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    Hydrogenation catalyst, its preparation and use
    1.
    发明授权
    Hydrogenation catalyst, its preparation and use 有权
    氢化催化剂，其制备及应用

    公开(公告)号：US07622416B2

    公开(公告)日：2009-11-24

    申请号：US11314943

    申请日：2005-12-21

    申请人： Chaolin Zhang ,  Zheng Chu ,  Wei Huang ,  Aijun Yang ,  Miao Xue ,  Hanqiang Jin

    发明人： Chaolin Zhang ,  Zheng Chu ,  Wei Huang ,  Aijun Yang ,  Miao Xue ,  Hanqiang Jin

    IPC分类号： B01J20/34 ,  B01J38/48 ,  B01J21/18 ,  B01J23/40 ,  B01J23/74 ,  C07C51/42

    CPC分类号： C07C51/487 ,  B01J21/18 ,  B01J23/44 ,  B01J35/002 ,  B01J35/006 ,  B01J35/0073 ,  B01J37/031 ,  B01J37/16 ,  C07C63/26

    摘要： The present invention discloses a hydrogenation catalyst comprising metallic palladium supported on activated carbon support, wherein the penetration depth of metallic palladium in the support is at least about 10 μm and up to about 100 μm, the crystallite size of palladium is between about 40 Å and about 120 Å, and the palladium in the surface layer from the surface of support to a depth of 1 μm is from about 5% to about 40% based on the total atom number of palladium and other elements. The present invention further discloses a process for preparing the hydrogenation catalyst, and a use of said hydrogenation catalyst in the purification of crude terephthalic acid.

    摘要翻译： 本发明公开了一种氢化催化剂，其包含负载在活性炭载体上的金属钯，其中载体中金属钯的渗透深度至少约为10微米至高达约100微米，钯的微晶尺寸介于约40埃至 约120埃，从载体表面到表面层的1毫米的钯基于钯和其它元素的总原子数为约5％至约40％。 本发明还公开了一种制备氢化催化剂的方法，以及所述氢化催化剂在粗对苯二甲酸的纯化中的用途。