公开(公告)号：US20190201885A1

公开(公告)日：2019-07-04

申请号：US16298253

申请日：2019-03-11

Applicant: Johnson Matthey Public Limited Company

Inventor： Juergen BAUER ,  Ralf DOTZEL ,  Joerg Werner MUENCH

IPC: B01J37/00 ,  B01J21/16 ,  B01J35/04 ,  F01N3/20 ,  F01N3/28 ,  B01J29/40 ,  B01J29/70 ,  B01J35/02 ,  B01J37/04 ,  B01D53/94 ,  B01J29/064 ,  B01J29/076 ,  B01J29/16 ,  B01J29/48 ,  B01J29/58 ,  B01J29/78

CPC classification number: B01J37/0009 ,  B01D53/9418 ,  B01D53/9486 ,  B01D2255/2065 ,  B01D2255/20707 ,  B01D2255/20723 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/20776 ,  B01D2255/50 ,  B01J21/16 ,  B01J29/064 ,  B01J29/076 ,  B01J29/16 ,  B01J29/40 ,  B01J29/48 ,  B01J29/58 ,  B01J29/7007 ,  B01J29/7015 ,  B01J29/78 ,  B01J29/7815 ,  B01J29/783 ,  B01J35/023 ,  B01J35/04 ,  B01J37/04 ,  B01J2229/186 ,  B01J2229/42 ,  B01J2229/62 ,  B01J2229/64 ,  F01N3/2066 ,  F01N3/28 ,  F01N3/2828

Abstract: To be able to produce an SCR catalyst (2), in particular one having a zeolite fraction (Z) as catalytically active fraction, in a reliable process and at the same time achieve good catalytic activity of the catalyst (2), an inorganic binder fraction (B) which is catalytically inactive in the starting state and has been treated to develop catalytic activity is mixed into a catalyst composition (4). The inorganic binder component for the binder fraction (B) is, in the starting state, preferably porous particles (10), in particular diatomaceous earth, which display mesoporosity. To effect catalytic activation, the individual particles (10) are either coated with a catalytically active layer (12) or transformed into a catalytically active zeolite (14) with maintenance of the mesoporosity.

公开(公告)号：US20200018210A1

公开(公告)日：2020-01-16

申请号：US16449598

申请日：2019-06-24

Applicant: Johnson Matthey Public Limited Company

Inventor： Juergen BAUER ,  Sofia LOPEZ-OROZCO ,  Joerg Werner MUENCH

IPC: F01N3/20 ,  B01J29/04 ,  B01J29/74 ,  B01J29/72 ,  B01J29/70 ,  B01J35/10 ,  B01J37/02 ,  B01J37/30 ,  B01D53/94 ,  B01J35/04 ,  B01J29/76 ,  B01J37/00 ,  F01N3/28

Abstract: A method of reducing nitrogen oxides in exhaust gas of an internal combustion engine by selective catalytic reduction (SCR) comprises contacting the exhaust gas also containing ammonia and oxygen with a catalytic converter comprising a catalyst (2) comprising at least one crystalline small-pore molecular sieve catalytically active component (ZM,I) having a maximum ring opening of eight tetrahedral basic building blocks, which crystalline small-pore molecular sieve catalytically active component (ZM,I) comprising mesopores.

公开(公告)号：US20170145887A1

公开(公告)日：2017-05-25

申请号：US15129625

申请日：2015-03-27

Applicant: Johnson Matthey Public Limited Company

Inventor： Juergen BAUER ,  Sofia LOPEZ-OROZCO ,  Joerg Werner MUENCH

IPC: F01N3/20 ,  F01N3/28 ,  B01J35/04 ,  B01J37/00 ,  B01D53/94 ,  B01J29/76

CPC classification number: F01N3/2066 ,  B01D53/9418 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/50 ,  B01D2255/9155 ,  B01D2258/012 ,  B01J29/56 ,  B01J29/76 ,  B01J29/763 ,  B01J29/83 ,  B01J29/85 ,  B01J35/04 ,  B01J35/1052 ,  B01J35/108 ,  B01J37/0009 ,  B01J37/0246 ,  B01J2229/14 ,  B01J2229/18 ,  B01J2229/186 ,  B01J2229/38 ,  B01J2229/42 ,  B01J2229/62 ,  B01J2229/64 ,  F01N3/2842 ,  Y02T10/24

Abstract: A method of reducing nitrogen oxides in exhaust gas of an internal combustion engine by selective catalytic reduction (SCR) comprises contacting the exhaust gas also containing ammonia and oxygen with a catalytic converter comprising a catalyst (2) comprising at least one crystalline small-pore molecular sieve catalytically active component (ZM,I) having a maximum ring opening of eight tetrahedral basic building blocks, which crystalline small-pore molecular sieve catalytically active component (ZM,I) comprising mesopores.

