掺钴固体超强酸SO_4^(2-)/SnO_2的制备和结构表征  

Preparation and characterization of Co doped SO_4^(2-)/SnO_2 solid superacid

作　　者：郭海福[1] 陈少峰[1,2] 闫鹏[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,内蒙古呼和浩特010051

出　　处：《化学研究与应用》2010年第6期678-682,共5页Chemical Research and Application

基　　金：广东省自然科学基金资助项目(7010338);肇庆市科技计划项目(2008G004)

摘　　要：掺杂钴对固体超强酸SO42-/SnO2进行改性,将其应用于乙酸和正丁醇的酯化反应,考察制备条件(钴离子浓度和焙烧温度)对催化性能的影响,发现引入一定浓度的钴离子能提高催化剂在酯化反应中的活性,在焙烧温度为500℃时,催化剂具有较高的活性;利用傅里叶红外光谱、X射线衍射、热重差热分析等测试手段对催化剂酸性、晶型和活性组分含量进行研究。Solid superacid SO42-/SnO2 was modified by Co via impregnation and deposition method.The catalytic performance of the prepared superacid catalyst was evaluated by esterification of acetic acid and n-butanol,The results showed the existence of Co significantly improved the catalytic activity of solid superacid,when calcining temperature was 500℃,the catalyst had the highest activity.Furthermore,the physicochemical properties of the materials were characterized by FT IR,XRD,and TG-DTA.

关 键 词：固体超强酸SO42-/SnO2 钴 制备 表征 

分 类 号：O611.4[理学—无机化学]