Process for the preparation of acetic acid
    1.
    发明授权
    Process for the preparation of acetic acid 失效
    乙酸的制备方法

    公开(公告)号:US4661631A

    公开(公告)日:1987-04-28

    申请号:US566749

    申请日:1983-12-28

    CPC classification number: C07C51/12

    Abstract: Acetic acid is produced by reacting methanol with carbon monoxide in the presence of hydrogen, in the presence of a catalyst comprising a molybdenum-nickel or a tungsten-nickel cocatalyst component, in the presence of an iodide, and in the presence of a promoter comprising an organo-phosphorus compound or an organo-nitrogen compound, the ratio of the partial pressure of hydrogen to the partial pressure of carbon monoxide in the reaction zone being 0.05 to 0.4.

    Abstract translation: 在碘存在下,在含有钼 - 镍或钨 - 镍助催化剂组分的催化剂存在下,在氢的存在下,在甲醇与一氧化碳的存在下,在含有 有机磷化合物或有机氮化合物,反应区中氢的分压与一氧化碳分压的比例为0.05〜0.4。

    Process for preparing silver catalysts
    3.
    发明授权
    Process for preparing silver catalysts 失效
    制备银催化剂的方法

    公开(公告)号:US4663303A

    公开(公告)日:1987-05-05

    申请号:US832099

    申请日:1986-02-24

    CPC classification number: B01J23/50 C07D301/10 Y02P20/52 Y10S502/512

    Abstract: A silver salt solution suitable for depositing silver on a support in the preparation of silver catalysts is made by reacting a silver compound with a neo-acid, in a hydrocarbon solvent. The reaction is completed under reflux conditions, thereby removing water formed by the reaction and reacting at least 90% of the unreacted acid. Therefore, the solution may be used without further processing to impregnate a porous support, thereby providing a catalyst useful for oxidation of ethylene oxide.

    Abstract translation: 通过在烃溶剂中使银化合物与新酸反应,制备适用于在银催化剂制备中在载体上沉积银的银盐溶液。 反应在回流条件下完成,从而除去由反应形成的水并使至少90%的未反应的酸反应。 因此,可以不经进一步处理而使溶液浸渍多孔载体,从而提供可用于氧化环氧乙烷的催化剂。

    Purification of ethylene glycol derived from ethylene carbonate
    4.
    发明授权
    Purification of ethylene glycol derived from ethylene carbonate 失效
    来自碳酸亚乙酯的乙二醇的纯化

    公开(公告)号:US4519875A

    公开(公告)日:1985-05-28

    申请号:US608639

    申请日:1984-05-09

    CPC classification number: C07C29/80 B01D3/009 C07C29/88 Y02P20/127 Y10S203/06

    Abstract: Ethylene glycol is purified, particularly for fiber-grade applications, by removal of the residual ethylene carbonate from which the glycol was derived. The effluent from a reactor in which ethylene carbonate is hydrolyzed to ethylene glycol is distilled to produce a lower-boiling fraction comprising substantially ethylene glycol and water and a higher-boiling fraction comprising substantially ethylene glycol, higher glycols, and concentrated in hydrolysis catalyst. The higher-boiling fraction is recirculated to reflux against the lower-boiling product, thereby essentially completing the hydrolysis of unreacted ethylene carbonate thereby reducing the ethylene carbonate content of the ethylene glycol to very low levels suitable for fiber-grade applications.

    Abstract translation: 纯化乙二醇,特别是纤维级应用,通过除去衍生二醇的残余碳酸亚乙酯。 蒸馏出碳酸亚乙酯被水解成乙二醇的反应器的流出物,以产生基本上包含乙二醇和水的低沸点馏分和基本上包含乙二醇,高级二醇和在水解催化剂中浓缩的高沸点馏分。 将较高沸点的馏分再循环回到低沸点产物的回流中,从而基本上完成了未反应的碳酸乙烯酯的水解,从而将乙二醇的碳酸亚乙酯含量降至非常低的水平,适用于纤维级应用。

    Process for preparing silver salt solutions
    5.
    发明授权
    Process for preparing silver salt solutions 失效
    制备银盐溶液的方法

    公开(公告)号:US5342973A

    公开(公告)日:1994-08-30

    申请号:US700894

    申请日:1991-05-13

    CPC classification number: B01J23/50 C07D301/10 Y02P20/52 Y10S502/512

    Abstract: A silver salt solution suitable for depositing silver on a support in the preparation of silver catalysts is made by reacting a silver compound with a neo-acid, in a hydrocarbon solvent. The reaction is completed under reflux conditions, thereby removing water formed by the reaction and reacting at least 90% of the unreacted acid. Therefore, the solution may be used without further processing to impregnate a porous support, thereby providing a catalyst useful for oxidation of ethylene oxide.

