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1. (WO2017153893) CORE/SHELL HYDROCARBON TRAP CATALYST AND METHOD OF MANUFACTURE

Pub. No.:    WO/2017/153893    International Application No.:    PCT/IB2017/051298
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Tue Mar 07 00:59:59 CET 2017
IPC: B01J 35/00
B01J 23/40
F01N 3/20
B01J 21/04
B01J 21/06
B01J 23/10
B01J 29/06
B01J 37/00
Applicants: BASF CORPORATION
Inventors: DEEBA, Michel
Title: CORE/SHELL HYDROCARBON TRAP CATALYST AND METHOD OF MANUFACTURE
Abstract:
The invention provides an automotive catalyst composite that includes a catalytic material on a carrier, the catalytic material including a plurality of core-shell support particles including a core and a shell surrounding the core, wherein the core includes a plurality of particles having a primary particle size distribution d90 of up to about 5 µm, wherein the core particles include particles of one or more molecular sieves and optionally particles of one or more refractory metal oxides; and wherein the shell comprises nanoparticles of one or more refractory metal oxides, wherein the nanoparticles have a primary particle size distribution d90 in the range of about 5 nm to about 1000 nm (1 µm); and optionally, one or more platinum group metals (PGMs) on the core-shell support. The invention also provides an exhaust gas treatment system and related method of treating exhaust gas utilizing the catalyst composite.