Multimetallic and multigradient reforming catalyst for converting paraffins to aromatics
    3.
    发明公开
    Multimetallic and multigradient reforming catalyst for converting paraffins to aromatics 失效
    Mehrmetall-Reformierungskatalysator zur Umwandlung von Paraffinen zu Aromater。

    公开(公告)号:EP0681870A1

    公开(公告)日:1995-11-15

    申请号:EP94303343.1

    申请日:1994-05-10

    申请人: UOP

    IPC分类号: B01J29/60 C10G35/095

    摘要: A reforming process, selective for the dehydrocyclization of paraffins to aromatics, is improved by using a bound catalyst containing multiple Group VIII (8-10) noble metals having different gradients within the catalyst and a nonacidic large-pore molecular sieve. The use of this catalyst results in greater selectivity of conversion of paraffins to aromatics and improved catalyst stability, particularly in the presence of small amounts of sulfur.

    摘要翻译: 通过在催化剂和非酸性大孔分子筛中使用含有多个具有不同梯度的第VIII族(8-10)族贵金属的结合催化剂,改进了选择性地将烷烃脱氢环化成芳族化合物的重整方法。 使用该催化剂导致链烷烃转化为芳族化合物和提高催化剂稳定性的更大选择性,特别是在少量硫的存在下。

    Alkylation catalysts and processes.
    9.
    发明公开
    Alkylation catalysts and processes. 失效
    不饱和脂肪酸烷基酯

    公开(公告)号:EP0272830A2

    公开(公告)日:1988-06-29

    申请号:EP87310752

    申请日:1987-12-07

    申请人: UNION OIL CO

    摘要: A process for treating a molecular sieve-containing alkylation catalyst to increase its selectivity for monoalkylation in which the alkylation catalyst is contacted with a feedstock comprising at least one organic compound under conditions such that a sufficient amount of carbonaceous material evenly deposits on the alkylation catalyst to substantially suppress its alkylation activity. The carbon-containing catalyst particles are then subjected to combustion by contacting them with a gaseous oxidizing agent at an elevated temperature to remove at least a portion of the carbonaceous material, preferably substantially all of the carbonaceous material, thereby increasing the selectivity of the catalyst for monoaklylation by at least about 1.0 percentage point. The resulting alkylation catalyst can be used to alkylate benzene and other aromatic compounds with ethylene, propylene or other olefins to produce high yields of ethylbenzene, cumene and other alkylated products. Preferably, the alkylation catalyst contains an ammonium-exchanged and steam stabilized Y zeolite.

    摘要翻译: 一种用于处理含分子筛的烷基化催化剂以增加其对单烷基化的选择性的方法,其中烷基化催化剂与包含至少一种有机化合物的原料接触,条件是使足够量的碳质材料均匀地沉积在烷基化催化剂上 基本上抑制其烷基化活性。 然后使含碳催化剂颗粒在升高的温度下与气态氧化剂接触使其燃烧,以除去至少一部分含碳材料,优选基本上所有的碳质材料,从而提高催化剂对于 单相相关至少约1.0个百分点。 所得的烷基化催化剂可用于用乙烯,丙烯或其它烯烃烷基化苯和其它芳族化合物,以产生高产率的乙苯,枯烯和其它烷基化产物。 优选地,烷基化催化剂含有铵交换和蒸汽稳定的Y沸石。