Worm-like分子筛负载磷钨钼酸催化合成乙酸异戊酯  

Synthesis of iso-amyl acetate catalyzed by worm-like molecular sieve supported phospho-tungstic-molybdic acid

作　　者：王月林[1] 徐玲[1] 徐莉[1] 段莉梅[1] 刘宗瑞[1] 

机构地区：[1]内蒙古民族大学化学化工学院,内蒙古通辽028043

出　　处：《分子科学学报》2014年第4期287-292,共6页Journal of Molecular Science

基　　金：国家自然科学基金资助项目(21261014);内蒙古自然科学基金资助项目(2012MS0207);内蒙古研究生科研创新资助项目

摘　　要：以Worm-like介孔分子筛为载体,通过浸渍的方法将磷钨钼酸负载到分子筛的孔道内,制备负载型磷钨钼酸催化剂,并采用XRD、N2-吸附脱附、红外光谱等方法对负载型催化剂进行表征.将负载型磷钨钼酸催化剂应用于乙酸异戊酯合成反应,考察乙酸与异戊醇物质的量比、反应时间、环己烷用量、负载型催化剂用量及磷钨钼酸负载量等因素对酯化率的影响和负载型催化剂的重复使用性能.结果表明,用负载型磷钨钼酸催化剂催化合成乙酸异戊酯的效果很好,酯化率可达92.8%,且负载型催化剂的重复使用性良好.The supported phospho-tungstic-molybdic acid catalysts were prepared by loading phosphotungstic-molybdic acid on the Worm-like mesporous carrier via the impregnation method.The catalysts were characterized by XRD,FT-IR and N2adsorption-desorption.The iso-amyl acetate was synthesized by supported phospho-tungstic-molybdic acid as the catalyst.The effects of reaction parameters such as n（acetic acid）∶n（iso-amyl alcohol）,reaction time,the dosage of cyclohexane and supported catalyst,loading amounts of phospho-tungstic-molybdic acid on the esterification rate and the reuse performance of supported catalyst were studied.The results showed that esterification rate was up to 92.8% when the supported phospho-tungstic-molybdic acid catalyst was used under the optimal conditions.In addition,the supported catalyst has good reproductively.

关 键 词：负载 磷钨钼酸 乙酸异戊酯 催化剂 

分 类 号：O611[理学—无机化学]