纳米固体超强酸SO_4^(2-)/Fe_2O_3催化合成苯乙酮环乙二缩酮  

Synthesis of acetophenone cyclic ethylic ketal catalyzed by nanosolid superacid SO_4^(2-)/Fe_2O_3

作　　者：李家贵[1] 朱万仁[1] 韦庆敏[1] 

机构地区：[1]玉林师范学院化学与材料学院,广西玉林537000

出　　处：《工业催化》2012年第1期58-62,共5页Industrial Catalysis

基　　金：广西壮族自治区教育厅科研项目(200911MS198)

摘　　要：采用纳米固体超强酸SO42-/Fe2O3为催化剂,以苯乙酮和乙二醇为原料催化合成苯乙酮环乙二缩酮。优化了催化剂制备和反应条件,较适宜反应条件为:苯乙酮170 mmol,n(酮)∶n(醇)=1∶1.7,催化剂用量100 mg(占反应物总质量4.4%),(98～112)℃回流反应1.5 h,苯乙酮环乙二缩酮收率达94.2%。Acetophenone cyclic ethylic ketal was synthesized by using acetophenone and ethylene glycol as the raw materials and nanosolid superacid SO4/2-/Fe203 as the catalyst. The conditions of the catalyst preparation and condensation reaction were optimized. The results showed that the yield of acetophenone cylic ethylic ketal of 94.2% was attaind under the optimum reaction condition as follows ： acetophenone a- mount 170 mmol,acetophenone/ethylene glycol molar ratio 1：1.7 ,catalyst dosage 100 mg（4.4% of the total mass of the reactants）, reaction temperature （98 - 112） ℃ ,and reaction time 1.5 h.

关 键 词：催化化学 纳米固体超强酸 SO4/2-/Fe2O3 苯乙酮环乙二缩酮 缩合反应 

分 类 号：O623.36[理学—有机化学] O625.42[理学—化学]