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    Phosphorus/vanadium maleic anhydride catalyst preparation
    5.
    发明授权
    Phosphorus/vanadium maleic anhydride catalyst preparation 有权
    磷/钒马来酸酐催化剂的制备

    公开(公告)号：US6107234A

    公开(公告)日：2000-08-22

    申请号：US239651

    申请日：1999-01-29

    申请人： Arie Bortinger

    发明人： Arie Bortinger

    IPC分类号： C07D307/60 ,  B01J27/188 ,  B01J27/192 ,  B01J27/198 ,  B01J37/00 ,  B01J37/10 ,  B01J37/14 ,  C07B61/00 ,  C07C51/215 ,  B01J27/19

    CPC分类号： C07C51/215 ,  B01J23/002 ,  B01J27/188 ,  B01J27/192 ,  B01J27/198 ,  B01J37/0018 ,  B01J37/10 ,  B01J37/14 ,  B01J2523/00

    摘要： A VPO catalyst precursor having the formula (VO)HPO.sub.4 aH.sub.2 OM.sub.m P.sub.p O.sub.y wherein M is at least one promoter element selected from the group consisting of elements from Groups IA, IB, IIA, IIIA, IIIB, IVA, IVB, VA, VB, VIA, VIB, and VIIIA of the Periodic Table of the Elements, and mixtures thereof, a is a number of at least about 0.3, m is a number of from about 0 to about 0.3, p is a number of from about 0 to about 0.3, any y corresponds to the amount of oxygen necessary to satisfy the valence requirements of all elements present, is activated by heating the catalyst precursor in an atmosphere selected from the group consisting of air, steam, inert gas, and mixtures thereof to a temperature not to exceed about 300.degree. C., maintaining the catalyst precursor at this temperature and providing an atmosphere containing molecular oxygen, steam, and optionally an inert gas, increasing the temperature at a programmed rate of from about 0.5.degree. C./min to about 15.degree. C./min to a value effective to eliminate the water of hydration from the catalyst precursor, adjusting the temperature to a value greater than 350.degree. C., but less than 550.degree. C., and maintaining the adjusted temperature in a molecular oxygen/steam-containing atmosphere comprised of at least 1 vol % oxygen for a time effective to provide a vanadium oxidation state of from about +4.0 to about +4.5 and to complete transformation of the precursor to the active catalyst having the Formula (VO).sub.2 P.sub.2 O.sub.7 M.sub.2m P.sub.2p O.sub.y wherein M, m, p and y are defined above.

    摘要翻译： 具有式（VO）HPO4aH2OMmPpOy的VPO催化剂前体，其中M是至少一种选自IA，IB，IIA，IIIA，IIIB，IVA，IVB，VA，VB，VIA，VIB， 和VIIIA，及其混合物，a为至少约0.3的数，m为约0至约0.3的数，p为约0至约0.3的数，任何y 对应于满足存在的所有元素的化合价要求所需的氧的量，通过在选自空气，蒸汽，惰性气体及其混合物的气氛中加热催化剂前体而活化，其温度不超过约 在该温度下保持催化剂前体，并提供含有分子氧，蒸汽和任选的惰性气体的气氛，以约0.5℃/分钟至约15℃的编程速率升高温度。 / min到有效消除的值 从催化剂前体中取出水合水，将温度调节至大于350℃但小于550℃的温度，并将调节的温度保持在由至少1个 一氧化碳的时间有效提供约+ 4.0至约+ 4.5的钒氧化态，并完成前体转化为具有式（VO）2 P 2 O 7 M 2 mP 2 p O y的活性催化剂，其中M，m，p和y定义 以上。

    Catalytic gas-phase oxidation of propene to acrolein
    7.
    发明授权
    Catalytic gas-phase oxidation of propene to acrolein 失效
    丙烯催化气相氧化成丙烯醛

