环境友好催化剂HPA/ZrO_2-TiO_2的制备及催化性能研究  

Preparation and Catalytic Activity of Environmentally Friendly Catalyst HPA/ZrO_2-TiO_2

作　　者：张跃文[1] 任跃红[1] 董金龙[1] 

机构地区：[1]太原师范学院化学系,太原市黄陵路19号030031

出　　处：《光谱实验室》2009年第3期613-616,共4页Chinese Journal of Spectroscopy Laboratory

摘　　要：制备了新型负载型杂多酸HPA/ZrO2-TiO2环境友好催化剂,用IR、UV和XRD手段研究了其结构形态;并考察了催化剂对合成乙酸异丙酯的应用研究。结果表明,HPA/ZrO2-TiO2仍然保持着Keggin型阴离子的特征结构,HPA和ZrO2-TiO2之间存在着强烈的化学作用,对合成乙酸异丙酯有很好的催化活性;在最佳反应条件下,酯收率为93.5%,催化剂重复使用5次后酯收率仍高达90.5%。A new environmentally friendly catalyst, HPA/ZrO2-TiO2, for the isopropyl acetate was prepared, and were characterized with IR, UV and XRD techniques. The heteropolyacid HPA/ZrO2-TiO2 keep Keggin structure. A strong chemical interaction exists between HPA and ZrO2-TiO2 surface. It have high catalytic activity for synthesizing isopropyl acetate. Under optimum synthesis condition,the product yield is 94.2 %. As a result,after the catalyst was used repeatedly for five times,the product yield drop down to 90.5 %.

关 键 词：HPA/ZrO2-TiO2 环境友好催化剂 乙酸异丙酯 酯化反应 

分 类 号：O657.32[理学—分析化学] TQ426.91[理学—化学]