公开(公告)号：US20190314804A1

公开(公告)日：2019-10-17

申请号：US16454709

申请日：2019-06-27

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xingcheng XIAO ,  Gongshin QI ,  Ryan J. DAY ,  Ming YANG

IPC: B01J37/03 ,  B01J35/00 ,  B01J23/44 ,  B01J37/08 ,  B01J37/18 ,  B01J23/42

Abstract: Catalyst systems that are resistant to high-temperature sintering and methods for preparing such catalyst systems that are resistant to sintering at high temperatures are provided. Methods of forming such catalyst systems include contacting a support having a surface including a catalyst particle with a solution comprising a metal salt and having an acidic pH. The metal salt is precipitated onto the surface of the support. Next, the metal salt is calcined to selectively generate a porous coating of metal oxide on the surface of the support distributed around the catalyst particle.