化工进展2009，Vol.28Issue(11)：1941-1945,5.
溶胶-凝胶法负载离子液体[hnmp]HSO_4催化剂在酯化反应中的应用
Silica-gel-supported ionic liquid [hnmp]HSO_4 as a catalyst for esterification reaction
摘要
Abstract
Bronsted acidic ionic liquid N-methyl pyrrolidonium hydrosulfate ([hnmp]HSO_4) was immobilized in silica gel by sol-gel method. The silica-gel-supported ionic liquid catalyst (SILC) was used as a new kind of cheap and accessible catalyst in esterification reactions. Without dehydrant, the yield of butyl acetate reaches to 69 %, and the turnover frequency (TOF) is 1350 h~(-1). After the SILC was recycled for 8 times , the ester yield of the reaction was basically similar to that obtained with the freshly prepared catalyst According to the analysis of TG-IR, about 7 % ionic liquid was strongly adsorbed in silica-gel. The products separation using SILC was convenient. It is presumed that the SILC can be used in the fixed-bed process.关键词
离子液体/硅胶负载/溶胶-凝胶法/酯化反应/催化剂Key words
ionic liquids/ silica-gel-supported/ sol-gel/ esterification/ catalyst分类
化学化工引用本文复制引用
劳锡寮,方岩雄,周蓓蕾,黄宝华,张煜..溶胶-凝胶法负载离子液体[hnmp]HSO_4催化剂在酯化反应中的应用[J].化工进展,2009,28(11):1941-1945,5.基金项目
国家自然科学基金(20376015)、广东省自然科学基金(32491)及广州市科技计划(2004J1-C0151)资助资助. （20376015）
