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    • 6. 发明授权
    • Catalysts for the hydrogenation of aqueous maleic acid to 1,4-butanediol
    • 用于将马来酸水溶液氢化成1,4-丁二醇的催化剂
    • US5698749A
    • 1997-12-16
    • US524195
    • 1995-09-06
    • S. Erik PedersenJohn G. Frye, Jr.Thomas G. AttigJohn R. Budge
    • S. Erik PedersenJohn G. Frye, Jr.Thomas G. AttigJohn R. Budge
    • B01J23/656C07C29/149C07C29/156C07C29/17C07C31/20C07D307/08
    • C07C29/177
    • Maleic acid, maleic anhydride or other hydrogenatable precursor are catalytically hydrogenated to 1,4-butanediol and tetrahydrofuran. It has been discovered that high yields of 1,4-butanediol are achieved when the hydrogenation catalyst comprises at least one noble metal of Group VIII of the Periodic Table and at least one of rhenium, tungsten or molybdenum on a carbon support wherein the carbon support has been contacted with an oxidizing agent prior to the deposition of the metals. This hydrogenation catalyst is prepared by the steps of (i) oxidizing the carbon support by contacting the carbon support with an oxidizing agent, (ii) impregnating in one or more impregnation steps comprising contacting the carbon support with a source of Group VIII metal and at least one metal selected from the group consisting of rhenium, tungsten and molybdenum being in at least one solution, (iii) after each impregnation step, drying at a temperature under about 150.degree. C. the impregnated carbon support to remove solvent, (iv) heating the impregnated carbon support at a temperature of about 100.degree. C. to about 350.degree. C. under reducing conditions.
    • 将马来酸,马来酸酐或其它可氢化的前体催化氢化成1,4-丁二醇和四氢呋喃。 已经发现,当氢化催化剂包含至少一种元素周期表第VIII族的贵金属和碳载体上的铼,钨或钼中的至少一种时,可实现高收率的1,4-丁二醇,其中碳载体 在金属沉积之前已经与氧化剂接触。 该加氢催化剂是通过以下步骤制备的:(i)通过使碳载体与氧化剂接触来氧化碳载体,(ii)在一个或多个浸渍步骤中浸渍,包括使碳载体与VIII族金属源接触, 选自铼,钨和钼中的至少一种金属在至少一种溶液中,(iii)在每个浸渍步骤之后,在约150℃的温度下干燥浸渍的碳载体以除去溶剂,(iv) 在还原条件下,在约100℃至约350℃的温度下加热浸渍的碳载体。