| 活性碳负载磷钨酸催化合成环己酮双缩季戊四醇 |
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| 引用本文： | 蒋小平,张敏,尹笃林.活性碳负载磷钨酸催化合成环己酮双缩季戊四醇[J].零陵学院学报,2002(6). |
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| 作者姓名： | 蒋小平 张敏 尹笃林 |
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| 作者单位： | 零陵学院化学系 湖南永州425000
(蒋小平，张敏)，湖南师范大学化学化工学院 湖南长沙410081(尹笃林) |
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| 摘 要： | 研究了活性碳负载磷钨酸催化环己酮双缩季戊四醇反应,考察了负载量、催化剂用量、反应时间、反应物配比以及溶剂对缩酮化反应的影响.结果表明:在磷钨酸的负载量为22.1%,季戊四醇与环己酮的摩尔比为1:2.2,油浴温度130-140℃,用甲苯作带水剂,反应1.5h,环己酮双缩季戊四醇的产率为93.4%,催化剂稳定性好,可重复使用.
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| 关 键 词： | 季戊四醇 缩酮 活性碳负载磷钨酸 |
SYNTHESIS OF CYCLOHEXANONE PENTAERYTHRITOL KETAL CATALYZED BY PHOSPHOTUNGSTIC ACID SUPPORTED ON ACTIVE CARBON |
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| Authors: | JIANG Xiao-Ping ZHANG Min YING Du-Ling |
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| Institution: | JIANG Xiao-Ping1,ZHANG Min1,YING Du-Ling2 |
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| Abstract: | The condensation of cyclohexanone and pentaerythritol catalyzed by phosphotungstic acid supported on active carbon was invenstigated. The influences of reaction time, oil bath temperature, ratio of reactants and quantity and stabtility of catalyst were examined.The optimal conditions for this reaction were as follows: supporting quantity of catalyst on active carbon 22.1%,molar ratio of cyclohexanone to pentaerythritol2.2:1,reaction time 90min and toluene as water-carrying agent. The yield was up to 93.4%,and the catalyst was stabtilitive and reusable. |
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| Keywords: | pentaerythritol ketalization phosphotungstic acid supported on active carbon |
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