27.
    发明专利
    未知

    公开(公告)号:DE10111197A1

    公开(公告)日:2002-09-19

    申请号:DE10111197

    申请日:2001-03-08

    Applicant: BASF AG

    Abstract: A process for producing catalysts that contain pacified copper and zinc oxide and/or aluminum oxide, comprises: (i) Precipitating a mixture of catalyst precursors which are dissolved in a solvent or in a sludge, using precipitating agents that contain anions. (ii) The mixture is washed and dried to form a solid catalyst precursor in powder or granulate form. (iii) The precursors are calcined until the anion content is 0.1-2.5wt%. (iv) The calcined precursors are then shaped and reduced and pacified, to form the catalyst. (v) Precipitation tales place by the addition of carbonates, and in the precipitation of zinc and aluminum salts the Zn:Al ration is 3:1-1:3, and the alkali carbonate solution has a pH of 5-12 and a temperature of 20-100 degrees C. (vi) The precipitate is separated and washed to remove the alkali ions. (vii) After drying, calcining takes place at 250-800 degrees C.

    30.
    发明专利
    未知

    公开(公告)号:DE19915681A1

    公开(公告)日:2000-10-12

    申请号:DE19915681

    申请日:1999-04-07

    Applicant: BASF AG

    Abstract: The invention relates to a method for producing catalysts by immersion coating a metallic support with at least one platinum metal. An aqueous medium which comprises at least one platinum metal complex, at least one reduction agent and at least one complexer and which has a pH value of more than 4 is brought into contact with the metallic support in order to deposit the platinum metal, the platinum metal being deposited in the form of discreet, immobilised particles. The invention also relates to the catalysts obtained using this method and to their use for producing hydrogen peroxide and for hydrogenating organic compounds.

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