知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

172 records (took 0.02 seconds)

    PROCESS FOR EPOXIDATION START-UP
    83.
    发明申请
    PROCESS FOR EPOXIDATION START-UP 有权
    环氧化开始的过程

    公开(公告)号：US20110152548A1

    公开(公告)日：2011-06-23

    申请号：US12970392

    申请日：2010-12-16

    Applicant: Howard Sachs ,  Andrzej Rokicki

    Inventor： Howard Sachs ,  Andrzej Rokicki

    IPC: C07D301/08

    CPC classification number: C07D301/08

    Abstract: A method for the start-up of a process for the epoxidation of ethylene comprising: initiating an epoxidation reaction by reacting a feed gas composition containing ethylene, and oxygen, in the presence of an epoxidation catalyst at a temperature of about 180° C. to about 210° C.; adding to the feed gas composition about 0.05 ppm to about 2 ppm of moderator; increasing the first temperature to a second temperature of about 240° C. to about 250° C., over a time period of about 12 hours to about 60 hours; and maintaining the second temperature for a time period of about 50 hours to about 150 hours.

    Abstract translation: 一种启动乙烯环氧化方法的方法，包括：在环氧化催化剂存在下，在约180℃至约180℃的温度下使包含乙烯的进料气体组合物与氧反应引发环氧化反应， 约210°C。 加入进料气体组合物约0.05ppm至约2ppm的缓和剂; 在约12小时至约60小时的时间段内将第一温度升高至约240℃至约250℃的第二温度; 并将第二温度保持约50小时至约150小时。

    Calcination in an inert gas in the presence of a small concentration of an oxidizing component
    84.
    发明授权
    Calcination in an inert gas in the presence of a small concentration of an oxidizing component 有权
    在惰性气体中在少量氧化组分存在下煅烧

    公开(公告)号：US07759284B2

    公开(公告)日：2010-07-20

    申请号：US11124646

    申请日：2005-05-09

    Applicant: Serguei Pak ,  Andrzej Rokicki

    Inventor： Serguei Pak ,  Andrzej Rokicki

    IPC: B01J23/00 ,  B01J21/00 ,  B01J20/00

    CPC classification number: C07D301/10 ,  B01J23/66 ,  B01J23/683 ,  B01J23/688 ,  B01J37/0203 ,  B01J37/08 ,  B01J37/14 ,  Y02P20/52

    Abstract: This invention relates to an improved process for preparing silver catalysts useful for the vapor phase production of ethylene oxide from ethylene and oxygen. An inert support is impregnated with a solution of a catalytically effective amount of a silver containing compound, a promoting amount of an alkali metal containing compound, and a promoting amount of a transition metal containing compound. The impregnated support is calcined by heating at a temperature of from about 200° C. to about 600° C. to convert the silver in the silver containing compound to metallic silver and to decompose and remove substantially all organic materials. The heating is conducted under an atmosphere comprising a combination of an inert gas and from about 10 ppm to about 5% by volume of a gas of an oxygen containing oxidizing component.

    Abstract translation: 本发明涉及一种制备用于从乙烯和氧气气相生产环氧乙烷的银催化剂的改进方法。 用催化有效量的含银化合物，促进量的含碱金属的化合物和促进量的含过渡金属的化合物的溶液浸渍惰性载体。 浸渍的载体通过在约200℃至约600℃的温度下加热煅烧，以将含银化合物中的银转化成金属银，并分解和除去基本上所有的有机材料。 加热在包括惰性气体和约10ppm至约5体积％的含氧氧化组分的气体的组合的气氛下进行。

    Phosphorus/vanadium catalyst preparation
    87.
    发明授权
    Phosphorus/vanadium catalyst preparation 失效
    磷/钒催化剂制备

    公开(公告)号：US5922637A

    公开(公告)日：1999-07-13

    申请号：US4886

    申请日：1998-01-09

    Applicant: Arie Bortinger

    Inventor： Arie Bortinger

    IPC: B01J20060101 ,  B01J27/198 ,  B01J27/199

    CPC classification number: B01J23/002 ,  B01J27/198 ,  B01J27/199 ,  B01J2523/00

    Abstract: The invention provides an improved method for the production of vanadium/phosphorous mixed oxide catalysts, a vanadium +5 solid compound first being digested in an organic solvent at anhydrous conditions, water then being added and the resulting aqueous mixture containing suspended solid vanadium compound being digested to form the catalyst precursor.

    Abstract translation: 本发明提供了一种用于生产钒/磷混合氧化物催化剂的改进方法，钒+5固体化合物首先在有机溶剂中在无水条件下消化，然后加入水，并将所得含有悬浮固体钒化合物的含水混合物消化 以形成催化剂前体。

    Promoted silver catalyst
    89.
    发明授权
    Promoted silver catalyst 失效
    促进银催化剂

    公开(公告)号：US5703001A

    公开(公告)日：1997-12-30

    申请号：US738042

    申请日：1996-10-25

    Applicant: Nabil Rizkalla

    Inventor： Nabil Rizkalla

    IPC: B01J23/50 ,  B01J23/66 ,  B01J27/02 ,  B01J27/12 ,  C07D301/10

    CPC classification number: C07D301/10 ,  B01J23/66

    Abstract: A rhenium free supported silver catalyst for ethylene oxidation to ethylene oxide is provided containing an alkali metal promoter component and a Group 4b component in which the Group 4b component is added as a compound where the Group 4b compound is the cation.

    Abstract translation: 提供了一种用于乙烯氧化成环氧乙烷的无铼载体的银催化剂，其含有碱金属助催化剂组分和4b族组分，其中4b族组分作为其中第4b族化合物为阳离子的化合物。

Patent Agency Ranking