发明名称 |
Process for producing diol compounds. |
摘要 |
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 from (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 to 95 DEG C at a pH of 6.5 to 9.0, and by calcining the resultant precipitate at a temperature of 300 DEG C to 450 DEG C. |
申请公布号 |
EP0661255(A1) |
申请公布日期 |
1995.07.05 |
申请号 |
EP19940120646 |
申请日期 |
1994.12.24 |
申请人 |
UBE INDUSTRIES, LTD. |
发明人 |
SHIOMI, YASUSHI, C/O UBE RESEARCH LABORATORY;FUKUSHIMA, HIROYUKI, C/O UBE RESEARCH LABORATORY;SUMIDA, TOSHIHIKO, C/O UBE RESEARCH LABORATORY;FURUSAKI, SHINICHI, C/O UBE RESEARCH LABORATORY |
分类号 |
B01J23/80;B01J37/03;C07C29/149;C07C31/20 |
主分类号 |
B01J23/80 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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