K5CoW12O40 3H2O催化合成环己酮1,2-丙二醇缩酮

• 作 者: 赖君玲 韩春玉 刘春生 罗根祥
• 机 构: 辽宁石油化工大学化学与材料科学学院,
• 出 处: 辽宁石油化工大学学报
• 发表日期: 2010年01期
• 关键词: 环己酮1 2-丙二醇缩酮 杂多化合物K5CoW12O40·3H2O 催化 缩酮反应

研究了杂多化合物K_5CoW_(12)O_(40)·3H_2O作为催化剂对环己酮和1,2-丙二醇缩酮的催化活性。系统考察了酮醇物质的量比、催化剂质量、带水剂体积、反应时间和催化剂重复使用性等因素对产品收率的影响。实验结果表明,杂多化合物K_5CoW_(12)O_(40)·3H_2O是合成环己酮1,2-丙二醇缩酮的良好催化剂,在酮醇物质的量比为1:1.4、催化剂质量为0.5 g、带水剂环己烷体积为9 mL、反应时间为70 min的最佳条件下,环己酮1,2-丙二醇缩酮的收率最高可达94.2%。

The catalytic activities of heteropoly compounds K_5CoW_ (12) O_ (40) · 3H_2O as catalysts for cyclohexanone and 1,2-propanediol ketal were studied. The effects of the ratio of ketol to alcohol, the mass of catalyst, the volume of water-carrying agent, the reaction time and the reusability of the catalyst on the yield of the product were systematically investigated. The experimental results show that the heteropoly compound K_5CoW_ (12) O_ (40) · 3H_2O is a good catalyst for the synthesis of cyclohexanone 1,2-propanediol ketal. When the molar ratio of ketol to alcohol is 1: 1.4 and the mass of catalyst is 0.5 g , Cyclohexane with a volume of 9 mL and a reaction time of 70 min, the yield of cyclohexanone 1,2-propanediol ketal was up to 94.2%.