公开(公告)号：JP2002030967A

公开(公告)日：2002-01-31

申请号：JP2001151625

申请日：2001-05-21

Applicant: DMC2 DEGUSSA METALS CATALYSTS CERDEC AG

Inventor： MUSSMANN LOTHAR ,  LINDNER DIETER DR ,  EMIL VOTSMEIER ,  RICHTER JOERG MICHAEL ,  LOX EGBERT DR

IPC: F01N3/20 ,  B01D53/94 ,  F01N3/24 ,  F01N11/00 ,  F02D41/14 ,  F02D41/22

Abstract: PROBLEM TO BE SOLVED: To enable regulation of operation employing a second λ-sensor when in case of rich exhaust gas, the sensor voltage of the second λ-sensor does not exceed a set voltage by a value widely exceeding a predetermined voltage difference, a method for operating an exhaust emission control device for a gasoline engine. SOLUTION: Operation is effected mainly in a stoichiometric air-fuel ratio and operation is performed in a rich air-fuel ratio during acceleration or a full load operation. In this case, the exhaust gas purifying device is provided with a three-dimensional catalyst and the first λ-sensor followed by the catalyst and the second λ-sensor proceeded by the catalyst. The air-fuel ratio is regulated by using a signal from the first λ-sensor and a signal from the second λ-sensor is used in monitoring (trim control) of the first λ-sensor and diagnosis of operation of the catalyst.

公开(公告)号：JP2000246105A

公开(公告)日：2000-09-12

申请号：JP2000051700

申请日：2000-02-28

Applicant: DEGUSSA

Inventor： DOMESLE RAINER DR ,  GOEBEL ULRICH ,  MUSSMANN LOTHAR ,  LOX EGBERT ,  KREUZER THOMAS DR

IPC: B01D53/94 ,  B01J23/00 ,  B01J23/54 ,  B01J23/58 ,  B01J23/63 ,  B01J35/04 ,  B01J35/10 ,  B01J37/02 ,  B01J37/025

Abstract: PROBLEM TO BE SOLVED: To obtain an aluminum oxide-base catalyst material having a high surface area and high dispersion of a catalytically active component, containing at least one basic oxide besides aluminum oxide and containing at least one noble metal belonging to the platinum group of the Periodic Table as the catalytically active component. SOLUTION: A support material stabilized with a basic oxide is loaded with another basic oxide by new impregnation with the oxide, the impregnated material is dried and calcined at

公开(公告)号：CA2426315A1

公开(公告)日：2002-05-02

申请号：CA2426315

申请日：2001-09-08

Applicant: DEGUSSA

Inventor： STOCHNIOL GUIDO ,  TACKE THOMAS ,  REISINGER MARTIN ,  HAUSMANN RALF ,  CHEN BAOSHU ,  PANSTER PETER ,  KREUZER THOMAS ,  MUSSMANN LOTHAR ,  LINDNER DIETER ,  HARRIS MICHAEL ,  LOX EGBERT

IPC: B01D53/86 ,  B01D53/94 ,  B01J23/40 ,  B01J23/63 ,  B01J27/053 ,  B01J37/02 ,  B01J37/14

Abstract: The invention relates to a high performance catalyst containing a layer on a n inert carrier body comprising noble metals from the platinum group deposited on support materials. The catalyst is characterised in that, the layer comprises platinum deposited in a washcoat consisting of Al203 which is stabilized with lanthana (La2O3), ceria (CeO2), which is stabilized with zirconia (ZrO2) and praseodymium (Pr6O11). The supprot is promoted by sulfur - containing compounds which come from at least one of following compounds: platinum sulfite (PtSO3), sulfuric acid (H2SO4), ammonium sulfate ((NH4)2SO4 ), titanium oxysulfate (TiOSO4), titanium sulfate (Ti2(SO4)3), and zirconium sulfate (Zr(SO4)2).

公开(公告)号：CA2299602A1

公开(公告)日：2000-08-26

申请号：CA2299602

申请日：2000-02-25

Applicant: DEGUSSA

Inventor： MUSSMANN LOTHAR ,  LOX EGBERT ,  KREUZER THOMAS ,  DOMESLE RAINER ,  GOBEL ULRICH

IPC: B01D53/94 ,  B01J23/00 ,  B01J23/54 ,  B01J23/58 ,  B01J23/63 ,  B01J35/04 ,  B01J35/10 ,  B01J37/02 ,  B01J37/025 ,  B01J23/40

Abstract: The present invention provides a powdered catalyst material based on aluminium oxide, which contains at least one basic metal oxide and at least one noble metal from the platinum group of the Periodic System of Elements in addition to aluminium oxide. The catalyst material is obtainable by loading a support material already stabilised by basic oxides by renewed impregnation with further basic oxides. After drying and calcining this post-impregnated material at temperatures below 800.degree.C, the catalytically active noble metals are also incorporated into the support material by impregnation.

公开(公告)号：CA2234355A1

公开(公告)日：1998-10-09

申请号：CA2234355

申请日：1998-04-08

Applicant: DEGUSSA

Inventor： LINDNER DIETER ,  MUSSMANN LOTHAR ,  VAN YPEREN RENEE ,  KREUZER THOMAS ,  LOX EGBERT

IPC: B01D53/94 ,  B01J20/06 ,  B01J23/02 ,  B01J23/44 ,  B01J23/58 ,  B01J23/63 ,  B01J23/78 ,  B01J23/89 ,  B01J37/18 ,  F01N3/00 ,  B01J21/04

Abstract: The invention relates to a single-layered three-way catalytic converter containing only palladium, with high activity and heat resistance. The catalyst contains, in addition to finely divided, stabilised aluminium oxide, at least one finely divided cerium/zirconium mixed oxide and optionally finely divided nickel oxide, as well as highly dispersed amounts of cerium oxide, zirconium oxide and barium oxide. The palladium is distributed largely uniformly throughout the entire catalyst.

