Production of dialkylbenzenes
    3.
    发明授权
    Production of dialkylbenzenes 有权
    生产二烷基苯

    公开(公告)号:US07361798B2

    公开(公告)日:2008-04-22

    申请号:US10946553

    申请日:2004-09-21

    IPC分类号: C07C5/22 C07C1/20

    摘要: The invention relates to a process for producing a desired dialkylbenzene isomer having a formula R2C6H4, where R is an alkyl substituent, by contacting a polyalkylbenzene compound of formula RnC6H6-n, where n is an integer between 2 and 4, with a monoalkylbenzene compound of formula RC6H5 in the presence of a molecular sieve catalyst under reaction conditions sufficient to produce said dialkybenzene isomer. The preferred molecular sieve catalysts have pores or surface cavities greater than 5.6 Angstroms in diameter and/or an X-ray diffraction pattern including d-spacing maxima at 12.4±0.25, 6.9±0.15, 3.57±0.07, and 3.42±0.07 Angstrom.

    摘要翻译: 本发明涉及制备具有式R 2 C 6 H 4 H 4的所需二烷基苯异构体的方法,其中R是烷基取代基, 通过使式R n 6 C 6 H 6-n N的多烷基苯化合物(其中n是2和4之间的整数)与单烷基苯 在分子筛催化剂存在下,在足以产生所述二烷基苯异构体的反应条件下,式RC 6 H 5 H 5的化合物。 优选的分子筛催化剂具有直径大于5.6埃的孔或表面空腔和/或包括在12.4±0.25,6.9±0.15,3.57±0.07和3.42±0.07埃处的d间距最大值的X射线衍射图。

    Process for producing phenol and methyl ethyl ketone
    9.
    发明授权
    Process for producing phenol and methyl ethyl ketone 失效
    苯酚和甲基乙基酮的制备方法

    公开(公告)号:US07834218B2

    公开(公告)日:2010-11-16

    申请号:US12162970

    申请日:2007-02-08

    IPC分类号: C07C45/53 C07C37/08

    摘要: A process for producing phenol and methyl ethyl ketone comprises contacting benzene and a C4 alkylating agent under alkylation conditions and in the presence of an alkylation catalyst comprising at least one molecular sieve of the MCM-22 family to produce an alkylation effluent comprising secbutylbenzene; wherein the contacting is conducted in a plurality of reaction zones and the C4 alkylating agent secbutylbenzene fraction is recovered from the alkylation effluent and comprises at least 95 wt % sec-butylbenzene, less than 100 wt ppm of C8+ olefins, and less than 0.5 wt % of isobutylbenzene and tert-butylbenzene. The sec-butylbenzene fraction is then oxidized to produce sec-butylbenzene hydroperoxide and the hydroperoxide is cleaved to produce phenol and methyl ethyl ketene.

    摘要翻译: 一种生产苯酚和甲基乙基酮的方法包括在烷基化条件下和在包含至少一种MCM-22族分子筛的烷基化催化剂的存在下使苯和C4烷基化剂接触以产生包含二丁基苯的烷基化流出物; 其中所述接触在多个反应区中进行,并且所述C4烷基化剂仲丁苯部分从烷基化流出物中回收,并且包含至少95重量%的仲丁基苯,小于100重量ppm的C 8+烯烃和小于0.5重量% 的异丁基苯和叔丁基苯。 然后将仲丁基馏分氧化以产生仲丁基苯氢过氧化物,并将氢过氧化物裂解以产生苯酚和甲基乙基乙烯酮。