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    METHOD FOR STARTING A GAS PHASE OXIDATION REACTOR THAT CONTAINS A CATALYTICALLY ACTIVE SILVER-VANADIUM OXIDE BRONZE
    8.
    发明申请
    METHOD FOR STARTING A GAS PHASE OXIDATION REACTOR THAT CONTAINS A CATALYTICALLY ACTIVE SILVER-VANADIUM OXIDE BRONZE 审中-公开
    启动含有催化活性银 - 氧化钒的气相氧化反应器的方法

    公开(公告)号：US20110028740A1

    公开(公告)日：2011-02-03

    申请号：US12936648

    申请日：2009-04-07

    申请人： Cornelia Dobner ,  Ulf Dietrich ,  Thomas Mackewitz ,  Sebastian Storck ,  Hagen Wilmer ,  Frank Rosowski ,  Andreas Tenten

    发明人： Cornelia Dobner ,  Ulf Dietrich ,  Thomas Mackewitz ,  Sebastian Storck ,  Hagen Wilmer ,  Frank Rosowski ,  Andreas Tenten

    IPC分类号： C07D307/89 ,  C07D307/36 ,  C07C51/347 ,  C07C63/00 ,  C07C63/04

    CPC分类号： C07C51/265 ,  C07C63/16

    摘要： What is described is a method for starting a gas phase oxidation reactor that contains a bed of a first catalyst whose active material comprises a catalytically active silver-vanadium oxide bronze, and at least one bed of a second catalyst whose catalytically active material comprises vanadium pentoxide and titanium dioxide, and whose temperature is controllable by means of a heat transfer medium. In the operating state, a gas stream which comprises a loading cop of a hydrocarbon and molecular oxygen is passed through the reactor over the bed of the first and second catalyst at a temperature Top of the heat transfer medium. For the startup, a) a gas stream is passed through the reactor with a starting loading c0 which is less than cop, and at a starting temperature T0 of the heat transfer medium which is less than Top, and b) the temperature of the heat transfer medium is brought to Top and the loading of the gas stream to cop. The process combines a short startup time without exceedance of emissions or quality requirements, long catalyst lifetime, high yield and low formation of by-products.

    摘要翻译： 描述的是一种起始气相氧化反应器的方法，该反应器含有一种第一催化剂床，其活性物质包含催化活性的银 - 钒氧化物青铜，以及至少一个第二催化剂床，其催化活性物质包含五氧化二钒 和二氧化钛，其温度可通过传热介质控制。 在操作状态下，在传热介质的温度Top下，将包含烃和分子氧的负载管的气流在第一和第二催化剂的床上通过反应器。 对于启动，a）气流通过反应器，起动负载c0小于保护时间，并且传热介质的起始温度T0小于Top，b）热量的温度 转移介质被带到顶部并将气流装载到管路中。 该过程结合了启动时间短，而不会超过排放或质量要求，长催化剂寿命，高产率和低副产物形成。

    Catalyst-precursor for the production of maleic acid anhydride and method for the production thereof
    10.
    发明申请
    Catalyst-precursor for the production of maleic acid anhydride and method for the production thereof 有权
    用于生产马来酸酐的催化剂前体及其制备方法

    公开(公告)号：US20050222436A1

    公开(公告)日：2005-10-06

    申请号：US10507610

    申请日：2003-03-12

    申请人： Jens Weiguny ,  Sebastian Storck ,  Mark Duda ,  Cornelia Dobner

    发明人： Jens Weiguny ,  Sebastian Storck ,  Mark Duda ,  Cornelia Dobner

    IPC分类号： C07D307/60 ,  B01J27/198 ,  B01J35/00 ,  B01J35/02 ,  B01J35/10 ,  B01J37/00 ,  B01J37/03 ,  B01J37/08 ,  C07B61/00 ,  C07C51/215 ,  C07C51/25 ,  C07D307/34

    CPC分类号： C07C51/252 ,  B01J23/002 ,  B01J27/198 ,  B01J35/002 ,  B01J35/1014 ,  B01J37/0018 ,  B01J37/031 ,  B01J2523/00 ,  C07C51/215 ,  C07C57/145 ,  B01J2523/51 ,  B01J2523/55

    摘要： A process for preparing a vanadium, phosphorus, and oxygen catalyst precursor for preparing maleic anhydride by heterogeneously catalyzed gas-phase oxidation of a hydrocarbon having at least four carbon atoms, which comprises (a) reacting vanadium pentoxide with from 102 to 110% strength phosphoric acid in the presence of a primary or secondary, noncyclic or cyclic, unbranched or branched, saturated alcohol having from 3 to 6 carbon atoms in a temperature range from 80 to 160° C.; (b) isolating the precipitate formed; (c) setting an organic carbon content of ≦1.1% by weight in the isolated precipitate by heat treatment in a temperature range from 250 to 350° C., the heat-treated product, following the addition of 3.0% by weight of graphite, giving a powder X-ray diffraction diagram which in the 2θ region features a ratio of the height of the peak of any pyrophosphate phase present at 28.5° to the height of the peak due to the graphite at 26.6° of ≦0.1; and (d) shaping the heat-treated product obtained from step (c) into particles having an averaged diameter of at least 2 mm; a catalyst precursor obtainable from this process; a process for preparing a catalyst from the catalyst precursor; a catalyst obtainable from that process; and also a process for preparing maleic anhydride over that catalyst.

    摘要翻译： 一种制备用于通过异构催化气相氧化具有至少四个碳原子的烃来制备马来酸酐的钒，磷和氧催化剂前体的方法，其包括（a）使五氧化二钒与102-110％强度的磷酸 在80至160℃的温度范围内在具有3至6个碳原子的伯或仲，非环或环状，无支链或支链的饱和醇存在下进行酸反应。 （b）分离形成的沉淀物; （c）通过在250-350℃的温度范围内通过热处理将分离的沉淀物中的有机碳含量<= 1.1重量％设定为热处理产物，添加3.0重量％的石墨 ，给出粉末X射线衍射图，其在2θ区域的特征是存在于28.5°的任何焦磷酸盐相的峰的高度与由于石灰在26.6°<= 0.1处的峰的高度之比; 和（d）将由步骤（c）获得的热处理产物成型为具有至少2mm的平均直径的颗粒; 从该方法获得的催化剂前体; 从催化剂前体制备催化剂的方法; 可从该方法获得的催化剂; 以及在该催化剂上制备马来酸酐的方法。