公开(公告)号：DE10163180A1

公开(公告)日：2003-07-10

申请号：DE10163180

申请日：2001-12-21

Applicant: DEGUSSA

Inventor： TACKE THOMAS ,  KRAUSE HELMFRIED ,  LANSINK-ROTGERINK HERMANUS GER ,  CHEN BAOSHU ,  CARSON JASON

IPC: B01J31/28 ,  B01J21/08 ,  B01J23/58 ,  B01J23/60 ,  B01J23/66 ,  B01J35/02 ,  B01J35/10 ,  B01J37/02 ,  C07B61/00 ,  C07C67/055 ,  C07C69/15 ,  B01J31/04

Abstract: A supported catalyst comprising palladium and/or its compounds and alkali compounds, optionally with gold, barium and/or cadmium as the catalytically active components or a support (molded article) is characterized in that the catalyst is applied to a support having a through channel and the active components have a penetration depth of 0.5-1.5 mm measured from the surface of the support material. A supported catalyst (I) comprising palladium and/or its compounds and alkali compounds, as well as additionally gold and/or its compounds (system Pd/alkali/Au) or cadmium and/or its compounds (system Pd/alkali/Cd) or barium and/or its compounds (system Pd/alkali/Ba) or palladium, alkali compounds, and mixtures of gold and/or cadmium and/or barium as the catalytically active components or a support (molded article) is characterized in that the catalyst is applied to a support having a through channel and the active components have a penetration depth of 0.5-1.5 mm measured from the surface of the support material. Independent claims are included for: (i) a process for the production of the supported catalyst (I) by dipping, spraying, evaporating, soaking or precipitation of Pd-, Au-, Cd-, Ba-metal compounds, optionally reduction of the deposited metal compounds, optionally reduction of the deposited metal compounds, washing to remove chloride constituents and impregnation with alkali acetates or alkali compounds that are at least partially converted to alkali acetates under the reaction conditions for the production of vinyl acetate monomer; (ii) a molded article having a ring-like cylindrical state whose cross-section has a hollow cavity and having a free surface area of 1.6-77 % of the total surface area.

公开(公告)号：CA2205416C

公开(公告)日：2001-01-16

申请号：CA2205416

申请日：1997-05-15

Applicant: DEGUSSA

Inventor： PANSTER PETER ,  BURMEISTER ROLAND ,  KRAUSE HELMFRIED ,  LANSINK ROTGERINK HERMANUS ,  TACKE THOMAS

IPC: B01J21/08 ,  B01J23/52 ,  B01J23/66 ,  B01J35/10 ,  B01J37/00 ,  C01B33/12 ,  C04B35/14 ,  C04B35/634 ,  C04B35/636 ,  C07B61/00 ,  C07C29/04 ,  C07C31/08 ,  C07C31/10 ,  C07C67/035 ,  C07C67/04 ,  C07C69/15 ,  C09C1/30 ,  B01J32/00 ,  C07C31/02 ,  C07C29/05 ,  C07C67/055 ,  C07C41/06 ,  C07C43/06

Abstract: Compacts based on pyrogenically-produced silicon dioxide and having the following physical and chemical characteristics: Outer diameter 0.8 - 20 mm BET surface area 30 - 400 m2/g Pore volume 0.5 - 1.3 ml/g Breaking strength 10 to 250 N Composition > 99.8 wt.% SiO2 Other constituents

公开(公告)号：GB2326640B

公开(公告)日：2000-11-22

申请号：GB9817801

申请日：1997-04-11

Applicant: SWAN THOMAS & CO LTD ,  DEGUSSA

Inventor： POLIAKOFF MARTYN ,  SWAN THOMAS MACKLYN ,  TACKE THOMAS ,  HITZLER MARTIN GEORG ,  ROSS STEPHEN KEITH ,  WIELAND STEFAN

IPC: B01J3/00 ,  C07B35/02 ,  C07B43/04 ,  C07B61/00 ,  C07C29/132 ,  C07C29/141 ,  C07C29/145 ,  C07C29/20 ,  C07C45/58 ,  C07C209/36 ,  C07D317/66

Abstract: PCT No. PCT/GB97/01014 Sec. 371 Date Feb. 18, 1999 Sec. 102(e) Date Feb. 18, 1999 PCT Filed Apr. 11, 1997 PCT Pub. No. WO97/38955 PCT Pub. Date Oct. 23, 1997Process for the selective hydrogenation of alphatic or aromatic substrates under supercritical or near critical conditions. Hydrogenation is effected using a heterogeneous catalyst in a continuous flow reactor containing a supercritical or near critical reaction medium and selectively of product formation is achieved by varying one or more of the temperature, pressure, catalyst and flow rate.

