12-26

申请号：US16481574

申请日：2018-01-26

Applicant: BASF Corporation

Inventor： Tian Luo ,  Michel Deeba ,  Yunlong Gu ,  Stephan Deuerlein ,  Emi Leung

IPC: B01D53/94 ,  B01J23/63 ,  B01J35/04 ,  B01J35/00 ,  B01J21/04 ,  B01J37/02 ,  B01J37/16 ,  B01J37/08 ,  F01N3/10 ,  F01N3/28

Abstract: The present invention relates to catalyst compositions effective for carrying out three-way conversion including platinum group metal nanoparticles (e.g., nanoparticles of Pt, Pd, Au, Ru, Rh, alloys thereof, and mixtures thereof), the nanoparticles having an average particle size of 15 to 50 nm, wherein the nanoparticles are dispersed on a refractory metal oxide component. In some such catalyst compositions, a significant portion, e.g., at least 90% of the nanoparticles have a particle size within this range. Methods of preparing, and using such catalyst compositions as well as catalyst articles and emission treatment systems comprising such catalyst compositions are also provided herein.