Process for the preparation of vinyl acetate catalyst
    7.
    发明授权
    Process for the preparation of vinyl acetate catalyst 失效
    乙酸乙烯酯催化剂的制备方法

    公开(公告)号:US5536693A

    公开(公告)日:1996-07-16

    申请号:US252800

    申请日:1994-06-02

    摘要: A process of producing a fluid bed oxacylation catalyst for olefins and diolefins having the following formula Pd-M-A whereM=Au, Cd, Bi, Cu, Mn, Fe, Co, Ce, U and mixtures thereof,A=an alkali metal or mixture thereof, andM is present in the range of from 0 to 5 wt %, comprising milling a fixed bed oxacylation catalyst precursor comprising Pd-M on a fixed support with a fluid bed catalyst aqueous binder material to form a uniform aqueous slurry, drying the aqueous slurry to remove the water to form microspheroidal particles of solid fluid bed catalyst precursor, impregnating the microspheroidal particles with a solution of alkali metal salt to form the fluid bed catalyst. The catalyst is particularly useful in the manufacture of vinyl acetate from ethylene, acetic acid and oxygen.

    摘要翻译: 制备具有下式Pd-MA的烯烃和二烯烃的流化床氧化催化剂的方法,其中M = Au,Cd,Bi,Cu,Mn,Fe,Co,Ce,U及其混合物,A =碱金属或 M的存在量为0至5重量%,包括在固定载体上用流化床催化剂水性粘合剂材料研磨包含Pd-M的固定床氧化酰基化催化剂前体以形成均匀的含水浆料,干燥 该含水浆料除去水以形成固体流化床催化剂前体的微球形颗粒,用碱金属盐溶液浸渍微球颗粒以形成流化床催化剂。 该催化剂特别可用于从乙烯,乙酸和氧气制备乙酸乙烯酯。

    Mixed metal oxide catalyst for producing low molecular weight
hydrocarbons from carbon monoxide and hydrogen
    8.
    发明授权
    Mixed metal oxide catalyst for producing low molecular weight hydrocarbons from carbon monoxide and hydrogen 失效
    用于从一氧化碳和氢气生产低分子量烃的混合金属氧化物催化剂

    公开(公告)号:US4451579A

    公开(公告)日:1984-05-29

    申请号:US440120

    申请日:1982-11-08

    摘要: Low molecular weight hydrocarbons are produced by contacting carbon monoxide and hydrogen at elevated temperatures and pressures with a catalyst comprising oxides of chromium, molybdenum and/or tungsten, copper, thorium or uranium and at least one alkali or alkaline earth metal. Catalysts are provided which are prepared by the procedure of adding an alkali or alkaline earth metal carbonate to an aqueous solution or slurry containing decomposable salts of thorium or uranium and copper chromate, copper tungstate and/or copper molybdate to form a precipitate. The precipitate is heated, neutralized, dried and thereafter calcined and reduced.

    摘要翻译: 通过使含有铬,钼和/或钨,铜,钍或铀的氧化物和至少一种碱金属或碱土金属的催化剂在高温和高压下使一氧化碳和氢气接触来制备低分子量烃。 提供催化剂,其通过将碱金属或碱土金属碳酸盐添加到含有钍或铀和铬酸铜的可分解盐,铜酸铜和/或钼酸铜的水溶液或浆料中以形成沉淀物的方法制备。 将沉淀物加热,中和,干燥,然后煅烧并还原。

    Acetic acid from ethylene
    9.
    发明授权
    Acetic acid from ethylene 失效
    来自乙烯的乙酸

    公开(公告)号:US5304678A

    公开(公告)日:1994-04-19

    申请号:US625191

    申请日:1990-12-10

    CPC分类号: C07C51/25

    摘要: Disclosed is making acetic acid by reacting in a reaction zone ethylene and molecular oxygen in the presence of a solid catalyst containing the elements and proportions indicated by the empirical formulaPd.sub.a M.sub.b TiP.sub.c O.sub.x (formula 1)whereM is selected from Cd, Au, Zn, Tl, alkali metals and alkaline earth metals,a is from 0.0005 to 0.2b is from zero to 3ac is 0.5 to 2.5, andx is a value sufficient to satisfy the valence requirements of the other elements present, andwherein such catalyst contains crystalline TiP.sub.2 O.sub.7.

    摘要翻译: 公开了在含有元素的固体催化剂的存在下在反应区乙烯和分子氧中反应制备乙酸,并且经验式PdaMbTiPcOx(式1)所示的比例,其中M选自Cd,Au,Zn,Tl, 碱金属和碱土金属,a为0.0005〜0.2b,为0〜3ac为0.5〜2.5,x为足以满足存在的其他元素的化合价要求的值,且该催化剂含有结晶TiP 2 O 7。

    Preparation of maleic anhydride
    10.
    发明授权
    Preparation of maleic anhydride 失效
    马来酸酐的制备

    公开(公告)号:US4400522A

    公开(公告)日:1983-08-23

    申请号:US374219

    申请日:1982-05-03

    摘要: The present invention provides a method for the preparation of oxidation catalysts containing mixed oxides of vanadium and phosphorus, which catalysts are particularly effective in the oxidation of n-butane, n-butenes, 1,3-butadiene or a mixture thereof with molecular oxygen or an oxygen-containing gas in the vapor phase to produce high yields of maleic anhydride with good selectivity. Vanadium phosphorus mixed oxide catalyst precursors prepared in solution in organic media are extracted from the organic media with water, with subsequent drying down to recover a precursor solid, or impregnation of a support with the aqueous solution.

    摘要翻译: 本发明提供一种制备含有钒和磷的混合氧化物的氧化催化剂的方法,该催化剂在正丁烷,正丁烯,1,3-丁二烯或其与分子氧或其混合物的氧化中是特别有效的 气相中的含氧气体,以产生高产率的马来酸酐,具有良好的选择性。 在有机介质溶液中制备的钒磷混合氧化物催化剂前体用水从有机介质中萃取,随后干燥以回收前体固体,或用水溶液浸渍载体。