摘要
以环己酮和乙二醇为原料合成环己酮乙二醇缩酮,考察了磷钨酸/硅胶催化剂对缩酮反应的催化活性。结果表明,磷钨酸/硅胶催化剂是合成环己酮乙二醇缩酮的良好催化剂,确定了最佳合成条件:n(环己酮)∶n(乙二醇)=1∶1.4,磷钨酸/硅胶催化剂用量为反应物总质量的0.2%,带水剂环己烷用量为8 mL,反应时间为30 min。在此条件下,环己酮乙二醇缩酮的收率可达76.4%。
Cyclohexanone ethylene ketal was synthesized with cyelohexanone and glycol as the materials, and the catalytic activity of phosphotungstic acid/silica gel catalyst in ketol reaction was studied. According to the results, silicotungstic acid/silica gel (SG) is a good catalyst for the synthesis of cyclohexanone ethylene ketal. The optimum synthesis conditions were identified: n (cyclohexanone) : n (glycol) = 1: 1.4, amount of watercarrying agent (i. e. cyclohexane) : 8 mL, reaction time: 30 min. The yield of cyclohexanone ethylene ketal can reach 76.4% at such conditions.
出处
《精细石油化工进展》
CAS
2011年第12期50-52,共3页
Advances in Fine Petrochemicals
基金
湖北省自然科学基金(2005ABA053)资助项目
关键词
环己酮乙二醇缩酮
磷钨酸
硅胶
催化
缩酮反应
cyclohexanone ethylene ketal
phosphotungstic acid
silica gel
catalysis
ketal reaction