公开(公告)号：US20210379576A1

公开(公告)日：2021-12-09

申请号：US17303290

申请日：2021-05-26

申请人： Johnson Matthey Public Limited Company ,  Johnson Matthey Catalysts (Germany) GmbH

发明人： Nikki Jane AMOS-REICHERT ,  Daniel AVIS ,  Juergen BAUER ,  Yannick BIDAL ,  Guy Richard CHANDLER ,  Alexander Nicolas Michael GREEN ,  Neil GREENHAM ,  Matthew Eben HARRIS ,  Sofia LOPEZ-OROZCO ,  Joerg MUENCH ,  Paul Richard Phillips ,  Irene PIRAS

IPC分类号： B01J37/00 ,  B01J29/76 ,  B01J37/08

摘要： The present disclosure relates to a method for forming a catalyst article comprising: (a) forming a slurry having a solids content of up to 50 wt % by mixing together at least the following components a crystalline molecular sieve in an H+ or NH4+ form, an insoluble active metal precursor and an aqueous solvent at a temperature in the range 10 to 35° C.; (b) coating a substrate with the slurry formed in step (a); and (c) calcining the coated substrate formed in step (b) to form a catalyst layer on the substrate. The present disclosure further relates to a catalyst article, particularly a catalyst article which is suitable for use in the selective catalytic reduction of nitrogen oxides, and to an exhaust system.

公开(公告)号：US20210339234A1

公开(公告)日：2021-11-04

申请号：US17302346

申请日：2021-04-30

申请人： Johnson Matthey Public Limited Company ,  Johnson Matthey Catalysts (Germany) GMBH

发明人： Nikki Jane AMOS-REICHERT ,  Daniel AVIS ,  Juergen BAUER ,  Yannick BIDAL ,  Guy Richard CHANDLER ,  Alexander Nicholas Michael GREEN ,  Neil GREENHAM ,  Matthew Eben HARRIS ,  Sofia LOPEZ-OROZCO ,  Joerg Werner MUENCH ,  Paul Richard PHILLIPS ,  Irene PIRAS

IPC分类号： B01J29/76 ,  B01J37/00 ,  B01J37/04 ,  B01J37/08 ,  B01J35/04 ,  F01N3/20 ,  F01N3/28

摘要： The present disclosure relates to a method for forming a catalyst article comprising: (a) forming a plastic mixture having a solids content of greater than 50% by weight by mixing together a crystalline small pore or medium pore molecular sieve in an H+ or NH4+ form, an insoluble active metal precursor, an inorganic matrix component, an organic auxiliary agent, an aqueous solvent and optionally inorganic fibres; (b) moulding the plastic mixture into a shaped article; and (c) calcining the shaped article to form a solid catalyst body. The present disclosure further relates to a catalyst article, particularly a catalyst article which is suitable for use in the selective catalytic reduction of nitrogen oxides, and to an exhaust system.