Method for isomerizing halogenated aromatics
    1.
    发明授权
    Method for isomerizing halogenated aromatics 有权
    异构化卤代芳烃的方法

    公开(公告)号:US06781021B2

    公开(公告)日:2004-08-24

    申请号:US10010561

    申请日:2001-11-08

    IPC分类号: C07C1700

    摘要: A catalyst composition with a high halogenated aromatics isomerization activity, a halogenated aromatic isomerization method using said catalyst composition, and a halogenated aromatics isomerization method capable of prolonging the life or regeneration period of the catalyst. The invention also includes a catalyst composition characterized in that the maximum diameter of secondary particles of the zeolite in the formed catalyst is 5 microns or less is used to improve the halogenated aromatics isomerization activity. Furthermore, if dissolved oxygen is decreased, the life or regeneration period of the catalyst can be prolonged.

    摘要翻译: 具有高卤化芳烃异构化活性的催化剂组合物,使用所述催化剂组合物的卤代芳族异构化方法和能够延长催化剂寿命或再生期的卤代芳烃异构化方法。 本发明还包括一种催化剂组合物,其特征在于所形成的催化剂中沸石的二次颗粒的最大直径为5微米或更小,用于改善卤代芳烃异构化活性。 此外,如果溶解氧降低,则可延长催化剂的寿命或再生时间。

    Process for production of xylene
    4.
    发明授权
    Process for production of xylene 有权
    二甲苯生产工艺

    公开(公告)号:US06359184B1

    公开(公告)日:2002-03-19

    申请号:US09487538

    申请日:2000-01-19

    IPC分类号: C07C600

    摘要: Disclosed herein is a catalyst composition for transalkylation of alkylaromatic hydrocarbons which exhibits the percent conversion of ethyltoluene higher than 50 wt %, is composed of mordenite (100 pbw), inorganic oxide and/or clay (25-150 pbw), and at least one metal component of rhenium, platinum, and nickel, and contains mordenite such that the maximum diameter of secondary particles of mordenite is smaller than 10 &mgr;m. Disclosed also herein is a process for producing xylene by the aid of said catalyst from alkylaromatic hydrocarbons containing C9 alkylaromatic hydrocarbons containing more than 5 wt % ethyltoluene and less than 0.5 wt % naphthalene, in the presence of hydrogen.

    摘要翻译: 本文公开了烷基芳族烃的烷基转移催化剂组合物,其表现出高于50重量%的乙基甲苯的转化百分比,由丝光沸石(100pbw),无机氧化物和/或粘土(25-150pbw)组成,并且至少一个 铼,铂和镍的金属成分,并含有丝光沸石,使得丝光沸石的二次粒子的最大直径小于10μm。 本文还公开了在氢气存在下,借助于所述催化剂从含有大于5重量%乙基甲苯和小于0.5重量%萘的C 9烷基芳族烃的烷基芳烃生产二甲苯的方法。

    Process for isomerizing trichlorobenzene
    8.
    发明授权
    Process for isomerizing trichlorobenzene 失效
    异柠檬酸异构化方法

    公开(公告)号:US5180862A

    公开(公告)日:1993-01-19

    申请号:US753929

    申请日:1991-09-03

    CPC分类号: C07C17/358

    摘要: A process for isomerizing trichlorobenzene is disclosed. In the process of the present invention, a mixture of trichlorobenzene isomers containing 1,3,5-trichlorobenzene and/or 1,2,3-trichlorobenzene in small concentrations is contacted with a catalyst including acid type mordenite zeolite or acid type beta zeolite and a rhenium component and/or silver component in liquid phase in the presence of hydrogen, thereby increasing concentrations of 1,3,5-trichlorobenzene and/or 1,2,3-trichlorobenzene in said mixture.

    摘要翻译: 公开了一种异构化三氯苯的方法。 在本发明的方法中,将含有少量浓度的1,3,5-三氯苯和/或1,2,3-三氯苯的三氯苯异构体的混合物与包括酸式丝光沸石或酸式β沸石的催化剂接触, 铼组分和/或银组分,在氢气存在下为液相,从而增加所述混合物中1,3,5-三氯苯和/或1,2,3-三氯苯的浓度。