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    • 8. 发明授权
    • Production of meta-diisopropylbenzene
    • 间二异丙基苯的生产
    • US06753453B2
    • 2004-06-22
    • US10299558
    • 2002-11-19
    • Jane Chi-Ya ChengWilliam A. WeberFrancis S. Bryan
    • Jane Chi-Ya ChengWilliam A. WeberFrancis S. Bryan
    • C07C412
    • C07C6/123C07C15/02
    • A process for the selective production of meta-diisopropylbenzene is disclosed, wherein the process comprises the steps of contacting cumene under disproportionation conditions and in the absence of added benzene with a catalyst comprising a porous crystalline inorganic oxide material having 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 to produce a disproportionation effluent containing benzene and mixture of diisopropylbenzene isomers, and then recovering from said disproportion effluent a meta-diisopropylbenzene boiling range fraction in which the ratio of meta-diisopropylbenzene to ortho-diisopropylbenzene is in excess of 50 and the total amount of meta-diisopropylbenzene co-boilers excluding ortho-diisopropylbenzene is less than 1 wt % of said fraction.
    • 公开了选择性制备间二异丙基苯的方法,其中所述方法包括以下步骤:在歧化条件下和不加入苯的情况下将异丙基苯与包含具有X射线衍射图案的多孔结晶无机氧化物材料的催化剂接触,所述多孔结晶无机氧化物材料包括 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,以产生含有苯和二异丙基苯异构体的混合物的歧化流出物,然后从所述不成比例流出物中回收间二异丙基苯沸程馏分,其中 间二异丙基苯与邻二异丙基苯的比例超过50,除邻二异丙基苯以外的间二异丙基苯共沸锅的总量小于所述馏分的1重量%。