    公开(公告)号：US5821390A

    公开(公告)日：1998-10-13

    申请号：US525011

    申请日：1995-09-08

    申请人： Wilhelm Ruppel ,  Ulrike Wegerle ,  Andreas Tenten ,  Ulrich Hammon

    发明人： Wilhelm Ruppel ,  Ulrike Wegerle ,  Andreas Tenten ,  Ulrich Hammon

    IPC分类号： B01J23/88 ,  B01J8/06 ,  B01J21/02 ,  B01J23/16 ,  B01J23/887 ,  B01J27/132 ,  B01J27/192 ,  C07B61/00 ,  C07C45/35 ,  C07C47/22

    CPC分类号： B01J27/192 ,  B01J23/8876 ,  B01J8/067 ,  C07C45/35 ,  B01J2208/00212 ,  B01J2208/00221 ,  B01J2219/00777

    摘要： A gas-phase mixture of propene and oxygen is catalytically oxidized by passing a reactant gas mixture comprising propene and oxygen through a plurality of catalyst containing contact tubes in a fixed bed reactor and simultaneously passing only one heat-exchange medium at elevated temperature over the exterior surfaces of the contact tubes in a longitudinal flow pattern which is cocurrent with the direction of flow of the reactants through said tube; simultaneously superposing a transverse flow on said longitudinal flow of heat exchange medium by means of an arrangement of successive baffles along the contact tubes which leave passage cross-sections free, thereby resulting in a meandrous flow of the heat-exchange medium through the reactor and setting the flow rate of said heat-exchange medium so that its temperature between the point of entry of the medium into the reactor and its point of exit increases by 2.degree. to 10.degree. C.; and obtaining product acrolein at a selectivity .gtoreq.85 mol % from the reactor at a single pass propene conversion .gtoreq.90 mol %.

    摘要翻译： 丙烯和氧气的气相混合物通过在固定床反应器中通过包含丙烯和氧气的反应气体混合物通过多个含有接触管的催化剂催化氧化，同时仅使一个热交换介质在高温下通过外部 接触管的表面以与通过所述管的反应物的流动方向并流的纵向流动图案; 同时通过沿着接触管的连续挡板的布置使横向流在所述纵向流动的热交换介质上，使得通道横截面自由，从而导致热交换介质通过反应器的蜿蜒流动和设定 所述热交换介质的流速使得其进入反应器的入口点和其出口点之间的温度升高2℃至10℃; 并且在单次丙烯转化率为90摩尔％时，以反应器的选择性> 85％摩尔得到产物丙烯醛。

    Process for the manufacture of acrylonitrile and methacrylonitrile
    10.
    发明授权
    Process for the manufacture of acrylonitrile and methacrylonitrile 失效
    制备丙烯腈和甲基丙烯腈的方法

    公开(公告)号：US5175334A

    公开(公告)日：1992-12-29

    申请号：US806959

    申请日：1991-12-12

    申请人： Dev D. Suresh ,  Maria S. Friedrich ,  Michael J. Seely

    发明人： Dev D. Suresh ,  Maria S. Friedrich ,  Michael J. Seely

    IPC分类号： B01J23/88 ,  B01J23/887 ,  B01J27/192 ,  C07C253/26

    CPC分类号： B01J23/8872 ,  B01J23/8876 ,  B01J23/8878 ,  B01J27/192 ,  C07C253/26 ,  Y02P20/52

    摘要： Olefins such as propylene and isobutylene are converted to the corresponding unsaturated nitriles, acrylonitrile, and methacrylonitrile, respectively, by reacting a mixture of the olefin, ammonia, and molecular oxygen-containing gas in the presence of a catalyst containing the oxides of bismuth, molybdenum, iron, nickel and magnesium, at least one element selected from the group comprising potassium and cesium, and optionally one element selected from the group comprising cobalt, phosphorus, manganese, tellurium, sodium, cerium, chromium, antimony and tungsten wherein the sum of cesium and potassium is at least 0.1 to 0.4

    摘要翻译： 烯烃如丙烯和异丁烯分别通过在含有铋，钼的氧化物的催化剂存在下使烯烃，氨和含分子氧的气体的混合物反应转化为相应的不饱和腈，丙烯腈和甲基丙烯腈 ，铁，镍和镁，选自钾和铯的至少一种元素，以及任选的一种选自钴，磷，锰，碲，钠，铈，铬，锑和钨的元素，其中， 铯和钾为至少0.1至0。