Process for the preparation of vinyl acetate catalyst
    3.
    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

    Abstract: 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.

    Abstract translation: 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。

    Maleic anhydride process
    4.
    发明授权
    Maleic anhydride process 失效
    马来酸酐工艺

    公开(公告)号:US4647673A

    公开(公告)日:1987-03-03

    申请号:US733441

    申请日:1985-05-13

    Abstract: A process is provided for the preparation of attrition resistant, microspheroidal fluid bed catalysts comprising the mixed oxides of vanadium and phosphorus in which a vanadium phosphorus mixed oxided catalyst precursor is densified, comminuted, formed into fluidizable particles and calcined under fluidization-type conditions. The present invention further provides the attrition resistant fluidizable catalysts prepared by the inventive process, and further provides a process for utilizing such attrition resistant catalysts in the production of maleic anhydride in the vapor phase by the oxidation of 4 carbon atom hydrocarbons.

    Abstract translation: 提供了一种制备耐磨耗的微球形流化床催化剂的方法,其包含钒和磷的混合氧化物,其中钒磷混合氧化催化剂前体致密化,粉碎,形成可流化颗粒并在流化型条件下煅烧。 本发明还提供了通过本发明方法制备的耐磨性可流化催化剂,并且还提供了通过氧化4个碳原子烃在气相中生产马来酸酐时利用这种耐磨催化剂的方法。

    Acetic acid from ethylene
    5.
    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 classification number: C07C51/25

    Abstract: 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.

    Abstract translation: 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。

    Process for the fluidized bed oxidation of ethane to acetic acid
    7.
    发明授权
    Process for the fluidized bed oxidation of ethane to acetic acid 失效
    将乙烷流化床氧化成乙酸的方法

    公开(公告)号:US5300684A

    公开(公告)日:1994-04-05

    申请号:US803882

    申请日:1991-12-09

    CPC classification number: C07C53/08 C07C51/215

    Abstract: Disclosed is a process for oxidizing ethane to acetic acid which comprises feeding ethane and a recycle gas to a fluidized bed reaction zone containing fluidized particulate solid oxidation catalyst, feeding a molecular oxygen-containing gas separately from said ethane to said reaction zone so that said molecular oxygen-containing gas first mixes with the major portion of the combustible hydrocarbon feed gases within the fluidized bed, said process including the steps of (1) cooling the gaseous effluent from the reaction zone, (2) separating most of the acetic acid in liquid form from the effluent gases, leaving a gaseous stream containing nearly all of the carbon oxides contained in said effluent, (3) purging a small portion of said gaseous stream and recycling most of said gaseous stream as part of the feed to said reaction zone,wherein said purging serves to prevent build-up of carbon oxides in the reaction zone, and said recycling serves to maintain a high proportion of carbon oxides in said reaction zone gases, thus aiding in moderating the temperature elevating effect of the highly exothermic oxidation reaction in said reaction zone.

    Abstract translation: 公开了一种将乙烷氧化成乙酸的方法,该方法包括将乙烷和循环气体进料到含有流化的颗粒状固体氧化催化剂的流化床反应区,将含有分子的含氧气体与所述乙烷分开供给所述反应区,使得所述分子 首先将含氧气体与流化床内的可燃烃进料气体的主要部分混合,所述方法包括以下步骤:(1)冷却来自反应区的气态流出物,(2)将大部分乙酸分离成液体 从流出气体中形成,留下含有所述流出物中所含的几乎所有碳氧化物的气流,(3)吹扫所述气流的一小部分并将大部分所述气流作为进料的一部分再循环到所述反应区, 其中所述清洗用于防止反应区中碳氧化物的累积,并且所述循环用于维持高比例的碳氧化物 在所述反应区气体中,从而有助于缓和所述反应区中高放热氧化反应的温度升高作用。

    In situ activation process for fluid bed oxidation catalysts
    8.
    发明授权
    In situ activation process for fluid bed oxidation catalysts 失效
    流化床氧化催化剂的原位活化方法

    公开(公告)号:US4748140A

    公开(公告)日:1988-05-31

    申请号:US685437

    申请日:1984-12-24

    Abstract: A process for activating fluid bed catalysts useful for producing maleic anhydride from 4 carbon atom hydrocarbons is provided including contacting the fluidized catalyst containing the mixed oxides of vanadium and phosphorus with oxygen and a reducing gas at least partially combustible with oxygen at elevated temperatures sufficient to cause such combustion, wherein the molar ratio of reducing gas to oxygen is greater than the stoichiometric ratio required for complete combustion of the reducing gas. Also provided are catalysts activated by the process of the invention, as well as a process for producing maleic anhydride utilizing the catalysts thus activated.

    Abstract translation: 提供一种活化用于从4个碳原子烃生产马来酸酐的流化床催化剂的方法,包括使含有钒和磷的混合氧化物的流化催化剂与氧气和至少部分可氧化的还原气体接触,所述还原气体在足以导致 这种燃烧,其中还原气体与氧气的摩尔比大于完全燃烧还原气体所需的化学计量比。 还提供了通过本发明的方法活化的催化剂,以及利用如此活化的催化剂生产马来酸酐的方法。

    Process for the oxydehydrogenation of ethane to ethylene
    10.
    发明授权
    Process for the oxydehydrogenation of ethane to ethylene 失效
    将乙烷氧化脱氢成乙烯的方法

    公开(公告)号:US4410752A

    公开(公告)日:1983-10-18

    申请号:US346029

    申请日:1982-02-05

    CPC classification number: B01J23/002 B01J27/198 C07C5/48 B01J2523/00 Y02P20/52

    Abstract: The invention herein is directed toward a process for the oxydehydrogenation of ethane in fixed-bed or fluid-bed reactors at temperatures of less than about 600.degree. C. The process includes the step of contacting ethane and an oxygen-containing gas with a catalyst composition having the formula V.sub.1.0 P.sub.a O.sub.x. The catalyst can be employed in supported or unsupported form. A promoter metal can optionally be present in the catalyst.

    Abstract translation: 本发明涉及一种在固定床或流化床反应器中在小于约600℃的温度下乙烷氧化脱氢的方法。该方法包括使乙烷和含氧气体与催化剂组合物接触的步骤 具有公式V1.0PaOx。 催化剂可以以负载或非负载形式使用。 助催化剂金属可任选地存在于催化剂中。

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