Transition metal aerogel-supported catalyst
    1.
    发明授权
    Transition metal aerogel-supported catalyst 失效
    过渡金属气凝胶负载催化剂

    公开(公告)号:US06307116B1

    公开(公告)日:2001-10-23

    申请号:US08490573

    申请日:1995-06-15

    IPC分类号: C07C502

    摘要: A process for preparing a supported catalyst comprising a transition metal selected from palladium, platinum, nickel, cobalt or copper on an aerogel support, which includes the steps of providing a mixture containing an alkoxide precursor of the aerogel, a chelate complex of the transition metal with a chelating agent having Si(OR)3 anchor groups, and an organic solvent in which the chelate complex is soluble; hydrolyzing the mixture by admixing it with water to form a gel; and converting the gel under supercritical conditions into the transition metal aerogel-supported catalyst. The supported catalyst has an especially homogeneous distribution of the metal component and is suitable, for example, for use as a hydrogenation catalyst.

    摘要翻译: 一种制备负载型催化剂的方法,该催化剂包含在气凝胶载体上选自钯,铂,镍,钴或铜的过渡金属,其包括以下步骤:提供含有气凝胶的醇盐前体的混合物,过渡金属的螯合络合物 与具有Si(OR)3锚定基团的螯合剂和螯合络合物可溶的有机溶剂; 通过将混合物与水混合以形成凝胶来水解混合物; 并在超临界条件下将凝胶转化为过渡金属气凝胶负载的催化剂。 负载型催化剂具有金属组分特别均匀的分布,并且适用于例如用作氢化催化剂。

    Transition metal aerogel-supported catalyst
    4.
    发明授权
    Transition metal aerogel-supported catalyst 失效
    过渡金属气凝胶负载催化剂

    公开(公告)号:US5538931A

    公开(公告)日:1996-07-23

    申请号:US258627

    申请日:1994-06-10

    摘要: A process for preparing a supported catalyst comprising a transition metal selected from palladium, platinum, nickel, cobalt or copper on an aerogel support, which includes the steps of providing a mixture containing an alkoxide precursor of the aerogel, a chelate complex of the transition metal with a chelating agent having Si(OR).sub.3 anchor groups, and an organic solvent in which the chelate complex is soluble; hydrolyzing the mixture by admixing it with water to form a gel; and converting the gel under supercritical conditions into the transition metal aerogel-supported catalyst. The supported catalyst has an especially homogeneous distribution of the metal component and is suitable, for example, for use as a hydrogenation catalyst.

    摘要翻译: 一种制备负载型催化剂的方法,该催化剂包含在气凝胶载体上选自钯,铂,镍,钴或铜的过渡金属,其包括以下步骤:提供含有气凝胶的醇盐前体的混合物,过渡金属的螯合络合物 与具有Si(OR)3锚定基团的螯合剂和螯合络合物可溶的有机溶剂; 通过将混合物与水混合以形成凝胶来水解混合物; 并在超临界条件下将凝胶转化为过渡金属气凝胶负载的催化剂。 负载型催化剂具有金属组分特别均匀的分布,并且适用于例如用作氢化催化剂。