环戊烯水合法制备环戊醇的研究(Ⅱ)——工艺优化

Preparation of Cyclopentanol By Direct Hydration of Cyclopentene(Ⅱ):Optimization of the Reaction

以正丁醇为溶剂,强酸性阳离子交换树脂Amberlyst36为催化剂,环戊烯为原料,采用直接水合法合成环戊醇。通过考察了反应温度、反应时间、助催化剂的种类、n(水)∶n(环戊烯)、催化剂的用量等关键因素对反应的影响,得出适宜的反应条件:以正丁醇为溶剂,在n(环戊烯)∶n(水)为1∶4,催化剂Amberlyst36的用量为体系总质量的9%,反应温度150℃,反应时间2 h的条件下,得到环戊烯的转化率为12.42%,环戊醇的选择性为95.78%,并在此条件下考察了催化剂的稳定性,结果表明催化剂性能稳定。

The preparation of cyclopentanol by direct hydration of cyclopentene was studied with strong acidic cation Amberlyst36 as catalyst and 1-butanol as solvent. The influences of reaction temperature, reaction time, co-catalyst type, the molar ratio of H2O to cyclopentene and dosage of catalyst were studied. The optimum reaction eonditions were obtained：molar ratio of H2O to cyclopentene was 1：4,dosage of catalyst was 9% of the total mass,reaction temperature 150 ℃ , reaction time 2 h, the conversion of cyclo- pentene was 12.42% , and the selectivity to cyclopentanol was 95.78%. And in this condition the stability of the catalyst was investigated. The results showed that the eatalyst was stable.