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1. (WO2017060692) PASSIVE NOx ADSORBER

Pub. No.:    WO/2017/060692    International Application No.:    PCT/GB2016/053089
Publication Date: Fri Apr 14 01:59:59 CEST 2017 International Filing Date: Thu Oct 06 01:59:59 CEST 2016
IPC: F01N 3/08
F01N 13/00
B01D 53/94
Applicants: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
Inventors: CHIFFEY, Andrew, Francis
CORPS, Jack
MITCHELL-DOWNIE, Laura
MOREAU, Francois
O'BRIEN, Matthew
Title: PASSIVE NOx ADSORBER
Abstract:
A ΝΟx absorber catalyst for treating an exhaust gas from a lean burn engine. The NOx absorber catalyst comprises a molecular sieve catalyst comprising a noble metal and a molecular sieve, wherein the molecular sieve contains the noble metal; an oxygen storage material for protecting the molecular sieve catalyst; and a substrate having an inlet end and an outlet end.