负载型固体碱催化合成亚苄基丙酮  

SYNTHESIS OF BENZALACETONE CATALYZED BY SOLID BASE CATALYSTS

作　　者：胡伟武[1,2] 杨琦[1] 李淼[1] 

机构地区：[1]中国地质大学(北京)水资源与环境学院,北京100083 [2]襄樊学院化学与生物科学系

出　　处：《精细石油化工》2005年第6期12-15,共4页Speciality Petrochemicals

基　　金：国家自然科学基金项目(40102027)。

摘　　要：研究了用固体碱 KOH/Al_2O_3催化合成苯叉丙酮,确定了合成的最佳工艺条件:n(苯甲醛)∶n(丙酮)=1∶4.催化剂用量2g,催化剂最佳负载量12mmol/g,反应温度40～45℃,反应时间为3h,产率达88%以上。Solid base, KOH/Al2O3, was applied as a catalyst in a condensation reaction, and showed advantages over liquid bases. It avoided polluting environment and eroding equipments in using liquid base. In the synthesis of benzalacetone, the yield was above 88% after 3 h. The optimal reaction conditions were established： n（benzaldehyde） ： n（acetone） = 1 ： 4, the amount of catalyst is 2 g, the best loadings of KOH in the catalyst is 12 mmol/g, reaction temperature is 40 - 45 ℃ and reaction time is 3 h.

关 键 词：亚苄基丙酮 固体碱 缩合反应 催化 

分 类 号：TQ244.2[化学工程—有机化工]