公开(公告)号：DE19947959A1

公开(公告)日：2000-08-10

申请号：DE19947959

申请日：1999-10-06

Applicant: DEGUSSA

Inventor： KRAUSE HELMFRIED ,  LANSINK ROTGERINK HERMANUS G J ,  TACKE THOMAS ,  BURMEISTER ROLAND

IPC: B01J21/08 ,  B01J21/12 ,  B01J35/02 ,  B01J37/00 ,  C04B35/14 ,  C04B35/18

Abstract: Molded body is based on silicon dioxide and/or silicon dioxide-aluminum oxide mixed oxide. The carrier geometry is characterized by a hollow cylinder configuration with facette corners. An Independent claim is also included for a process for the production of the molded body comprising homogenizing pyrogenically manufactured silicon dioxide and/or silicon dioxide-aluminum oxide mixed oxide with methylhydroxyethylcellulose, wax, magnesium stearate, polyethylene glycol and/or urea with addition of water, drying at 80-150 deg C, optionally crushing to a powder, pressing to hollow cylinders with facette corners and tempering at 400-1200 deg C for 0.5-8 hours.

公开(公告)号：BR9902564A

公开(公告)日：2000-04-11

申请号：BR9902564

申请日：1999-06-25

Applicant: DEGUSSA

Inventor： TACKE THOMAS ,  SHINKE PETER ,  ROTGERINK HERMANUS LANSINK ,  KRAUSE HELMFRIED

IPC: C04B35/16 ,  B01J19/30 ,  B01J20/10 ,  B01J21/08 ,  B01J35/02 ,  C04B35/632 ,  C04B35/64 ,  C07C67/055 ,  C07C69/15 ,  B01J21/00 ,  B01J29/035 ,  C01B33/12 ,  B29C33/56

Abstract: Moldings based on silica having a hollow cylindrical configuration with internal reinforcing stays or spokes leading from an inner wall of a hollow cylinder to the center of the molding or in the form of miniliths having passageway channels therethrough, are produced by homogenizing silica with methyl hydroxyethyl cellulose, wax and/or polyethylene glycol. Water and optionally aqueous alkaline ammonia solution are added, and the mixture is subjected to kneading and forming, extruding, optionally cutting the extrudate to the desired length by means of a cutting device, drying at a temperature from 20 to 150° C., and annealing for a period from 30 minutes to 10 hours at a temperature of 400 to 1200° C. The moldings can be used as catalyst supports for the production of unsaturated esters from olefins, organic acids and oxygen in the gas phase and and can be used in particular for the production of vinyl acetate monomer.

公开(公告)号：DE19828491A1

公开(公告)日：1999-12-30

申请号：DE19828491

申请日：1998-06-26

Applicant: DEGUSSA

Inventor： TACKE THOMAS ,  SCHINKE PETER ,  LANSINK-ROTGERINK HERMANUS G J ,  KRAUSE HELMFRIED

IPC: C04B35/16 ,  B01J19/30 ,  B01J20/10 ,  B01J21/08 ,  B01J35/02 ,  C04B35/632 ,  C04B35/64 ,  C07C67/055 ,  C07C69/15 ,  B01J35/04 ,  C04B35/14

Abstract: A silicon dioxide molded article (I) is characterized as being in the form of a hollow cylinder having internal reinforcing stays or spokes extending from the inner wall of the cylinder at the center of the article or contains a number of through channels. Independent claims are included for: (a) a process for the production of (I) by kneading and forming and/or extruding the article, optionally cutting to length, drying at 10-150 deg C and heating at 400-1,200 deg C for 30 minutes to 10 hours; (b) a supported catalyst for the production of vinyl acetate monomer comprising (I) and a catalyst component comprising palladium and/or compounds and alkali compounds, optionally with gold (Pd/Alkali/Au), cadmium (Pd/Alkali/Cd) and/or barium (Pd/Alkali/Ba); and (c) a process for the production of the supported catalyst by impregnation, spraying, evaporation, dipping or precipitation of Pd, Au, Cd and/or Ba compounds onto (I) with optionally reduction of the reducible metal compounds, optionally washing of the chloride components, impregnation with alkali acetates or alkali compounds.

公开(公告)号：NO993160L

公开(公告)日：1999-12-27

申请号：NO993160

申请日：1999-06-25

Applicant: DEGUSSA

Inventor： TACKE THOMAS ,  SCHINKE PETER ,  ROTGERINK HERMANUS LANSINK ,  KRAUSE HELMFRIED

IPC: C04B35/16 ,  B01J19/30 ,  B01J20/10 ,  B01J21/08 ,  B01J35/02 ,  C04B35/632 ,  C04B35/64 ,  C07C67/055 ,  C07C69/15 ,  B01J32/00 ,  C07C2/08

Abstract: Moldings based on silica having a hollow cylindrical configuration with internal reinforcing stays or spokes leading from an inner wall of a hollow cylinder to the center of the molding or in the form of miniliths having passageway channels therethrough, are produced by homogenizing silica with methyl hydroxyethyl cellulose, wax and/or polyethylene glycol. Water and optionally aqueous alkaline ammonia solution are added, and the mixture is subjected to kneading and forming, extruding, optionally cutting the extrudate to the desired length by means of a cutting device, drying at a temperature from 20 to 150° C., and annealing for a period from 30 minutes to 10 hours at a temperature of 400 to 1200° C. The moldings can be used as catalyst supports for the production of unsaturated esters from olefins, organic acids and oxygen in the gas phase and and can be used in particular for the production of vinyl acetate monomer.

