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    Process for oxidizing alkylaromatic compounds
    4.
    发明申请
    Process for oxidizing alkylaromatic compounds 有权
    氧化烷基芳族化合物的方法

    公开(公告)号：US20080033217A1

    公开(公告)日：2008-02-07

    申请号：US11827952

    申请日：2007-07-13

    Applicant: Jihad Mohammed Dakka ,  Doron Levin ,  John Scott Buchanan ,  Jon Edmond Randolph Stanat

    Inventor： Jihad Mohammed Dakka ,  Doron Levin ,  John Scott Buchanan ,  Jon Edmond Randolph Stanat

    IPC: C07C37/08

    CPC classification number: C07C409/08 ,  C07C37/08 ,  C07C45/53 ,  C07C407/00 ,  C07C409/14 ,  C07C2601/14 ,  Y02P20/52 ,  C07C49/10 ,  C07C49/04 ,  C07C49/403 ,  C07C39/04

    Abstract: In a process for oxidizing alkylaromatic compounds to the corresponding hydroperoxide, an alkylaromatic compound of general formula (I): in which R1 and R2 each independently represents an alkyl group having from 1 to 4 carbon atoms, provided that R1 and R2 may be joined to form a cyclic group having from 4 to 10 carbon atoms, said cyclic group being optionally substituted, and R3 represents hydrogen, one or more alkyl groups having from 1 to 4 carbon atoms or a cyclohexyl group, is contacted with oxygen in the presence of an added catalyst comprising tert-butyl hydroperoxide and in the absence of any other catalyst, to produce a hydroperoxide of general formula (II): in which R1, R2 and R3 have the same meaning as in formula (I). The hydroperoxide may then be converted into a phenol and a ketone of the general formula R1COCH2R2 (III), in which R1 and R2 have the same meaning as in formula (I).

    Abstract translation: 在将烷基芳族化合物氧化成相应的氢过氧化物的方法中，通式（I）的烷基芳族化合物：其中R 1和R 2各自独立地表示具有 如果R 1和R 2可以连接形成具有4至10个碳原子的环状基团，则所述环状基团任选被取代 ，R 3表示氢，一个或多个具有1至4个碳原子的烷基或环己基与氧在含叔丁基过氧化氢的加成催化剂存在下与氧接触， 不存在任何其它催化剂，以产生通式（II）的氢过氧化物：其中R 1，R 2和R 3 3具有 与式（I）中相同的含义。 然后将氢过氧化物转化成通式为R 1，R 2，R 2，（III）的苯酚和酮，其中R ＆lt; SUP＆gt;和＆lt; 2＆gt;具有与式（I）中相同的含义。

    Production of Para-Xylene by the Methylation of Benzene and/or Toluene
    7.
    发明申请
    Production of Para-Xylene by the Methylation of Benzene and/or Toluene 有权
    通过苯和/或甲苯的甲基化生产对二甲苯

    公开(公告)号：US20110092755A1

    公开(公告)日：2011-04-21

    申请号：US12894778

    申请日：2010-09-30

    Applicant: James R. Lattner ,  Mark P. Hagemeister ,  Jon Edmond Randolph Stanat ,  John Di-Yi Ou ,  Xiaobo Zheng ,  Lu Han

    Inventor： James R. Lattner ,  Mark P. Hagemeister ,  Jon Edmond Randolph Stanat ,  John Di-Yi Ou ,  Xiaobo Zheng ,  Lu Han

    IPC: C07C15/08

    CPC classification number: C07C2/864 ,  C07C2529/40 ,  Y02P20/52 ,  C07C15/08

    Abstract: In a process for the production of para-xylene, methanol is preheated to a first temperature, an aromatic feedstock comprising toluene and/or benzene is preheated to a second temperature and the preheated methanol and aromatic feedstocks are fed to a reactor at a first methanol to aromatic feedstock molar ratio. The preheated aromatic feedstock is contacted with the preheated methanol under alkylation conditions in the reactor in the presence of a catalyst so that the methanol reacts with the aromatic feedstock to produce an effluent comprising para-xylene. During the reaction, a temperature is measured within the reactor and is compared with a predetermined optimal temperature. The methanol to aromatic feedstock molar ratio is then adjusted in a manner to reduce any difference between the measured and predetermined optimal temperatures in the reactor.

    Abstract translation: 在制备对二甲苯的方法中，将甲醇预热至第一温度，将包含甲苯和/或苯的芳族原料预热至第二温度，并将预热的甲醇和芳族原料以第一个甲醇 与芳烃原料摩尔比。 预热的芳族原料在催化剂存在下在反应器中在烷基化条件下与预热的甲醇接触，使得甲醇与芳族原料反应以产生包含对二甲苯的流出物。 在反应期间，在反应器内测量温度并与预定的最佳温度进行比较。 然后以降低反应器中测量的和预定的最佳温度之间的任何差异的方式调节甲醇与芳族原料的摩尔比。

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