利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

8 条记录 (耗时 0.011 秒)

    CALCINATION PROCESS FOR PRODUCING AN IMPROVED ETHYLENE OXIDE CATALYST
    1.
    发明公开
    CALCINATION PROCESS FOR PRODUCING AN IMPROVED ETHYLENE OXIDE CATALYST 审中-公开
    CALCINIERUNGSVERFAHREN ZUR HERSTELLUNG EINES VERBESSERTEN ETHYLENOXIDKATALYSATORS

    公开(公告)号：EP2938435A1

    公开(公告)日：2015-11-04

    申请号：EP13869488.0

    申请日：2013-12-26

    申请人： Scientific Design Company Inc.

    发明人： PAK, Serguei

    IPC分类号： B01J37/08 ,  B01J23/50

    CPC分类号： B01J23/688 ,  B01J21/04 ,  B01J23/50 ,  B01J23/66 ,  B01J37/0203 ,  B01J37/0213 ,  B01J37/08 ,  B01J37/18 ,  C07D301/10 ,  Y02P20/52

    摘要： A method for producing a catalyst effective in the oxidative conversion of ethylene to ethylene oxide, the method comprising subjecting a refractory carrier impregnated with a liquid silver-containing solution to a calcination process, wherein the calcination process comprises a solvent removal step in which the silver-impregnated carrier is heated to a base temperature (Tbase) of at least 80° C. and up to about 200° C. to produce a dry carrier impregnated with ionic silver, followed by a silver reduction step in which the dry carrier is gradually heated above the base temperature to a maximum temperature (Tmax) of at least 350° C. and up to about 500° C. and then gradually cooled to the base temperature, wherein the method is conducted such that (Tbase−Tmax)×HW is at least 2000 min.° C. wherein HW is a full width at half maximum of a temperature versus time curve delineated by the silver reduction step.

    摘要翻译： 一种制备有效地将乙烯氧化成环氧乙烷的催化剂的方法，该方法包括使浸渍有含银液体的溶液的耐火材料载体进行煅烧过程，其中所述煅烧过程包括溶剂除去步骤，其中所述银 将浸渍载体加热到至少80℃和高达约200℃的基础温度（Tbase），以产生用离子银浸渍的干燥载体，随后进行银还原步骤，其中干燥载体逐渐 在基础温度以上加热至最高温度（Tmax）至少350℃，最高约500℃，然后逐渐冷却至基本温度，其中进行该方法使得（Tbase-Tmax）×HW 是至少2000分钟。其中HW是通过银还原步骤描绘的温度对时间曲线的半峰全宽。

    START-UP PROCESS FOR HIGH SELECTIVITY ETHYLENE OXIDE CATALYSTS
    5.
    发明公开
    START-UP PROCESS FOR HIGH SELECTIVITY ETHYLENE OXIDE CATALYSTS 审中-公开
    START PROCESS FOR高选择性环氧乙烷催化剂

    公开(公告)号：EP2920159A1

    公开(公告)日：2015-09-23

    申请号：EP13867735.6

    申请日：2013-12-23

    申请人： Scientific Design Company Inc.

    发明人： PAK, Serguei

    IPC分类号： C07D301/04 ,  C07D301/08

    CPC分类号： C07D301/10

    摘要： A high selectivity catalyst start-up process is provided in which an excess level of chloride moderator (greater than 1 ppm) is present in the feed gas composition during each of the various stages of the start-up process. The excess level of chloride used in the start-up process maintains a low level of selectivity (less than 86 %) during the entire start-up process. Despite the low selectivity values achieved during the start-up process of the present disclosure, high selectivity catalysts that are conditioned by such a start-up process exhibit improved catalyst performance during the normal operation of the catalyst.