摘要
以稀土改性固体超强酸SO42-/TiO2-La2O3为催化剂,通过丁酮和乙二醇反应合成了丁酮乙二醇缩酮,探讨了SO42-/TiO2-La2O3对缩酮反应的催化活性,较系统地研究了酮醇物质的量比,催化剂用量,反应时间诸因素对产品收率的影响。实验表明:在n(酮)∶n(醇)=1∶2.0,催化剂用量为反应物料总质量的0.50%,环己烷为带水剂,反应时间2.0 h的优化条件下,丁酮乙二醇缩酮的收率可达58.1%。
Butanone glycol ketal was synthesized from butanone and ethylene glycol in the presence of SO4^2-/TiO2-La2O3. The factors influencing the synthetic process were discussed and the best conditions were found out. The optimum conditions are： molar ratio of butanone to ethylene glycol is 1 ： 2.0,the quantity of catalyst is equal to 0.50% of feed stocks,the reaction temperature is 79-89℃ ,and the reaction time is 2.0 h. SO4^2-/TiO2-La2O3 is an excellent catalyst, for synthesizing butanone glycol ketal ＇and its yield can reach over 58. 1%.
出处
《化工科技》
CAS
2007年第3期12-14,共3页
Science & Technology in Chemical Industry
基金
湖北省教育厅教研基金资助项目(20060335)
