公开(公告)号：AU2249899A

公开(公告)日：1999-10-07

申请号：AU2249899

申请日：1999-03-29

Applicant: DEGUSSA

Inventor： STREHLAU WOLFGANG ,  DOMESLE RAINER ,  MULLER WILFRIED ,  LOX EGBERT ,  GOBEL ULRICH

IPC: B01D53/86 ,  B01D53/94 ,  B01J21/16 ,  F01N3/08 ,  F01N3/10 ,  F01N3/20 ,  F01N3/24 ,  F01N3/28 ,  F01N9/00 ,  F01N13/02 ,  F02D41/02 ,  F02D41/14

Abstract: An internal combustion engine (2) exhaust gas purification device (1) is operated predominantly using lean air-fuel ratios. It has a sulfur filter (5) followed by a NOx storage catalyzer (6). Process for operating an internal combustion engine exhaust gas purification device comprises:- (a) storing the nitrogen oxides in the exhaust gas on a storage catalyst and the sulfur oxides on the sulfur trap at air factors of above 1 and exhaust gas temperatures TK within the activity window DELTA TNOX, in which the exhaust gas temperature TS is smaller than the desulfurization temperature TS DeSOx, and cyclically reducing the air factor of the exhaust gas below 1 to release the stored nitrogen oxides; and (b) desulfurizing the sulfur trap by increasing the exhaust gas temperature TS above the desulfurization temperature of the sulfur trap and reducing the air factor of the exhaust gas below 1 and cyclically repeating steps (a) and (b).

公开(公告)号：CA2202417C

公开(公告)日：2006-08-15

申请号：CA2202417

申请日：1997-04-11

Applicant: DEGUSSA

Inventor： KREUZER THOMAS ,  MULLER WILFRIED ,  LOX EGBERT ,  DOMESLE RAINER ,  LINDNER DIETER ,  LEYRER JURGEN

IPC: B01D53/86 ,  B01J29/068 ,  B01D53/94 ,  B01J21/12 ,  B01J29/03 ,  B01J29/06 ,  B01J29/08 ,  B01J29/12 ,  B01J29/40 ,  B01J29/44 ,  B01J29/80

Abstract: The invention relates to a catalyst for purifying the exhaust gases from diesel engines. The catalyst contains a zeolite mixture of several zeolites with different moduli and platinum group metals as well as further metal oxides from the group comprising aluminium silicate, aluminium oxide and titanium oxide, wherein the aluminium silicate has a ratio by weight of silicon dioxide to aluminium oxide of 0.005 to 1 and the platinum group metals are deposited on only the further metal oxides.

公开(公告)号：MX9702631A

公开(公告)日：1997-10-31

申请号：MX9702631

申请日：1997-04-10

Applicant: DEGUSSA

Inventor： LEYRER JURGEN ,  LINDNER DIETER ,  LOX EGBERT ,  KREUZER THOMAS ,  MULLER WILFRIED ,  DOMESLE RAINER

IPC: B01D53/86 ,  B01D53/94 ,  B01J21/12 ,  B01J29/03 ,  B01J29/06 ,  B01J29/068 ,  B01J29/08 ,  B01J29/12 ,  B01J29/40 ,  B01J29/44 ,  B01J29/80 ,  F01N03/20 ,  B01J29/10

Abstract: La invencion se relaciona con un catalizador para la purificacion de gases de escape de motores diesel. El catalizador contiene una mezcla de zeolitas de varias zeolitas con diferentes modulos y metales del grupo del platino así como otros oxidos de metales del grupo silicato de aluminio, oxido de aluminio y oxido de titanio, donde el silicato de aluminio presenta una relacion de pesos de dioxido de silicio/oxido de aluminio de 0,005 a 1 y los metales del grupo del platino solo están incrustados sobre los oxidos de metales adicionales.

公开(公告)号：IN191059B

公开(公告)日：2003-09-13

申请号：IN584CA1997

申请日：1997-04-02

Applicant: DEGUSSA

Inventor： KREUZER THOMAS DR ,  MULLER WILFRIED ,  DOMESLE RAINER DR ,  LEYRER JURGEN DR ,  LINDNER DIETER DR ,  LOX EGBERT DR

IPC: B01D53/86 ,  B01D53/94 ,  B01J21/12 ,  B01J29/03 ,  B01J29/06 ,  B01J29/068 ,  B01J29/08 ,  B01J29/12 ,  B01J29/40 ,  B01J29/44 ,  B01J29/80 ,  B01J29/22 ,  B01J8/00

Abstract: Catalyst contains zeolite(s), a Pt-group metal, and metal oxide(s) selected from Al-silicate, Al2O3 and titanium oxide. The Al-silicate has a weight ratio of SiO2/Al2O3 of 0.005-1. The Pt-group metals are deposited only on the metal oxide(s).

