公开(公告)号：EP0687245B1

公开(公告)日：1998-04-08

申请号：EP94907569

申请日：1994-02-15

Applicant: DEGUSSA

Inventor： KLASEN CLAAS-JUERGEN ,  BERTSCH-FRANK BIRGIT ,  LIESER THOMAS ,  SCHUBERT PETER ,  MUELLER KLAUS

IPC: B01D12/00 ,  C01B15/10 ,  C11D3/39 ,  C11D17/00

CPC classification number: C01B15/106 ,  C11D3/3937 ,  C11D3/3942 ,  C11D17/0039

Abstract: The invention relates to a process for improving the storage stability of sodium percarbonate (2Na2CO3.3H2O2) by encasing it in sodium perborate. According to the invention, sodium percarbonate wet salt, obtained by the reaction of soda with hydrogen peroxide in the aqueous phase and separating the salt from the aqueous phase, is treated with a sodium perborate-containing solution or suspension in a solid-liquid separation device according to a process of displacement wash. The invention provides longer storage stability with a thinner perborate coating than prior art processes.

公开(公告)号：ES2010494A4

公开(公告)日：1989-11-16

申请号：ES89100695

申请日：1989-01-17

Applicant: DEGUSSA-HULS AG ,  DEGUSSA

Inventor： ENGLER BERND ,  KOBERSTEIN EDGAR ,  SCHUBERT PETER ,  DOMESLE RAINER

IPC: B01D53/94 ,  B01J23/56 ,  B01J23/63 ,  B01J23/89 ,  B01J37/02

Abstract: LA INVENCION EN CUANTO A UN CATALIZADOR DE OXIDO DE ALUMINIO ACTIVO CON ADICIONES CEO2, ZRO2 Y FEO3 Y/O NIO COMO PORTADOR Y UNA FASE ACTIVA DE PLATINO, PALADIO Y/O RODIO Y UN METAL INNOBLE, QUE ESTA OBTENIDA A TRAVES DE IMPREGNAR AL PORTADOR QUE CONTIENE LAS ADICIONES, CON DISOLUCIONES DE SALES DE LOS METALES PARA LA FASE ACTIVA, CON LO CUAL EL METAL INNOBLE ESTA DE LA FASE ACTIVA CER, SECAR Y CALENTAR A 250 HASTA 650 C. EL CATALIZADOR SE PUEDE TAMBIEN UTILIZAR PARA LA OXIDACION Y/O REDUCCION DE LOS GASES PERDIDOS DE MOTORES DE COMBUSTION INTERNA.

公开(公告)号：DE59405647D1

公开(公告)日：1998-05-14

申请号：DE59405647

申请日：1994-02-15

Applicant: DEGUSSA

Inventor： KLASEN CLAAS-JUERGEN ,  BERTSCH-FRANK BIRGIT ,  LIESER THOMAS ,  SCHUBERT PETER ,  MUELLER KLAUS

IPC: B01D12/00 ,  C01B15/10 ,  C11D3/39 ,  C11D17/00

Abstract: PCT No. PCT/EP94/00422 Sec. 371 Date Sep. 28, 1995 Sec. 102(e) Date Sep. 28, 1995 PCT Filed Feb. 15, 1994 PCT Pub. No. WO94/20413 PCT Pub. Date Sep. 15, 1994The invention relates to a method for increasing the storage stability of sodium percarbonate (2 Na2CO3.3 H2O2) by coating with a sodium perborate. According to the present invention wet sodium percarbonate salt, obtained by reacting sodium carbonate with hydrogen peroxide in aqueous phase and separating the salt from the aqueous phase, is treated with a solution or suspension containing sodium perborate in a solid-liquid separator by a kind of displacement wash. In contrast to previously known methods, according to the present invention a greater storage stability is attained with smaller quantities of perborate coating.

公开(公告)号：FI97334C

公开(公告)日：1996-12-10

申请号：FI900516

申请日：1990-02-01

Applicant: DEGUSSA

Inventor： KOBERSTEIN EDGAR ,  ENGLER BERND ,  DOMESLE RAINER ,  SCHUBERT PETER

IPC: F01N3/28 ,  B01D53/94 ,  B01J23/10 ,  B01J23/54 ,  B01J23/56 ,  B01J23/63 ,  B01J23/89 ,  B01J32/00

公开(公告)号：SI9400104A

公开(公告)日：1994-09-30

申请号：SI9400104

申请日：1994-03-01

Applicant: DEGUSSA

Inventor： KLASSEN CLASS ,  BERTSCH-FRANK BIRGIT ,  LIESER THOMAS ,  SCHUBERT PETER ,  MUELLER KLAUS

IPC: B01D12/00 ,  C01B15/10 ,  C11D3/39 ,  C11D17/00

Abstract: PCT No. PCT/EP94/00422 Sec. 371 Date Sep. 28, 1995 Sec. 102(e) Date Sep. 28, 1995 PCT Filed Feb. 15, 1994 PCT Pub. No. WO94/20413 PCT Pub. Date Sep. 15, 1994The invention relates to a method for increasing the storage stability of sodium percarbonate (2 Na2CO3.3 H2O2) by coating with a sodium perborate. According to the present invention wet sodium percarbonate salt, obtained by reacting sodium carbonate with hydrogen peroxide in aqueous phase and separating the salt from the aqueous phase, is treated with a solution or suspension containing sodium perborate in a solid-liquid separator by a kind of displacement wash. In contrast to previously known methods, according to the present invention a greater storage stability is attained with smaller quantities of perborate coating.

