固体超强酸SO_4^(2-)/Fe_2O_3-ZrO_2的声化学制备及其催化酯化性能  

Sonochemical preparation of SO_4^(2-)/Fe_2O_3-ZrO_2 solid superacid and its performance in catalytic esterification

作　　者：赵先锐[1] 张学富 陈同云[3] 

机构地区：[1]台州学院物理与电子工程学院,浙江台州317000 [2]浙江东发环保工程有限公司,浙江杭州311203 [3]安徽工业大学化学与化工学院,安徽马鞍山243002

出　　处：《工业催化》2008年第7期21-25,共5页Industrial Catalysis

摘　　要：采用超声共沉淀法制备SO42-/Fe2O3-ZrO2(SFZ)固体超强酸,用流动指示剂法测定其酸强度,通过BET及IR对其进行表征,并将样品用于催化乙酸和正丁醇的酯化反应。结果表明,超声共沉淀法制备的SO42-/Fe2O3-ZrO2固体超强酸比表面积及酸强度大(H0≤-16.0),催化活性高,样品表面与SO42-结合较牢固,重复使用时,催化活性变化不大。The SO^2-4/Fe2O3-ZrO2 solid superacid （SFZ） catalysts were prepared by co-precipitation under ultrasonic radiation. The acidity of SFZ catalysts were determined with flow indicator method. SFZ catalysts were characterized by BET and IR, and its performances in catalytic esterification of acetic acid and n-butyl alcohol were studied. The results showed that SFZ samples prepared by co-precipitation under ultrasonic radiation had larger specific surface area and stronger acidic strength（H0≤ -16.0）, higher catalytic activities, and its surface combined more firmly with SO^2-4 The catalytic activities of SFZ catalysts changed little during their repeated use.

关 键 词：催化化学 SO^2-4/Fe2O3-ZrO2 固体超强酸 共沉淀法 超声辐射 

分 类 号：O643.36[理学—物理化学] TQ426.6[理学—化学]