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    • 67. 发明授权
    • Process for producing diol compounds
    • 二醇化合物的制备方法
    • US5536888A
    • 1996-07-16
    • US364712
    • 1994-12-27
    • Yasushi ShiomiHiroyuki FukushimaToshihiko SumidaShinichi Furusaki
    • Yasushi ShiomiHiroyuki FukushimaToshihiko SumidaShinichi Furusaki
    • B01J23/80B01J37/03C07C29/149C07C31/20
    • B01J37/03B01J23/80C07C29/149
    • A diol compound, for example, hexanediol, is produced with a high efficiency by esterifying a carboxylic acid mixture, collected from a reaction product mixture of a liquid phase oxidation of cyclohexane, with an esterifying agent and hydrogenate-decomposing the resultant esterification product mixture with hydrogen. The hydrogenate-decomposition is carried out by using a specific catalyst free from chromium and including a member selected from (A) copper and zinc-containing catalytic materials which are prepared by mixing an aqueous solution of water-soluble copper and zinc salts with an aqueous alkali metal or ammonium carbonate or alkali metal or ammonium hydrogen carbonate solution, reducing the resultant precipitate comprising a basic copper and zinc carbonate mixture with hydrogen and partially oxidizing the resultant reduction product with an oxygen-containing gas, and (B) copper and zinc-containing catalytic materials which are prepared by conducting the same mixing procedure as that for the catalytic material (A) except that the mixing is carried out at a temperature of 60.degree. to 95.degree. C. at a pH of 6.5 to 9.0, and by calcining the resultant precipitate at a temperature of 300.degree. C. to 450.degree. C.
    • 通过将从环己烷的液相氧化反应产物混合物收集的羧酸混合物与酯化剂酯化,并将所得酯化产物混合物氢化分解,从而高效率地生产二醇化合物,例如己二醇, 氢。 氢化物分解通过使用不含铬的特定催化剂进行,并且包括选自(A)铜和锌的催化材料的成员,其通过将水溶性铜和锌盐的水溶液与水溶液 碱金属或碳酸铵或碱金属或碳酸氢铵溶液,将含有碱性铜和碳酸锌混合物的所得沉淀物用氢气还原,并用含氧气体部分氧化所得的还原产物,和(B)铜和锌 - 含有催化剂材料,其通过进行与催化材料(A)相同的混合程序制备,不同之处在于在6.5至9.0的pH下在60℃至95℃的温度下进行混合,并通过煅烧 所得沉淀物在300℃至450℃的温度下