公开(公告)号：AT369316T

公开(公告)日：2007-08-15

申请号：AT03708205

申请日：2003-03-10

Applicant: DEGUSSA

Inventor： KATUSIC STIPAN ,  MICHAEL GUENTHER ,  KRESS PETER ,  VARGA GEOFFREY ,  STAAB EDWIN ,  WEBER WINFRIED

IPC: B82B1/00 ,  C01G9/03 ,  A61K8/27 ,  A61Q17/04

Abstract: Nanoscale, pyrogenically produced zinc oxide having a BET surface area of 10 to 200 m2/g, which is in the form of aggregates of anisotropic primary particles and whereby the aggregates display an average diameter of 50 to 300 nm. It is obtained from zinc powder, which is converted to zinc oxide powder in the four successive reaction zones, evaporation zone, nucleation zone, oxidation zone and quench zone. It can be used in sunscreen formulations.

公开(公告)号：SG130113A1

公开(公告)日：2007-03-20

申请号：SG2006052005

申请日：2006-08-02

Applicant: DEGUSSA

Inventor： KATUSIC STIPAN ,  KRILL DR MICHAEL ,  KR MICHAEL

Abstract: Ceric oxide powder (I) of crystalline primary particles with carbonate groups on surface and in layer near surface has Brunauer Emmett Teller (BET) surface area 25-150 m 2>/g, average primary particle diameter 5-50 nm and surface layer about 5 nm deep; has carbonate concentration decreasing continuously from surface, so that carbon (C) content from carbonate groups is 5-50 area-% at surface and 0-30 area-% at depth of about 5 nm; and contains not less than 99.5 wt.% ceric oxide, calculated as CeO 2, and 0.01-0.3 wt.% (in)organic C with respect (I). Independent claims are included for the following: (1) production of (I); (2) (I) produced by this process; (3) dispersion containing (I); (4) use of (I) or dispersion for chemical-mechanical polishing; (5) use of (I) as catalyst, UV absorber, toner component or constituent of fuel cells.

公开(公告)号：DE102005029542A1

公开(公告)日：2006-08-10

申请号：DE102005029542

申请日：2005-06-25

Applicant: DEGUSSA

Inventor： KATUSIC STIPAN ,  KRAEMER MICHAEL ,  KROELL MICHAEL ,  KRESS PETER ,  STAAB EDWIN

IPC: C01G1/02 ,  C01G99/00

Abstract: Preparing metallic oxide powders having Brunauer-Emmett-Teller (BET) surface, comprises reacting an aerosol with oxygen and separating gaseous material powder, where at least one aerosol raw material and at least one atomization gas are provided via a nozzle and a multi-material nozzle, respectively, the volume related average diameter of the aerosol is 30-100 mu m and the number of aerosol drops that are larger than 100 mu m amounts up to 10%. Preparation of metallic oxide powders having Brunauer-Emmett-Teller (BET) surface of at least 20 m 2>/g comprises reacting an aerosol with oxygen in a reaction area at above 700[deg]C and separating gaseous material powder, where at least one of aerosol raw material, in liquid form or as solution, is provided via a nozzle and at least one atomization gas is provided via a multi-material nozzle, the volume related average diameter D 30 of the aerosol is 30-100 mu m and the number of aerosol drops, which are larger than 100 mu m, amounts up to 10%, related to the total number of the drops. An independent claim is included for the metallic oxide powder obtained by the method.

公开(公告)号：DE10342826B3

公开(公告)日：2005-05-12

申请号：DE10342826

申请日：2003-09-17

Applicant: DEGUSSA

Inventor： KROELL MICHAEL ,  MICHAEL GUENTHER ,  HAHN RAINER ,  KATUSIC STIPAN ,  HEBERER STEFAN ,  BRANDES RALPH

IPC: B32B5/16 ,  C01F17/00 ,  C09G1/02 ,  C09K3/14

Abstract: A dispersion of pyrogenically produced cerium oxide, which does not contain any particles larger than 1 mum, is produced by dispersing a pyrogenically produced cerium oxide in water by means of a dissolver, centrifuging it, separating the supernatant from the bottom product, and again dispersing the supernatant by means of ultrasound. The dispersion can be used for chemical-mechanical polishing (CMP).

公开(公告)号：DE10343728A1

公开(公告)日：2005-04-21

申请号：DE10343728

申请日：2003-09-22

Applicant: DEGUSSA

Inventor： KATUSIC STIPAN ,  KRAEMER MICHAEL ,  KRES PETER ,  MIESS HORST ,  ZIMMERMANN GUIDO ,  ALBERS PETER

IPC: C01G9/03 ,  C09C1/04 ,  C01G9/02 ,  A61K7/42 ,  B01J23/06

Abstract: Pyrogenically prepared zinc oxide powder having a BET surface area of from 10 to 200 m 2 /g, which is in the form of aggregates, the aggregates being composed of particles having different morphologies, and 0-10% of the aggregates being in a circular form, 30-50% being in an ellipsoidal form, 30-50% being in a linear form and 20-30% being in a branched form. It is prepared by reacting a starting mixture containing zinc vapour, a combustible gas and steam or a mixture of steam and carbon dioxide in a flame with an oxygen-containing gas in an oxidation zone, cooling the hot reaction mixture in a quenching zone and separating the solid material from the gas stream, the amount of oxygen in the oxidation zone being greater than the amount necessary for the complete oxidation of the combustible gas and the zinc vapour. The zinc oxide powder can be used as a constituent of sun protection compositions for protection against UV radiation.