    Abstract translation: 通过在烃溶剂中使银化合物与新酸反应,制备适用于在银催化剂制备中在载体上沉积银的银盐溶液。 反应在回流条件下完成,从而除去由反应形成的水并使至少90%的未反应的酸反应。 因此,可以不经进一步处理而使溶液浸渍多孔载体,从而提供可用于氧化环氧乙烷的催化剂。

    Optimizing the yield of maleic anhydride catalyst
    6.
    发明授权
    Optimizing the yield of maleic anhydride catalyst 失效
    优化马来酸酐催化剂的产率

    公开(公告)号:US4795818A

    公开(公告)日:1989-01-03

    申请号:US183372

    申请日:1988-04-11

    CPC classification number: C07C51/215 B01J23/002 B01J27/198 B01J2523/00

    Abstract: A method of optimizing the yield of a vanadium-phosphorus catalyst during the oxidation of butane to maleic anhydride, which comprises establishing the temperature at which the catalyst provides the desired percentage conversion and yield of maleic anhydride with the established feed composition and then maintaining that temperature by continuously introducing an amount of a suitable phosphorus compound necessary to prevent a decline in selectivity to maleic anhydride without significantly increasing the temperature.

    Abstract translation: 在将丁烷氧化成马来酸酐期间优化钒磷催化剂的产率的方法,其包括确定催化剂提供所需百分比转化率的温度和马来酸酐与所确定的进料组成的产率,然后保持该温度 通过连续引入一定量的合适的磷化合物,以防止马来酸酐的选择性下降而不显着升高温度。

    Method of treating alpha-methylbenzylalcohol dehydration products
    8.
    发明授权
    Method of treating alpha-methylbenzylalcohol dehydration products 失效
    α-甲基苯甲醇脱水产物的处理方法

    公开(公告)号:US4273622A

    公开(公告)日:1981-06-16

    申请号:US97452

    申请日:1979-11-26

    Inventor: Mitchell Becker

    CPC classification number: C07C1/20 C07C1/24

    Abstract: Residual products obtained in the catalytic dehydration of alpha-methylbenzyl alcohol are treated to recover monomeric styrene values by a process which comprises fractionally distilling the residual products in two stages under different temperature and time conditions.

    Abstract translation: 在α-甲基苄醇的催化脱水中获得的残余物通过包括在不同温度和时间条件下分两次分级蒸馏剩余产物的方法处理以获得单体苯乙烯值。

    Recovery of alkylene glycols by azeotropic distillation
    9.
    发明授权
    Recovery of alkylene glycols by azeotropic distillation 失效
    通过共沸蒸馏回收亚烷基二醇

    公开(公告)号:US4151048A

    公开(公告)日:1979-04-24

    申请号:US804033

    申请日:1977-06-06

    CPC classification number: C07C29/82

    Abstract: Ethylene glycol or 1,2-propylene glycol contained in mixtures with lower carboxylate esters of glycol, e.g. as produced by hydrolysis of the esters, is recovered by distillation of the mixtures with a hydrocarbon forming a minimum boiling azeotrope with the ethylene dlycol or 1,2-propylene glycol, the hydrocarbon being maintained in an inert atmosphere in the system.

    Abstract translation: 与乙二醇的低级羧酸酯的混合物中所含的乙二醇或1,2-丙二醇,例如 通过酯的水解产生的,通过与形成与乙二醇或1,2-丙二醇形成最低沸点共沸物的烃混合物蒸馏回收,烃在系统中保持在惰性气氛中。

    Process for the recovery of alkylene glycols
    10.
    发明授权
    Process for the recovery of alkylene glycols 失效
    回收亚烷基二醇的方法

    公开(公告)号:US4045294A

    公开(公告)日:1977-08-30

    申请号:US612824

    申请日:1975-09-12

    CPC classification number: C07C29/82

    Abstract: Ethylene glycol or 1,2-propylene glycol contained in mixtures with lower carboxylate esters of the glycol is recovered by azeotropic distillation of the mixtures with an azeotroping agent which is a hydrocarbon which has a boiling point at atmospheric pressure above 190.degree. C but at most about 220.degree. C and is free from linear secondary and tertiary hydrogen atoms.

    Abstract translation: 与二醇的低级羧酸酯的混合物中含有的乙二醇或1,2-丙二醇通过与共沸剂共沸蒸馏来回收,共沸剂是沸点在大气压190℃以上但最多 约220℃,不含线性二级和三级氢原子。

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