公开(公告)号：ZA9710113B

公开(公告)日：1998-06-08

申请号：ZA9710113

申请日：1997-11-10

Applicant: DEGUSSA

Inventor： MUSSMANN LOTHAR ,  LINDNER DIETER ,  YPEREN RENEE VAN ,  LOX EGBERT ,  KREUZER THOMAS

IPC: B01D53/94 ,  B01J23/63 ,  B01J29/068 ,  B01J29/08 ,  B01J29/40 ,  B01J29/80 ,  B01J37/02 ,  F01N3/28 ,  B01D ,  B01J ,  F01N

公开(公告)号：CA2342029C

公开(公告)日：2008-08-19

申请号：CA2342029

申请日：2001-03-26

Applicant: DMC2 DEGUSSA METALS CATALYSTS

Inventor： KREUZER THOMAS ,  LOX EGBERT ,  VOTSMEIER MARTIN ,  LINDNER DIETER ,  MUSSMANN LOTHAR

IPC: B01J23/63 ,  F01N3/10 ,  B01D53/86 ,  B01D53/94 ,  B01J23/42 ,  B01J23/46 ,  B01J37/02 ,  B01J37/025 ,  B01J37/08

Abstract: The invention relates to a single layer high performance catalyst containing on an inert carrier body a catalytic coating comprising platinum, rhodium and various oxide mate-rials. The catalyst is characterised in that the catalytic coating comprises at least one first support material selected from the group comprising a first active alumina, ceria rich ceria/zirconia mixed oxide and a zirconia component, said at least one first support material being catalysed with a first part of the total platinum amount of t he catalyst, and a second support material catalysed with the second part of the total platinum amount and with rhodium said second support material being a second active alumina.

公开(公告)号：CA2234355C

公开(公告)日：2007-06-26

申请号：CA2234355

申请日：1998-04-08

Applicant: DEGUSSA

Inventor： LOX EGBERT ,  KREUZER THOMAS ,  MUSSMANN LOTHAR ,  LINDNER DIETER ,  VAN YPEREN RENEE

IPC: B01J23/63 ,  B01D53/94 ,  B01J20/06 ,  B01J21/04 ,  B01J23/02 ,  B01J23/44 ,  B01J23/58 ,  B01J23/78 ,  B01J23/89 ,  B01J37/18 ,  F01N3/00

Abstract: The invention relates to a single-layered three-way catalytic converter containing only palladium, with high activity and heat resistance. The catalyst contains, in addition to finely divided, stabilised aluminium oxide, at least one finely divided cerium/zirconium mixed oxide and optionally finely divided nickel oxide, as well as highly dispersed amounts of cerium oxide, zirconium oxide and barium oxide. The palladium is distributed largely uniformly throughout the entire catalyst.

公开(公告)号：ZA200102502B

公开(公告)日：2001-09-28

申请号：ZA200102502

申请日：2001-03-27

Applicant: DMC2 DEGUSSA METALS CATALYSTS CERDEC AG

Inventor： MUSSMANN LOTHAR ,  VOTSMEIER MARTIN ,  KREUZER THOMAS ,  LINDNER DIETER ,  LOX EGBERT

IPC: F01N3/10 ,  B01D53/86 ,  B01D53/94 ,  B01J23/42 ,  B01J23/46 ,  B01J23/63 ,  B01J37/02 ,  B01J ,  B01D

Abstract: A single layer high performance catalyst containing on an inert carrier body a catalytic coating comprising platinum, rhodium and various oxide materials. The catalyst contains a catalytic coating having at least one first support material selected from the group having a first active alumina, a ceria rich ceria/zirconia mixed oxide and a zirconia component, said at least one first support material being catalyzed with a first part of the total platinum amount of the catalyst, and a second support material catalyzed with the second part of the total platinum amount and with rhodium said second support material being a second active alumina.

公开(公告)号：AU4466799A

公开(公告)日：2000-03-09

申请号：AU4466799

申请日：1999-08-23

Applicant: DEGUSSA

Inventor： STREHLAU WOLFGANG ,  DOMESLE RAINER ,  MUSSMANN LOTHAR ,  GOBEL ULRICH

IPC: B01D53/86 ,  B01D53/94 ,  B01J20/04 ,  B01J20/30 ,  B01J23/02 ,  B01J23/10 ,  B01J23/58 ,  B01J23/63 ,  B01J35/02 ,  B01J37/03 ,  F01N3/08 ,  F02B1/04 ,  B01D53/56

Abstract: The carrier material is selected from a group doping/donating cerium oxide, cerium/zircon-mixed oxide, calcium titanate, strontium titanate, barium titanate, barium stannate, barium zirconate, magnesium oxide, lanthan oxide, praseodymium oxide, samarium oxide, neodymium oxide, yttrium oxide, yttrium barium cuprate, lead titanate, bismuth titanate, lanthan cobaltate, lanthan manganate and barium cuprate or a mixture. The particles of the storage components has particle diameter of at least 1.5 micronmeter. Nitrogen oxide-storage material comprises at least a storage component for nitrogen oxide in the form of particles of oxide(s), carbonate(s), or hydroxide(s) of earth metals magnesium calcium, strontium and barium as well as alkali metals potassium and caesium on a carrier material. Independent claims are include for the production of storage material and use of nitrogen oxide-storage.