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    • 43. 发明申请
    • EPOXIDATION CATALYSTS CONTAINING METALS OF THE LANTHANOIDE SERIES
    • 含氧化铝系列金属的环氧化催化剂
    • WO01058887A1
    • 2001-08-16
    • PCT/EP2001/000810
    • 2001-01-25
    • B01J23/52B01J23/66B01J35/02C07B61/00C07D301/06C07D301/10C07D303/04
    • B01J23/66B01J23/52C07D301/06C07D301/10
    • The invention is directed towards a process for the epoxidation of olefins, using molecular oxygen and hydrogen, characterized in that, as catalyst, a compound comprising gold, preferably in nanometer size, on a support material, in which the support material contain one or more element(s) from the lanthanoide series is applied, and a compound comprising gold, preferably in nanometer size, on a support material, in which the support material contain one or more element(s) selected from the group consisting of the metals having the atomic number 58-71 of which Cerium and Neodymium are excluded, a process for the preparation of said compounds and a method of catalyzing a chemical reaction comprising conducting said chemical reaction in the presence of said compound.
    • 本发明涉及一种使用分子氧和氢气进行烯烃环氧化的方法,其特征在于,作为催化剂,包含金,优选纳米尺寸的化合物在载体材料上,其中载体材料含有一种或多种 应用来自镧系元素的元素,以及包含金,优选纳米尺寸的金属在载体材料上的化合物,其中载体材料含有一种或多种元素,所述元素选自具有 其中不包括铈和钕的原子序数58-71,制备所述化合物的方法和催化化学反应的方法,包括在所述化合物存在下进行所述化学反应。
    • 45. 发明申请
    • EPOXIDATION PROCESS USING SERIALLY CONNECTED CASCADE OF FIXED BED REACTORS
    • 使用固定床反应器的连续连接的环氧化物过程
    • WO99032472A1
    • 1999-07-01
    • PCT/EP1998/006059
    • 1998-09-23
    • C07D301/14C07D301/04C07D301/06C07D301/12C07D301/19
    • C07D301/19C07D301/06C07D301/12Y02P20/584
    • An olefin epoxidation process is operated using a plurality of reactor vessels, each containing a fixed bed of a heterogenous catalyst such as titania-on-silica. The reactor vessels are connected in series whereby a feedstream comprised of olefin and an active oxygen species is passed through said series of reactor vessels in contact with the heterogenous catalyst to accomplish conversion of the olefin to the corresponding epoxide. As the activity of the catalyst in an individual reactor vessel falls to an undesirably low level, said reactor vessel is taken out of service and a replacement reactor containing fresh or regenerated catalyst introduced. The replacement reactor vessel may, in alternative embodiments of the process, be the first or the last reactor vessel in said series. For example, the feedstream may first be contacted with either the most active or the least active charge of catalyst within the series of reactor vessels. Although the latter embodiment permits somewhat longer catalyst life, the former embodiment requires much smaller capacity heat exchangers. The process of this invention considerably reduces catalyst usage as compared to a conventional fixed bed epoxidation process where all of the catalyst is replaced or regenerated at the same time.
    • 烯烃环氧化方法使用多个反应器容器进行操作,每个反应器容器包含诸如二氧化钛上的异质催化剂的固定床。 反应器容器串联连接,由烯烃和活性氧组成的原料流通过与异质催化剂接触的所述一系列反应器容器,以实现烯烃转化为相应的环氧化物。 由于催化剂在单个反应器容器中的活性降低到不期望的低水平,所以反应器容器停止使用并且引入了含有新鲜或再生催化剂的置换反应器。 在该方法的替代实施方案中,置换反应器容器可以是所述系列中的第一个或最后一个反应器容器。 例如,原料流可首先与一系列反应器容器内的最有活性或最不活泼的催化剂装置接触。 尽管后一个实施例允许稍长的催化剂寿命,但前一实施例要求更小容量的热交换器。 与传统的固定床环氧化方法相比,本发明的方法显着地减少了催化剂的使用,其中所有的催化剂都被同时更换或再生。
    • 48. 发明申请
    • TWO-STAGE, GAS PHASE PROCESS FOR THE MANUFACTURE OF ALKYLENE GLYCOL
    • 两阶段气相法制备亚乙基二醇
    • WO2010017052A3
    • 2010-05-20
    • PCT/US2009051830
    • 2009-07-27
    • DOW TECHNOLOGY INVESTMENTS LLCNORONHA JOHN CCAMPBELL E JOSEPHKEEN BRIAN TNAGAKI DICK ASOO HWAILISPEARS DAVID ASZUL JOHN F
    • NORONHA JOHN CCAMPBELL E JOSEPHKEEN BRIAN TNAGAKI DICK ASOO HWAILISPEARS DAVID ASZUL JOHN F
    • C07C29/16C07C31/20
    • C07C29/106C07D301/06C07C31/202
    • A two-stage, gas phase process for manufacturing alkylene glycol (e.g., ethylene glycol) from an alkene (e.g., ethylene), oxygen and water, the process comprising the steps of: (A) Contacting under gas phase, oxidation conditions gaseous alkene and oxygen over a heterogeneous oxidation catalyst to produce a gaseous oxidation product comprising alkylene oxide, water and unreacted alkene; (B) Contacting under gas phase, hydrolysis conditions the gaseous oxidation product of (A) with added water over a heterogeneous hydrolysis catalyst to produce a gaseous alkylene glycol and unreacted alkene; and (C) Recycling the unreacted alkene of (B) to (A). The hydrolysis catalyst is selected from the group consisting of hydrotalcites, metal-loaded zeolites, phosphates, and metal-loaded ion-exchanged molecular sieves. The process improves over the conventional two-stage process by the elimination of steps and equipment to recover and refine alkylene oxide, the use of less water in the hydrolysis reaction, and the elimination of the entire evaporation train used in the recovery of alkylene glycol.
    • 用于由烯烃(例如乙烯),氧气和水制造亚烷基二醇(例如乙二醇)的两阶段气相方法,所述方法包括以下步骤:(A)在气相下接触,氧化条件为气态烯烃 和氧在非均相氧化催化剂上反应以产生包含氧化烯,水和未反应的烯烃的气态氧化产物; (B)在气相条件下接触,(A)的气态氧化产物与加入的水在非均相水解催化剂上进行水解以产生气态的亚烷基二醇和未反应的烯烃; (C)将(B)的未反应烯烃再循环至(A)。 水解催化剂选自水滑石,载有金属的沸石,磷酸盐和载有金属的离子交换分子筛。 该方法改进了传统的两步法,其中通过消除用于回收和精炼烯化氧的步骤和设备,在水解反应中使用更少的水以及消除用于回收亚烷基二醇的整个蒸发列。