公开(公告)号：AU735504B2

公开(公告)日：2001-07-12

申请号：AU2249899

申请日：1999-03-29

Applicant: DEGUSSA

Inventor： STREHLAU WOLFGANG ,  GOBEL ULRICH ,  LOX EGBERT ,  MULLER WILFRIED ,  DOMESLE RAINER

IPC: B01D53/86 ,  B01D53/94 ,  B01J21/16 ,  F01N3/08 ,  F01N3/10 ,  F01N3/20 ,  F01N3/24 ,  F01N3/28 ,  F01N9/00 ,  F01N13/02 ,  F02D41/02 ,  F02D41/14

Abstract: An internal combustion engine (2) exhaust gas purification device (1) is operated predominantly using lean air-fuel ratios. It has a sulfur filter (5) followed by a NOx storage catalyzer (6). Process for operating an internal combustion engine exhaust gas purification device comprises:- (a) storing the nitrogen oxides in the exhaust gas on a storage catalyst and the sulfur oxides on the sulfur trap at air factors of above 1 and exhaust gas temperatures TK within the activity window DELTA TNOX, in which the exhaust gas temperature TS is smaller than the desulfurization temperature TS DeSOx, and cyclically reducing the air factor of the exhaust gas below 1 to release the stored nitrogen oxides; and (b) desulfurizing the sulfur trap by increasing the exhaust gas temperature TS above the desulfurization temperature of the sulfur trap and reducing the air factor of the exhaust gas below 1 and cyclically repeating steps (a) and (b).

公开(公告)号：TR9900707A2

公开(公告)日：1999-10-21

申请号：TR9900707

申请日：1999-03-26

Applicant: DEGUSSA

Inventor： STREHLAU DR WOLFGANG ,  GOBEL DR ULRICH ,  LOX DR EGBERT ,  MULLER WILFRIED ,  DOMESLE DR RAINER

IPC: B01D53/86 ,  B01D53/94 ,  B01J21/16 ,  F01N3/08 ,  F01N3/10 ,  F01N3/20 ,  F01N3/24 ,  F01N3/28 ,  F01N9/00 ,  F01N13/02 ,  F02D41/14

CPC classification number: B01D53/9422 ,  B01D53/949 ,  B01D2255/102 ,  B01D2255/202 ,  B01D2255/204 ,  B01D2255/2061 ,  B01D2255/2063 ,  B01D2255/91 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/085 ,  F01N3/0871 ,  F01N13/009 ,  F01N2340/02 ,  Y02T10/22

公开(公告)号：TR199900707A2

公开(公告)日：1999-10-21

申请号：TR9900707

申请日：1999-03-26

Applicant: DEGUSSA

Inventor： STREHLAU DR WOLFGANG ,  GOBEL DR ULRICH ,  LOX DR EGBERT ,  MULLER WILFRIED ,  DOMESLE DR RAINER

IPC: B01D53/86 ,  B01D53/94 ,  B01J21/16 ,  F01N3/08 ,  F01N3/10 ,  F01N3/20 ,  F01N3/24 ,  F01N3/28 ,  F01N9/00 ,  F01N13/02 ,  F02D41/02 ,  F02D41/14

Abstract: An internal combustion engine (2) exhaust gas purification device (1) is operated predominantly using lean air-fuel ratios. It has a sulfur filter (5) followed by a NOx storage catalyzer (6). Process for operating an internal combustion engine exhaust gas purification device comprises:- (a) storing the nitrogen oxides in the exhaust gas on a storage catalyst and the sulfur oxides on the sulfur trap at air factors of above 1 and exhaust gas temperatures TK within the activity window DELTA TNOX, in which the exhaust gas temperature TS is smaller than the desulfurization temperature TS DeSOx, and cyclically reducing the air factor of the exhaust gas below 1 to release the stored nitrogen oxides; and (b) desulfurizing the sulfur trap by increasing the exhaust gas temperature TS above the desulfurization temperature of the sulfur trap and reducing the air factor of the exhaust gas below 1 and cyclically repeating steps (a) and (b).