公开(公告)号：US20230338940A1

公开(公告)日：2023-10-26

申请号：US18044259

申请日：2021-09-07

Applicant: BASF Corporaion

Inventor： Shiang Sung ,  Chunxin Ji ,  Pavel Ruvinskiy

IPC: B01J23/44 ,  B01J23/10 ,  B01J35/00 ,  B01J37/02 ,  B01J37/08 ,  F01N3/10 ,  F01N3/20 ,  F02M25/10 ,  B01J23/46 ,  B01J35/04 ,  F01N3/28 ,  B01D53/94 ,  B01J21/04 ,  B01J21/06

CPC classification number: B01J35/0006 ,  B01D53/945 ,  B01D53/9495 ,  B01J21/04 ,  B01J21/066 ,  B01J23/10 ,  B01J23/44 ,  B01J23/464 ,  B01J35/04 ,  B01J37/0219 ,  B01J37/0228 ,  B01J37/0244 ,  B01J37/0248 ,  B01J37/088 ,  F01N3/101 ,  F01N3/2073 ,  F01N3/208 ,  F01N3/2803 ,  F02M25/10 ,  B01D2251/202 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2042 ,  B01D2255/2063 ,  B01D2255/2065 ,  B01D2255/20715 ,  B01D2255/407 ,  B01D2255/9022 ,  B01D2255/9032 ,  B01D2255/9035 ,  B01D2255/908 ,  B01D2255/9155 ,  B01D2257/404 ,  B01D2257/502 ,  B01D2257/702 ,  B01D2258/012 ,  F01N2370/02 ,  F01N2510/0684 ,  F01N2610/04 ,  F01N2610/1406 ,  F01N2900/1402 ,  F01N2900/1404

Abstract: The disclosure provides a platinum-containing three-way conversion (TWC) catalyst, and a system for treating an exhaust gas stream from a gasoline engine using the TWC catalyst. The system is configured to introduce controlled quantities of hydrogen gas into the exhaust gas stream upstream of the platinum-containing TWC catalyst article during a cold-start period. Further provided are related methods of treating such exhaust streams. Such systems and methods are useful in reducing a level of one or more of hydrocarbons, carbon monoxide, and nitrogen oxide in a gaseous exhaust stream from a gasoline engine.