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    Integrated process for the preparation of phenol from benzene with recycling of the by-products
    12.
    发明授权
    Integrated process for the preparation of phenol from benzene with recycling of the by-products 有权
    从苯中制备苯酚的副产物回收综合工艺

    公开(公告)号：US07038093B2

    公开(公告)日：2006-05-02

    申请号：US10716460

    申请日：2003-11-20

    Applicant: Daniele Bianchi ,  Rossella Bortolo ,  Roberto Buzzoni ,  Alberto Cesana ,  Leonardo Dalloro ,  Rino D'Aloisio

    Inventor： Daniele Bianchi ,  Rossella Bortolo ,  Roberto Buzzoni ,  Alberto Cesana ,  Leonardo Dalloro ,  Rino D'Aloisio

    IPC: C07C37/00

    CPC classification number: C07C37/60 ,  B01J29/89 ,  B01J2229/30 ,  Y02P20/125 ,  Y02P20/52 ,  C07C39/04

    Abstract: The invention relates to a process for the preparation of phenol comprising the following phases: 1) preparation in continuous of phenol by means of the direct oxidation of benzene with hydrogen peroxide operating with an H2O2/benzene ratio ranging from 10 to 70%, in a three-phase reaction system comprising a first liquid phase consisting of benzene and an organic solvent, a second liquid phase consisting of water, a solid phase consisting of an activated catalyst based on titanium silicalite TS-1; 2) separation of the phenol and non-reacted benzene from the reaction mixture of the oxidation section (1), by means of fractionated distillation; 3) separation of the solvent and by-products from the mixture coming from the distillation tail (2), by means of basic extraction; 4) transformation of the by-products obtain in section (3) to phenol by means of hydrodeoxygenation with hydrogen operating in continuous, in aqueous solution, at a temperature ranging from 250 to 500° C., at pressures of 1-100 bar and in the presence of a catalyst based on elements of group VIB or their mixtures or group VIII of the periodic table or their mixtures; 5) recycling of the phenol obtained in section (4) to the distillation section (2).

    Abstract translation: 本发明涉及一种制备苯酚的方法，包括以下阶段：1）通过苯与氧化氢的直接氧化制备苯酚连续操作，所述过氧化氢用H 2 O 2 在含有由苯和有机溶剂组成的第一液相的三相反应体系中，第二液相由水组成，固相由活化的 基于钛硅沸石TS-1的催化剂; 2）通过分级蒸馏从氧化段（1）的反应混合物中分离苯酚和未反应的苯; 3）通过碱性萃取法从蒸馏尾料（2）中分离出溶剂和副产物与混合物; 4）将第（3）部分获得的副产物转化为苯酚，通过加氢脱氧，氢气在连续的水溶液中，在250-500℃的温度，1-100巴的压力和 在基于元素周期表VIB族元素或它们的混合物或VIII族元素或其混合物的催化剂的存在下; 5）将第（4）节中得到的酚再循环至蒸馏段（2）。

    Process for the preparation of olefinic epoxides
    19.
    发明授权
    Process for the preparation of olefinic epoxides 有权
    烯烃环氧化物的制备方法

    公开(公告)号：US6103915A

    公开(公告)日：2000-08-15

    申请号：US222875

    申请日：1998-12-30

    Applicant: Vittorio Arca ,  Piero Furlan ,  Roberto Buzzoni

    Inventor： Vittorio Arca ,  Piero Furlan ,  Roberto Buzzoni

    IPC: B01J29/89 ,  C07D301/12 ,  C07D303/04 ,  C07D301/19

    CPC classification number: C07D301/12

    Abstract: Process for the production of epoxides by the reaction of at least one olefin and hydrogen peroxide, or a compound capable of producing hydrogen peroxide under the reaction conditions, in the presence of a catalyst consisting of titanium silicalite subjected to ion exchange treatment with metal cations (M.sup.n+) present on the catalyst in a quantity ranging from 0.01 to 1% by weight with respect to the total weight.

    Abstract translation: 在通过与金属阳离子进行离子交换处理的钛硅沸石组成的催化剂存在下，在反应条件下通过至少一种烯烃和过氧化氢或能够产生过氧化氢的化合物的反应制备环氧化物的方法（ Mn +）以相对于总重量为0.01〜1重量％的量存在于催化剂上。

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