稀土固体超强酸Ce^(4+)-SO_4^(2-)/SnO_2-Nd_2O_3微乳法制备及表征  

Preparation and Characterization of Rare Earth Solid Super Acid Catalyst Ce^(4+)-SO_4^(2-)/SnO_2-Nd_2O_3 by Microemulsion Method

作　　者：郭海福[1] 陈志胜[1,2] 闫鹏[1] 郝向英[1] 

机构地区：[1]肇庆学院化学化工学院,广东肇庆526061 [2]内蒙古工业大学化工学院,内蒙古呼和浩特010051

出　　处：《稀土》2011年第4期55-59,共5页Chinese Rare Earths

基　　金：广东省自然科学基金项目(7010338);广东省肇庆市科技计划项目(2008G004);广东肇庆市科技计划项目(2009G013)

摘　　要：采用OP-10/正丁醇/环己烷微乳体系制备出新型固体超强酸Ce^(4+)-SO_4^(2-)/SnO_2-Nd_2O_3。以乙酸正丁酯合成为探针反应。得出Ce^(4+)-SO_4^(2-)/SnO_2-Nd_2O_3的优化制备条件:R=65:100(表面活性剂:水溶液),Ce(SO_4)_2·4H_2O占8%,Nd_2O_3加入量为8%,陈化时间12 h,浸渍浓度3 mol/L,焙烧温度550℃,焙烧时间3 h。并采用XRD、FTIR、TG-DTA和SEM表征技术对该催化剂的结构进行研究。A new type of rare earth solid superacid catalyst Ce4＋-SO42-/SnO2-Nd2O3 was prepared by microemulsion method in OP-10/n-butanol/cyclohexane system. The catalytic performance of the prepared catalyst was evaluated by esterification of acetic acid and n-butanol. The optimum conditions for the preparation of solid superacid Ce4＋-SO42-/SnO2-Nd2O3 are mass ratio between surfactant and solution 65： 100, content of Ce（SO4）2·4H2O 8%, content of Nd2O38%, aging time 12 h,concentration of impregnating solution 3 mol/L, calcining temperature 550℃ and Calcining time 3 h. And the physicchemical properties of the materials were characterized by XRD, FTIR, TG-DTA and SEM.

关 键 词：稀土 微乳法 固体超强酸 制备 表征 

分 类 号：O611.4[理学—无机化学] O643.36[理学—化学]