SO_4^(2-)/ZrO_2固体超强酸的制备及催化性能  

Preparation and Catalytic Properties of SO_4^(2-)/ZrO_2 Solid Superacid

作　　者：郑云天[1] 位艳宾[1,2] 徐庆茹 郭洁[1] 张晴[1] ZHENG Yun-tian;WEI Yan-bin;XU Qing-ru;GUO Jie;ZHANG Qing(School of Chemical Engineering, Xuzhou College of Industrial Technology, Xuzhou 221140, China;School of Chemical Engineering & Technology, China University of Mining & Technology, Xuzhou 221116, China)

机构地区：[1]徐州工业职业技术学院化学工程学院,江苏徐州221140 [2]中国矿业大学化工学院,江苏徐州221116

出　　处：《化工技术与开发》2016年第7期7-10,共4页Technology & Development of Chemical Industry

基　　金：江苏省大学生实践创新计划训练项目(201513107012Y);徐州工业职业技术学院科技计划基金项目(XGY201411)

摘　　要：采用沉淀浸渍法制备了SO_4^(2-)/ZrO_2固体超强酸催化剂,利用Hammett指示剂、红外光谱仪和粉末X射线衍射仪对其进行表征。以乙酸正丁酯的合成为探针反应,考察硫酸浸渍浓度、焙烧时间和焙烧温度对其催化活性的影响。结果表明,SO_4^(2-)/ZrO_2固体超强酸具有较好的催化活性,当硫酸浸渍浓度为1.0mol·L^(-1)、焙烧温度为600℃、焙烧时间为3h时,SO_4^(2-)/ZrO_2超强酸的催化活性最高,酯化反应的酯化率达到97%。SO42-/ZrO2 solid superacid catalyst was prepared by introduction of ZrO2 with precipitation-impregnation method.The prepared SO42-/ZrO2 were characterized by Hammett indicator, XRD and FT-IR. The effects of impregnation concentration,calcinations temperature and calcinations time on the catalytic performance of SO42-/ZrO2 were investigated. The results showedthat SO42-/ZrO2 exhibited the best catalytic activity for esterification of n-butanol and acetic acid (up to 95%) prepared by 1 mol/Limpregnation concentration of H2SO4 and 600℃ calcinations temperature for 3h.

关 键 词：固体超强酸 SO42-/ZrO2 酯化反应 

分 类 号：O643.36[理学—物理化学]