高校化学工程学报2011，Vol.25Issue(3)：519-523,5.
Brφnsted酸性功能化双核离子液体制备及催化合成醋酸丁酯研究
Synthesis and Application of Functional Brpnsted Acid Binuclear Ionic Liquid
摘要
Abstract
A functional Brpnsted acid binuclear imidazole ionic liquid catalyst was synthesized by a two-step proceeding and its structure was characterized by 1H-NMR and FT-IR, respectively. The catalytic performance of the prepared ionic liquid catalyst used in the synthesizing butyl acetate by esterification of acetic acid and butyrate with high selectivity was systematically investigated. The results show that the prepared functional Brpnsted acid binuclear imidazole ionic liquid has perfect catalytic activity which is closely related to the kinds of active anions in it. It was found that the bis-(3-methyl-l-imidazole)butylidene double bisulfate (MTEIMHS)has the best catalytic activity, and under the optimal operation conditions found (catalyst used dosage 1.6 (wt),reaction temperature 90℃ and time 4 h), the conversion ratio of acetic acid can reach 82 and the selectivity is near up to 99.9 . It was confirmed that the MTEIMHS binuclear ionic liquid is expected to be a kind of potential catalyst for esterification.关键词
双核离子液体/Brφnsted酸/酯化反应/醋酸丁酯Key words
binuclear imidazole ionic liquid/ Brpnsted/ esterification/ butyl acetate分类
化学化工引用本文复制引用
梁金花,徐玥,任晓乾,姜岷,李振江..Brφnsted酸性功能化双核离子液体制备及催化合成醋酸丁酯研究[J].高校化学工程学报,2011,25(3):519-523,5.基金项目
"863"重大项目(2007AA06A402). （2007AA06A402）
