化工学报Issue(7)：2488-2497,10.DOI:10.11949/j.issn.0438-1157.20150131
功能化离子液体杂多酸盐催化丁二酸铵水溶液直接酯化
Heteropolyanion-based ionic liquids catalyze esterification of ammonium succinate in aqueous solution
摘要
Abstract
Propane sulfonate (PS) functionalized organic cations were combined with Keggin heteropolyanions to synthesize a series of sulfonated organic heteropolyacid salts (HPA-ILs). Their structures were characterized by FT-IR and elemental analyses (C, H, N). These catalysts were applied to directly catalyze the esterification of ammonium succinate with 1-butanol in aqueous solution. Compared with HPAs, H2SO4, [MIMPS]HSO4 and Nafion®NR-50 resins, HPA-ILs exhibited excellent catalytic activities. Finally, the excellent catalyst [MIMPS]3PMo12O40 was selected to investigate systemically the reaction conditions. The optimization of the reaction conditions was ammonium succinate concentration 50% (mass), catalyst dosage 1.0% (based on ammonium succinate), n(1-butanol):n(ammonium succinate)=5:1, reaction time 12 h, reaction temperature 130℃and vacuum degree 0.02 MPa. The highest yield of esters could reach 89.7%. After reusing 6 times the catalyst still showed the superior catalytic performance with yield of above 85%.关键词
离子液体/杂多酸盐/功能化/催化/丁二酸铵水溶液/酯化Key words
ionic liquids/heteropolyacid salts/functionalized/catalysis/ammonium succinate aqueous solution/esterification分类
化学化工引用本文复制引用
张锋,梁金花,胡曦,王俊格,陈刘龙,任晓乾,姜岷..功能化离子液体杂多酸盐催化丁二酸铵水溶液直接酯化[J].化工学报,2015,(7):2488-2497,10.基金项目
国家高技术研究发展计划项目(2014AA021205)；江苏高校优势学科建设工程资助项目(PAPD)。 （2014AA021205）