公开(公告)号：DE10337199A1

公开(公告)日：2005-03-10

申请号：DE10337199

申请日：2003-08-13

Applicant: DEGUSSA

Inventor： KATUSIC STIPAN ,  HERBERER STEFAN ,  KRAEMER MICHAEL ,  KRES PETER ,  KROELL MICHAEL ,  STAAB EDWIN

IPC: B01J23/10 ,  B01J35/02 ,  B01J35/10 ,  B01J37/00 ,  B01J37/02 ,  C01F17/00 ,  C09K3/14 ,  H01L21/302

Abstract: Polycrystalline cerium oxide powder (I) in the form of aggregates of primary particles has a specific surface area of 70-150 m 2>/g, average primary particle diameter of 5-20 nm and average projected aggregate diameter (equivalent circle diameter, ECD) of 20-100 nm. Independent claims are included for: (1) the preparation of (I); (2) dispersions containing (I); and (3) the production of the dispersions.

公开(公告)号：DE10251029A1

公开(公告)日：2004-05-19

申请号：DE10251029

申请日：2002-11-02

Applicant: DEGUSSA

Inventor： KATUSIC STIPAN ,  MICHAEL GUENTHER ,  MIESS HORST ,  SCHOLZ MARIO ,  KUNZMANN KURT ,  ALBERS PETER

IPC: B01J23/10 ,  B01J35/10 ,  C01F17/00 ,  C09K3/14 ,  B01J23/54 ,  C08K3/22

Abstract: Pyrogenically-produced cerium oxide of BET surface area 15-200 m2/g comprises: (a) a coarse fraction of crystalline, non- aggregated particles of average diameter 30-200 nm; and (b) a fine fraction of fine, crystalline aggregated primary particles of average aggregate diameter 5-50 nm. An Independent claim is also included for production of the cerium oxide.

公开(公告)号：DE50002137D1

公开(公告)日：2003-06-18

申请号：DE50002137

申请日：2000-03-02

Applicant: DEGUSSA

Inventor： BERTSCH-FRANK DR ,  HEMME DR ,  VON HIPPEL DR ,  KATUSIC STIPAN

IPC: B01J23/40 ,  B01J23/44 ,  B01J23/48 ,  B01J37/08 ,  C01B15/029

Abstract: In direct synthesis of hydrogen peroxide from hydrogen and oxygen using a heterogeneous noble metal catalyst and optionally solvent, the catalyst is based on palladium or NOTLESS 2 metals of the platinum group and sub-group I. In direct synthesis of hydrogen peroxide from hydrogen and oxygen using a heterogeneous noble metal catalyst and optionally solvent, the catalyst is based on palladium or NOTLESS 2 metals of the platinum group and sub-group I. It is produced by passing particles of a solution or suspension of metal compound(s) in a carrier gas into a spray or flame pyrolysis reactor and separating the resultant metal or alloy particles from the gas stream.

公开(公告)号：DE10129376A1

公开(公告)日：2003-01-09

申请号：DE10129376

申请日：2001-06-20

Applicant: DEGUSSA

Inventor： SERVATY SABINE ,  MICHAEL GUENTHER ,  HEYER CHRISTIANE ,  KATUSIC STIPAN ,  MIESS HORST ,  KRES PETER

IPC: C01G15/00 ,  C01G19/00 ,  C09D5/24 ,  C09D7/12 ,  C09D201/00 ,  H01B1/08 ,  C09D5/25

Abstract: Indium-tin oxide (I) is claimed, with physical-chemical parameters comprising average particle size 1-200 nm (tunneling electron microscope); BET surface area 0.1-300 m /g (DIN 66131); structure (x-ray diffraction) cubic indium oxide, tetragonal tin oxide; mesopores 0.03-0.30 ml/g (BJH method to DIN 66134); macropores 1.5-5.0 ml/g (DIN 66133); and bulk density 50-2000 g/l (DIN-ISO 787/XI). An Independent claim is also included for the preparation of (I) by mixing a solution of an indium salt with a solution of a tin salt, adding a solution of a salt of doping component(s) if necessary, atomizing the mixed solution, pyrolyzing and separating the product from the waste gases.

公开(公告)号：DE19912733A1

公开(公告)日：2000-09-21

申请号：DE19912733

申请日：1999-03-20

Applicant: DEGUSSA

Inventor： BERTSCH-FRANK BIRGIT ,  HEMME INA ,  HIPPEL LUKAS VON ,  KATUSIC STIPAN ,  ROLLMANN JUERGEN

IPC: B01J23/40 ,  B01J23/44 ,  B01J23/48 ,  B01J37/08 ,  C01B15/029 ,  C01B15/01 ,  B01J23/38

Abstract: In direct synthesis of hydrogen peroxide from hydrogen and oxygen using a heterogeneous noble metal catalyst and optionally solvent, the catalyst is based on palladium or NOTLESS 2 metals of the platinum group and sub-group I. In direct synthesis of hydrogen peroxide from hydrogen and oxygen using a heterogeneous noble metal catalyst and optionally solvent, the catalyst is based on palladium or NOTLESS 2 metals of the platinum group and sub-group I. It is produced by passing particles of a solution or suspension of metal compound(s) in a carrier gas into a spray or flame pyrolysis reactor and separating the resultant metal or alloy particles from the gas stream.