固体超强酸SO_4^(2-)/Fe_2O_3的制备及其催化性能的研究  

Study on preparation and catalytic activity of solid superacid SO_4^(2-)/Fe_2O_3

作　　者：李建伟[1] 周长智[1] 弓彦忠[1] 

机构地区：[1]河南工业大学化学化工系,河南郑州450052

出　　处：《应用化工》2005年第5期313-314,共2页Applied Chemical Industry

摘　　要：用(NH4)2SO4·Fe2(SO4)3·24H2O直接焙烧的方法制备了固体超强酸催化剂SO42-/Fe2O3,并以乙酸乙酯的合成反应考察了焙烧温度、焙烧时间对固体酸催化活性的影响。实验表明:最佳焙烧温度为550℃,最佳焙烧时间为4h。当催化剂用量为2g,醇酸物质的量比为1.6∶1,回流时间2h时,乙酸转化率为85.1%。Solid superacid catalyst of SO_4^(2-)/Fe_2O_3 was prepared by calcination of (NH_4)_2SO_4·(Fe_2(SO_4)_3·24H_2O), its catalytic activity was measured with esterification of ethyl acetate. The preparation conditions of SO_4^(2-)/Fe_2O_3 have been investigated, that is, the calcining temperature is 550℃, the calcining time is 4 h. When the catalyst is 2.0 g, the mole ratio of alcohol to acid is 1.6∶1, the reflux time is 2.0 h, the yield of esterification is 85.1%.

关 键 词：SO4^2-/FE2O3 催化性能 制备 FE2(SO4)3 (NH4)2SO4 固体超强酸催化剂 焙烧温度 焙烧时间 催化剂用量 物质的量比 合成反应 乙酸乙酯 催化活性 回流时间 固体酸 转化率 最佳 醇酸 

分 类 号：TQ414[化学工程] O643.36[理学—物理化学]