公开(公告)号：MX170849B

公开(公告)日：1993-09-20

申请号：MX1931890

申请日：1990-01-30

Applicant: DEGUSSA

Inventor： SCHUBERT PETER ,  KOBERSTEIN EDGAR ,  ENGLER BERND ,  DOMESLE RAINER

IPC: F01N3/28 ,  B01D53/94 ,  B01J23/10 ,  B01J23/54 ,  B01J23/56 ,  B01J23/63 ,  B01J23/89 ,  B01J23/42 ,  B01D53/36

Abstract: The invention relates to a support material for catalysts containing a platinum group metal for motor vehicle exhaust gas purification, the catalysts having a reduced tendency to emit H2S. The support material consists of a heat-treated, spray-dried combination of aluminium oxide and cerium oxide.

公开(公告)号：ZA91145B

公开(公告)日：1991-11-27

申请号：ZA91145

申请日：1991-01-08

Applicant: DEGUSSA

Inventor： DOMESLE RAINER ,  RAINER DOMESLE ,  ENGLER BERND ,  BERND ENGLER ,  SCHMIDT FELIX ,  FELIX SCHMIDT ,  SCHUBERT PETER ,  PETER SCHUBERT ,  KOBERSTEIN EDGAR ,  EDGAR KOBERSTEIN

IPC: B01J23/40 ,  B01D53/86 ,  B01D53/94 ,  B01J23/56 ,  B01J23/58 ,  B01J23/63 ,  B01J23/89 ,  B01J37/02 ,  F01N3/18 ,  F02B1/04 ,  B01J ,  F01N

Abstract: Catalyst for purifying i.c. engine exhaust gas has an Al2O3 support of the transition series, which contains 3-70 (wt.)% CeO2, 0-20% La2O3, opt. mixed with other rare earth metal oxides, 1-20% ZrO2, 0-10% Fe2O3 and 0-20% NiO as promoter, and has an active phase of 0.02-3% Pt and/or Pd and Rh, with a ratio of Pt and/or Pd and Rh of 1:2 to 15:1, pref. 1:1 to 3:1 and opt. a wt. ratio of Pt and Pd of 10:1 to 1:5. The opt. lattice-stabilised support is impregnated with a soln. of a promoter cpd. and/or mixed with a suspension of oxides, hydroxides or carbonates of the promoter elements and heated in air at 300-900 deg.C, then impregnated with a soln. of the noble metal cpds.,dried and opt. activated in a gas contg. H2, opt. under hydrothermal conditions, at 250-1050 deg.C. The catalyst contains base metal(s), i.e. Li, K, Rb, Mg, Ca, Ba, La, Ce, Pr, Nd, Sm, Fe, Co and/or Ni, in an amt. up to 5 times the total amt. of noble metal; and is prepd. by impregnating the support contg. promoter with a soln. (A) of Pt and/or Pd cpd(s). corresp. to at least 30% of the total amt. of Pt and/or Pd, drying and activation, then impregnating with a soln. (B) contg. Rh cpd. opt. the rest of the Pt and/or Pd cpd. and base metal cpd(s)., followed by drying and activation.

公开(公告)号：BR9000372A

公开(公告)日：1990-12-04

申请号：BR9000372

申请日：1990-01-30

Applicant: DEGUSSA

Inventor： KOBERSTEIN EDGAR ,  ENGLER BERND ,  DOMESLE RAINER ,  SCHUBERT PETER

IPC: F01N3/28 ,  B01D53/94 ,  B01J23/10 ,  B01J23/54 ,  B01J23/56 ,  B01J23/63 ,  B01J23/89 ,  B01J21/04

Abstract: The invention relates to a support material for catalysts containing a platinum group metal for motor vehicle exhaust gas purification, the catalysts having a reduced tendency to emit H2S. The support material consists of a heat-treated, spray-dried combination of aluminium oxide and cerium oxide.

公开(公告)号：ZA9000371B

公开(公告)日：1990-10-31

申请号：ZA9000371

申请日：1990-01-18

Applicant: DEGUSSA

Inventor： KOBERSTEIN EDGAR ,  EDGAR KOBERSTEIN ,  ENGLER BERND ,  BERND ENGLER ,  DOMESLE RAINER ,  RAINER DOMESLE ,  SCHUBERT PETER ,  PETER SCHUBERT

IPC: F01N3/28 ,  B01D53/94 ,  B01J23/10 ,  B01J23/56 ,  B01J23/63 ,  B01J ,  B01D

CPC classification number: B01D53/945 ,  B01J23/10 ,  B01J23/63 ,  Y02A50/2324 ,  Y02T10/22

Abstract: The invention relates to a support material for catalysts containing a platinum group metal for motor vehicle exhaust gas purification, the catalysts having a reduced tendency to emit H2S. The support material consists of a heat-treated, spray-dried combination of aluminium oxide and cerium oxide.

公开(公告)号：BR8900378A

公开(公告)日：1989-09-26

申请号：BR8900378

申请日：1989-01-30

Applicant: DEGUSSA

Inventor： DOMESLE RAINER ,  ENGLER BERND ,  KOBERSTEIN EDGAR ,  SCHUBERT PETER

IPC: B01D53/94 ,  B01J23/56 ,  B01J23/63 ,  B01J23/89 ,  B01J37/02 ,  B01J23/10 ,  B01J23/76 ,  B01D53/36

Abstract: The invention relates to an active alumina catalyst with additions of CeO2, ZrO2 and Fe2O3 and/or NiO as support and an active phase, applied thereto, of platinum, palladium and/or rhodium and a base metal, which catalyst is obtainable by impregnating the support containing the additives with solutions of salts of the metals for the active phase, the base metal of the active phase being cerium, and by drying and heating to 250 to 650 DEG C. The catalyst can be used for the oxidation and/or reduction of the exhaust gases from internal combustion engines.