公开(公告)号：NO993160A

公开(公告)日：1999-12-27

申请号：NO993160

申请日：1999-06-25

Applicant: DEGUSSA

Inventor： TACKE THOMAS ,  SCHINKE PETER ,  ROTGERINK HERMANUS LANSINK ,  KRAUSE HELMFRIED

IPC: C04B35/16 ,  B01J19/30 ,  B01J20/10 ,  B01J21/08 ,  B01J35/02 ,  C04B35/632 ,  C04B35/64 ,  C07C67/055 ,  C07C69/15 ,  B01J32/00 ,  C07C2/08

CPC classification number: B01J35/026 ,  B01J19/30 ,  B01J21/08 ,  B01J2219/30223 ,  B01J2219/30416 ,  B01J2219/30475 ,  B01J2219/312 ,  C07C67/055 ,  Y10T428/131 ,  Y10T428/1317 ,  C07C69/01 ,  C07C69/15

公开(公告)号：GB2332905A

公开(公告)日：1999-07-07

申请号：GB9905939

申请日：1997-09-29

Applicant: THOMAS SWAN & COMPANY LIMITED ,  DEGUSSA

Inventor： SWAN THOMAS MACKLYN ,  ROSS STEPHEN KEITH ,  POLIAKOFF MARTYN ,  HITZLER MARTIN GEORG ,  SMAIL FIONA RUTH ,  TACKE THOMAS ,  WIELAND STEFAN

IPC: B01J3/00 ,  C07B37/02 ,  C07B37/04 ,  C07B41/06 ,  C07B61/00 ,  C07C2/66 ,  C07C2/70 ,  C07C2/86 ,  C07C15/02 ,  C07C41/30 ,  B01J31/06 ,  C07C43/205 ,  C07C45/46 ,  C07C37/14 ,  C07C37/16

Abstract: Method of performing alkylation or acylation reactions of aromatic substrates under supercritical or near-critical reaction conditions. In particular, a method of performing Friedel-Crafts alkylation or acylation reactions is disclosed under those conditions. Friedel-Crafts reactions may be effected using a hetero-geneous catalyst in a continuous flow reactor containing a super-critical or near-critical reaction medium. Selectivity of product formation can be achieved by varying one or more of the temperature, pressure, catalyst, flow rates and also by varying the ratios of aromatic substrate to acylating or alkylating agent.

公开(公告)号：ID21246A

公开(公告)日：1999-05-12

申请号：ID981480

申请日：1998-11-12

Applicant: DEGUSSA

Inventor： KRAUSE HELMFRIED ,  ROTGERINK HERMANUS LANSINK ,  FEUER OLIVER ,  TACKE THOMAS ,  PANSTER PETER

IPC: B01J21/08 ,  B01J23/54 ,  B01J32/00 ,  B28B3/20 ,  B01J35/10 ,  B01J37/00 ,  B28B11/16 ,  C01B33/12 ,  C01B33/18 ,  C04B35/14 ,  C07B61/00 ,  C07C29/04 ,  C07C31/08 ,  C07C67/055 ,  C07C69/15

Abstract: A pressed article (I) is based upon pyrogenically produced silicon dioxide having a pore volume of 0.5-1.8 ml/g. Independent claims are included for: (i) the production of (I) by mixing pyrogenically produced silicon dioxide with methylhydroxyethylcellulose, wax and polyethylene glycol and water followed by extrusion, optionally cutting the extrudate to a desired length, drying at 70-150 degrees C and heating at 400-1200 degrees C for up to 10 hours; (ii) a supported catalyst (II) comprising (I) for the production of vinylacetate monomer, that contains palladium (Pd) and/or Pd compounds and alkali compounds; gold (Au) and/or Au compound (Pd/alkali/Au system) or cadmium (Cd) and/or Cd compounds (Pd/alkali/Cd system) or barium (Ba) and/or Ba compounds (Pd/alkali/Ba system) or Pd, alkali compounds and mixture of Au and/or Cd and/or Ba; and (iii) the production of the catalyst support (II) by soaking, spraying, condensing, dipping or precipitating the Pd, Au, Cd and/or Ba compounds onto (I), optionally reducing the metal, washing to remove the resulting chloride content, impregnating with alkali acetate or alkali compound that is converted under reaction conditions at least partially to alkali acetate.