Fluoride-modified zeolite catalyst
    10.
    发明授权
    Fluoride-modified zeolite catalyst 有权
    氟化改性沸石催化剂

    公开(公告)号:US07446069B2

    公开(公告)日:2008-11-04

    申请号:US11407822

    申请日:2006-04-20

    IPC分类号: B01J29/06

    摘要: A method of modifying a ZSM-5-type zeolite catalyst to increase selectivity of the catalyst for para-isomers in aromatic alkylation reactions is provided. The method includes contacting a ZSM-5-type zeolite catalyst with a fluoride-containing compound. The fluoride-containing zeolite catalyst can be used in aromatic alkylation to provide di-alkyl aromatic products. A method of preparing a xylene product is also accomplished by providing a fluoride-treated ZSM-5-type zeolite catalyst within a reactor. The fluoride-treated ZSM-5 zeolite catalyst is contacted with a toluene/methanol feed under reaction conditions conditions suitable for toluene methylation to form a xylene product containing at least 50% para-xylene by total mixed xylenes.

    摘要翻译: 提供了一种修饰ZSM-5型沸石催化剂以提高芳族烷基化反应中对位异构体催化剂选择性的方法。 该方法包括使ZSM-5型沸石催化剂与含氟化合物接触。 含氟化物的沸石催化剂可用于芳族烷基化以提供二烷基芳族产物。 制备二甲苯产物的方法也可以通过在反应器内提供氟化物处理的ZSM-5型沸石催化剂来实现。 氟化物处理的ZSM-5沸石催化剂在适用于甲苯甲基化的反应条件条件下与甲苯/甲醇进料接触以形成通过总混合二甲苯含有至少50%对二甲苯的二甲苯产物。