摘要
以环己酮和乙二醇为原料,稀土复合固体超强酸SO_4^(2-)/ZrO_2/Gd^(3+)为催化剂,在微波辐射和无溶剂下,合成环己酮乙二醇缩酮。探讨了酮醇物质的量比、催化剂用量、微波功率和辐射时间对产品收率的影响。结果表明,环己酮乙二醇缩酮的最佳合成条件为:n(环己酮):n(乙二醇)=1:3.0,催化剂用量为反应物总质量的1.50%,微波功率为425W,辐射时间为10min。在此条件下,缩酮收率可达90.4%,说明稀土复合固体超强酸SO_4^(2-)/ZrO_2/Gd^(3+)是一种合成环己酮乙二醇缩酮的优良催化剂。
Cyclohexanone glycol ketal was synthesized using cyclohexanone and glycol as reactants and rare earth composite solid superacid SO4^2-/ZrO2/Gd^3＋ as catalysts without solvent under microwave irradiation. The effects of reactant molar ratio, amount of catalyst, microwave irradiation power, microwave irradiation time on the yield of cyclohexanone glycol ketal were studied. The optimal conditions were as follows：n（cyclohexanone）： n（glycol）=1 ： 3.0, mass ratio of catalyst to reactant 1. 50%, microwave irradiation power 425 W and radiation time 10 min. Under these conditions, the yield of cyclohexanone glycol ketal could be reach 90. 4%, indicating that rare earth composite solid superacid SO4^2-/ZrO2/Gd^3＋ is a good catalyst for the synthesis of cyclohexanone glycol ketal.
出处
《化工科技》
CAS
2008年第3期16-19,共4页
Science & Technology in Chemical Industry
基金
湖南省教育厅优秀青年科研基金(06B089)
