RECONSTITUTED DEHYDROGENATION CATALYST SHOWING SLOWED ACTIVITY LOSS WHEN COMPARED WITH FRESH CATALYST
    1.
    发明申请
    RECONSTITUTED DEHYDROGENATION CATALYST SHOWING SLOWED ACTIVITY LOSS WHEN COMPARED WITH FRESH CATALYST 审中-公开
    与新鲜催化剂比较时,重新发现的脱氢催化剂显示出缓慢的活性损失

    公开(公告)号:US20140371501A1

    公开(公告)日:2014-12-18

    申请号:US14366611

    申请日:2013-02-06

    IPC分类号: B01J23/62 C07C5/32

    摘要: A process for dehydrogenating alkane or alkylaromatic compounds comprising contacting the given compound and a dehydrogenation catalyst in a fluidized bed. The dehydrogenation catalyst is prepared from an at least partially deactivated platinum/gallium catalyst on an alumina-based support that is reconstituted by impregnating it with a platinum salt solution, then calcining it at a temperature from 400° C. to 1000° C., under conditions such that it has a platinum content ranging from 1 to 500 ppm, based on weight of catalyst; a gallium content ranging from 0.2 to 2.0 wt %; and a platinum to gallium ratio ranging from 1:20,000 to 1:4. It also has a Pt retention that is equal to or greater than that of a fresh catalyst being used in a same or similar catalytic process.

    摘要翻译: 一种使烷烃或烷基芳族化合物脱氢的方法,包括在流化床中使给定化合物和脱氢催化剂接触。 脱氢催化剂由氧化铝基载体上的至少部分失活的铂/镓催化剂制备,其通过用铂盐溶液浸渍而重新构成,然后在400℃至1000℃的温度下煅烧, 在其基于催化剂重量的铂含量为1至500ppm的条件下进行; 镓含量范围为0.2-2.0重量%; 铂与镓之比为1:20,000至1:4。 它还具有等于或大于在相同或相似催化过程中使用的新鲜催化剂的Pt保留。