| 磷钨酸／硅胶催化剂催化合成环己酮1，2-丙二醇缩酮 |
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| 引用本文： | 杨才峰,张义军,杨水金. 磷钨酸／硅胶催化剂催化合成环己酮1，2-丙二醇缩酮[J]. 化工中间体, 2007, 0(10): 7-8,29 |
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| 作者姓名： | 杨才峰 张义军 杨水金 |
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| 作者单位： | 湖北师范学院化学与环境工程系,湖北,黄石,435002 |
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| 摘 要： | 以溶胶-凝胶法制备的磷钨酸／硅胶为催化剂、通过环己酮和1，2-丙二醇反应合成了环己酮1，2-丙二醇缩酮，探讨磷钨酸／硅胶对缩酮反应的催化活性，较系统地研究了酮醇量比、催化剂用量、反应时间、带水剂用量对产品收率的影响。实验表明：磷钨酸／硅胶是合成环己酮1-2-丙二醇缩酮的良好催化剂，在门（酮）：门（醇）=1：1．5、催化剂用量为反应物料总质量的0．5％、环己烷为带水剂、反应时间45min的优化条件下，环己酮1，2-丙二醇缩酮的收率可达79．8％．
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| 关 键 词： | 环己酮1,2-丙二醇缩酮 磷钨酸/硅胶 催化 缩酮反应 |
| 文章编号： | 1006-253x（2007）10-007-2 |
| 修稿时间： | 2007-07-27 |
Catalytic Synthesis of Cyclohexanone 1,2-Propylene ketal over Phosphotungstic acid/silica |
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| YANG Cai-feng,ZHANG Yi-jun,YANG Shui-jin. Catalytic Synthesis of Cyclohexanone 1,2-Propylene ketal over Phosphotungstic acid/silica[J]. , 2007, 0(10): 7-8,29 |
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| Authors: | YANG Cai-feng ZHANG Yi-jun YANG Shui-jin |
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| Affiliation: | YANG Cai-feng, ZHANG Yi-jun, YANG Shui-jin (Department of Chemistry＇and Environmental Engineering, Hubei Normal University, Huangshi 435002,Hubei, China) |
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| Abstract: | Cyclohexanone 1,2-propylene ketal was synthesis from cyclohexanone and 1,2-propylene glycol in the presence of phosphotungstic acid /silica prepared by sol-gel method. The factors influencing the synthesis were discussed and the best conditions were found out. The optimum conditions are： molar ratio of cyclohexanone to 1,2-propylene glycol is 1：1.5, the quantity of catalyst is equal to 0.5% of feed stocks, dried cyclohexane 8 mL, and the reaction time 45 min. Phosphotungstic acid / silica is an excellent catalyst for synthesizing cyclohexanone 1,2-propylene ketal and its yield can reach over 79.8%. |
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| Keywords: | cyclohexanone 1,2-propylene ketal phosphotungstic acid /silica catalysis ketalation |
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