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    ZIRCONIUM-HAFNIUM MIXED OXIDE POWDER
    11.
    发明申请
    ZIRCONIUM-HAFNIUM MIXED OXIDE POWDER 审中-公开
    ZIRCONIUM-HAFNIUM混合氧化物粉末

    公开(公告)号：WO2006067132A2

    公开(公告)日：2006-06-29

    申请号：PCT/EP2005056941

    申请日：2005-12-20

    Applicant: DEGUSSA ,  KATUSIC STIPAN ,  FLESCH JUERGEN ,  HAMM VOLKER ,  KATERINAK WITOLD ,  KRAEMER MICHAEL

    Inventor： KATUSIC STIPAN ,  FLESCH JUERGEN ,  HAMM VOLKER ,  KATERINAK WITOLD ,  KRAEMER MICHAEL

    IPC: C01G27/00

    CPC classification number: B82Y30/00 ,  C01G25/00 ,  C01G27/00 ,  C01P2002/76 ,  C01P2002/88 ,  C01P2004/64 ,  C01P2006/10 ,  C01P2006/12 ,  C01P2006/22 ,  C01P2006/80 ,  C09C1/00

    Abstract: Zirconium-hafnium mixed oxide powder in the form of aggregates of primary particles having a carbon content of at most 0.05 wt . % and having the following features: - BET surface area: 60 ± 15 m 2 /g, average primary particle diameter: 2 , - average equivalent circle diameter: 2 ) : 95 to 99.9 wt.%, - hafnium dioxide (HfO 2 ) : 0.1 to 5 wt.%, carbon: 0 to 0.15 wt.%, - chloride: 0 to 0.05 wt.% the sum of the proportions of zirconium dioxide and hafnium dioxide being at least 99.8 wt.%.

    Abstract translation: 锆 - 铪混合氧化物粉末，其为碳含量最多为0.05重量％的初级颗粒的聚集体。 ％，具有以下特征：BET表面积：60±15μm2 / g，平均一次粒径：<20nm，聚集参数：平均表面积：<10000NN 2 平均当量圆直径：<100nm，平均聚集体周长：<700nm，基于每种情况的粉末的总量，二氧化锆（ZrO 2 2）的含量， ：95〜99.9重量％， - 二氧化铪（HfO 2·2）：0.1〜5重量％，碳：0〜0.15重量％， - 氯化物：0〜0.05重量％ 二氧化锆和二氧化铪的比例为至少99.8重量％。

    12.
    发明专利
    未知

    公开(公告)号：AT480503T

    公开(公告)日：2010-09-15

    申请号：AT05767070

    申请日：2005-07-19

    Applicant: EVONIK DEGUSSA GMBH

    Inventor： KATUSIC STIPAN ,  KRAEMER MICHAEL ,  MIESS HORST ,  HENNIG THOMAS ,  KRESS PETER

    IPC: C01G25/00 ,  C01F17/00

    Abstract: Nano-scale yttrium-zirconium mixed oxide powder in the form of aggregated primary particles having the following physico-chemical parameters:-BET surface area: from 40 to 100 m2/g,-da=from 3 to 30 nm, d,=mean, number-related primary particle diameter,-yttrium content, calculated as yttrium oxide Y2O3, determined by chemical analysis, from 5 to 15 wt. %, based on the mixed oxide powder,-yttrium contents of individual primary particles, calculated as yttrium oxide Y2O3 determined by TEM EDX, corresponding to the content in the powder+-10%,-content at room temperature, determined by X-ray diffraction and based on the mixed oxide powder-monoclinic zirconium oxide from

    13.
    发明专利
    未知

    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.

    14.
    发明专利
    未知

    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.

    19.
    发明专利
    未知

    公开(公告)号：DE602004009944T2

    公开(公告)日：2008-08-28

    申请号：DE602004009944

    申请日：2004-09-02

    Applicant: EVONIK DEGUSSA GMBH

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

    IPC: C09C1/04 ,  C01G9/03

    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.

    20.
    发明专利
    未知

    公开(公告)号：DE102006027335A1

    公开(公告)日：2008-01-10

    申请号：DE102006027335

    申请日：2006-06-13

    Applicant: EVONIK DEGUSSA GMBH

    Inventor： KATUSIC STIPAN ,  ZIMMERMANN GUIDO ,  KRAEMER MICHAEL ,  MIESS HORST ,  STAAB EDWIN

    IPC: C01G1/02 ,  C01G99/00

    Abstract: Process for preparing mixed metal oxide powders Abstract Process for preparing a mixed metal oxide powder, in which oxidizable starting materials are evaporated in an evaporation zone of a reactor and oxidized in the vaporous state in an oxidation zone of this reactor, the reaction mixture is cooled after the reaction and the pulverulent solids are removed from gaseous substances, wherein at least one pulverulent metal, together with one or more combustion gases, is fed to the evaporation zone, the metal is evaporated completely in the evaporation zone under nonoxidizing conditions, an oxygen-containing gas and at least one metal compound are fed, separately or together, in the oxidation zone to the mixture flowing out of the evaporation zone, the oxygen content of the oxygen-containing gas being at least sufficient to oxidize the metal, the metal compound and the combustion gas completely.

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