公开(公告)号：DE2937802A1

公开(公告)日：1981-04-09

申请号：DE2937802

申请日：1979-09-19

Applicant: DEGUSSA

Inventor： BOZON ALFRED ,  KOBERSTEIN EDGAR DR ,  PLETKA HANS-D DR ,  VOELKER HERBERT ING GRAD

IPC: G01N27/12 ,  B01D53/86 ,  F02B77/08 ,  F02D33/00 ,  F02D35/00 ,  G01N20060101 ,  G01N25/22 ,  G01N27/26 ,  G01N27/30 ,  G01N27/403 ,  G01N27/407 ,  G01N27/409 ,  G01N27/413 ,  G01N27/417 ,  G01N27/50

Abstract: An improved lambda sensor is disclosed for the measurement of the oxygen content in the exhaust gas of internal combustion engines in which the sensor element is provided with a gas permeable wrapping coated with a catalyst. The sensor delivers a clear well defined signal in the so-called rich exhaust gas, which makes possible a more precise adjustment of the fuel-air mixture fed to the internal combustion engine.

公开(公告)号：DE2937757A1

公开(公告)日：1981-04-09

申请号：DE2937757

申请日：1979-09-19

Applicant: DEGUSSA

Inventor： BOZON ALFRED ,  KOBERSTEIN EDGAR DR ,  PLETKA HANS-D DR ,  VOELKER HERBERT ING GRAD

IPC: B01D53/86 ,  B01D46/52 ,  B01J35/04 ,  F01N3/022 ,  F01N3/28 ,  B07B1/46 ,  F01N3/08

Abstract: A mechanically stable screen cloth construction is disclosed which is suitable for a catalyst support.

公开(公告)号：DE2907106A1

公开(公告)日：1980-09-04

申请号：DE2907106

申请日：1979-02-23

Applicant: DEGUSSA

Inventor： BOZON ALFRED ,  KOBERSTEIN EDGAR DR ,  PLETKA HANS-D DR ,  VOELKER HERBERT ING GRAD ,  LAKATOS EDUARD DR

IPC: B01D53/94 ,  B01J23/89 ,  B01J37/02 ,  F02B1/04 ,  F01N3/15

Abstract: A three-way catalyst is described for the purification of automobile exhaust gases formed of an active substance of platinum and rhodium and possibly base metal(s) at a certain weight ratio between the two noble metals and at a certain atomic ratio between the noble and the base metal, which are precipitated onto active aluminum oxide containing certain quantities of CeO2, ZrO2 and Fe2O3, and whereby the catalyst is obtained by impregnating active aluminum oxide, possibly stabilized with alkaline earth metal, with a solution of cerium, zirconium and iron salt which is thereupon calcined in air at 500 DEG -700 DEG C. and then treated after application of an impregnation of salts of the active substance components in a gas current containing hydrogen at temperatures below 650 DEG C.

公开(公告)号：DE3036130A1

公开(公告)日：1982-05-06

申请号：DE3036130

申请日：1980-09-25

Applicant: DEGUSSA

Inventor： BOZON ALFRED ,  KOBERSTEIN EDGAR DR ,  PLETKA HANS-D DR ,  VOELKER HERBERT ING GRAD

IPC: F02D33/00 ,  F01N3/20 ,  F02D35/00

公开(公告)号：DE2658368A1

公开(公告)日：1978-07-06

申请号：DE2658368

申请日：1976-12-23

Applicant: DEGUSSA

Inventor： PLETKA HANS-D DR ,  ZEZULKA GERD

IPC: C08K5/00 ,  C07F9/02 ,  C07F9/141 ,  C07F9/16 ,  C07F9/165 ,  C08K5/548 ,  C08L7/00 ,  C08L21/00 ,  C08K5/54

Abstract: There are prepared compounds of the formula [Rn1(R2O)3-n-Si-Alk-S-]xZ(I) where Z is 3BOND PO, 3BOND PS, 3BOND P, =PR, -P(R)2, -P(OR)2, =P(OR), -PO(OR)2, -PS(OR)2, =PO(OR) or =PS(OR) where R is an alkyl group of 1 to 5 carbon atoms, phenyl or o-, m- or p-nitrophenyl; Alk is an alkylene group with 2 to 4 carbon atoms; R1 is an alkyl group having 1 to 5 carbon atoms, benzyl or phenyl; R2 is an alkyl group having 1 to 5 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, phenyl, benzyl or 2-methoxyethyl, each R1 and R2 can have the same or different meanings; n is 0, 1 or 2; and, x is 1, 2 or 3, being the residual valence of Z. The compounds are useful as reinforcing agents in vulcanizable rubber mixtures which contain a silicate filler and optionally carbon black.