11.
    发明专利
    未知

    公开(公告)号:DE102005003315A1

    公开(公告)日:2006-08-03

    申请号:DE102005003315

    申请日:2005-01-24

    Applicant: BASF AG

    Abstract: A process for preparing a xylylenediamine by heterogeneously catalyzed hydrogenation of a phthalonitrile, wherein the hydrogenation is carried out in the presence of a cobalt skeletal catalyst, of an alkali metal hydroxide and of an alcohol and/or ether as the solvent, at an absolute pressure in the range from 1 to 100 bar and a temperature in the range from 40 to 150° C.

    Metallic oxide catalyst carrier of group four, with a monomodal pore radius distribution, useful in preparing catalyst for the dehydrogenation of methylpiperidine to methylpicoline

    公开(公告)号:DE102006058624A1

    公开(公告)日:2007-07-19

    申请号:DE102006058624

    申请日:2006-12-13

    Applicant: BASF AG

    Abstract: Catalyst carrier (I), preferably of metallic oxide of the group 4, where the catalyst carrier exhibits an essential monomodal pore radius distribution. Independent claims are included for: (1) a catalyst comprising (I) and a catalytic active material; (2) the preparation of the catalyst comprising converting catalyst carrier with at least bimodal pore radius distribution into catalyst carrier with monomodal pore radius distribution; providing an active component on the catalyst carrier; and drying the obtained catalyst, where the steps of providing and drying is repeated several time to obtain the product; (3) a procedure for the preparation of the catalyst carrier comprising treating (I) with at least bimodal pore radius distribution to obtain an essentially monomodal pore radius distribution; and (4) a procedure for recycling the catalyst containing catalyst carrier comprising two successive steps, in which the catalyst is heated in presence of oxygen with the condition that in each following steps, the temperature and oxygen content lies more higher with the previous steps.

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