公开(公告)号：US20230323802A1

公开(公告)日：2023-10-12

申请号：US18132591

申请日：2023-04-10

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

Inventor： Christopher DALY ,  Rainer LEPPELT ,  Joerg Werner MUENCH ,  Andrew David NEWMAN ,  Irene PIRAS ,  Agnes RAJ ,  Dominic Florian SANTI ,  Nicholas SPENCER ,  Andrew STONOR

IPC: F01N3/28 ,  B01J23/22 ,  B01J23/30 ,  B01J23/38 ,  B01J29/76 ,  B01J21/06 ,  B01J21/08 ,  B01J23/10 ,  B01J35/04 ,  B01J35/00 ,  F01N3/20 ,  F01N3/10 ,  B01D53/94

CPC classification number: F01N3/2825 ,  B01J23/22 ,  B01J23/30 ,  B01J23/38 ,  B01J29/763 ,  B01J21/063 ,  B01J21/08 ,  B01J23/10 ,  B01J35/04 ,  B01J35/0006 ,  F01N3/2066 ,  F01N3/106 ,  B01D53/9418 ,  B01D53/944 ,  B01D53/9472 ,  B01D53/9477 ,  B01D53/9436 ,  F01N2610/1453 ,  F01N2370/04 ,  F01N2330/48 ,  B01D2258/012 ,  B01D2255/20723 ,  B01D2255/2065 ,  B01D2255/2098 ,  B01D2255/9155 ,  B01D2255/9032 ,  B01D2255/9035 ,  B01D2255/50 ,  B01D2251/2062

Abstract: An exhaust gas treatment system includes in order: an intake for receiving an exhaust gas from a lean burn combustion engine; an injector for the provision of a nitrogenous reductant; a close-coupled vanadium-containing SCR catalyst composition; one or more downstream PGM-containing oxidation catalyst compositions, wherein the close-coupled vanadium-containing SCR catalyst composition includes cerium in a Ce:V molar ratio of greater than 0.3.

公开(公告)号：US20210339234A1

公开(公告)日：2021-11-04

申请号：US17302346

申请日：2021-04-30

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

Inventor： 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: B01J29/76 ,  B01J37/00 ,  B01J37/04 ,  B01J37/08 ,  B01J35/04 ,  F01N3/20 ,  F01N3/28

Abstract: 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.

公开(公告)号：US20170144143A1

公开(公告)日：2017-05-25

申请号：US15129645

申请日：2015-03-27

Applicant: Johnson Matthey Public Limited Company

Inventor： Juergen BAUER ,  Ralf DOTZEL ,  Joerg Werner MUENCH

IPC: B01J37/00 ,  B01J29/70 ,  B01J21/16 ,  F01N3/28 ,  B01J37/04 ,  B01J35/02 ,  B01D53/94 ,  F01N3/20 ,  B01J29/40 ,  B01J35/04

CPC classification number: B01J37/0009 ,  B01D53/9418 ,  B01D53/9486 ,  B01D2255/2065 ,  B01D2255/20707 ,  B01D2255/20723 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/20776 ,  B01D2255/50 ,  B01J21/16 ,  B01J29/064 ,  B01J29/076 ,  B01J29/16 ,  B01J29/40 ,  B01J29/48 ,  B01J29/58 ,  B01J29/7007 ,  B01J29/7015 ,  B01J29/78 ,  B01J29/7815 ,  B01J29/783 ,  B01J35/023 ,  B01J35/04 ,  B01J37/04 ,  B01J2229/186 ,  B01J2229/42 ,  B01J2229/62 ,  B01J2229/64 ,  F01N3/2066 ,  F01N3/28 ,  F01N3/2828

Abstract: To be able to produce an SCR catalyst (2), in particular one having a zeolite fraction (Z) as catalytically active fraction, in a reliable process and at the same time achieve good catalytic activity of the catalyst (2), an inorganic binder fraction (B) which is catalytically inactive in the starting state and has been treated to develop catalytic activity is mixed into a catalyst composition (4). The inorganic binder component for the binder fraction (B) is, in the starting state, preferably porous particles (10), in particular diatomaceous earth, which display mesoporosity. To effect catalytic activation, the individual particles (10) are either coated with a catalytically active layer (12) or transformed into a catalytically active zeolite (14) with maintenance of the mesoporosity.