【作者】 刘仕伟； 宋英杰； 于世涛； 刘福胜； 解从霞；

【Author】 LIU Shiwei1,2 , SONG Yingjie3, YU Shitao2*, LIU Fusheng2, XIE Congxia4(1.Institute of Chemical Industry of Forest Products of Chinese Academy of Forestry,Key and Open Lab on Forest Chemical Engineering of State Forestry Administration, Nanjing 210042,Jiangsu,China;2.College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042,Shandong,China; 3.Shandong Hi-tech Chemical Group, Dongying 257105, Shandong,China; 4.College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong,China)

【机构】 中国林业科学研究院林产化学工业研究所国家林业局林产化学工程重点开放性实验室； 山东海科化工集团； 青岛科技大学化工学院； 青岛科技大学化学与分子工程学院；

【摘要】 制备和表征了酸功能化聚醚离子液体1-(3-磺酸)丙基-3-聚氧乙烯醚基咪唑磷酸二氢盐-[HSO3-(CH2)3-im-(CH2CH2O)nH]H2PO4,并用于催化合成乙酸松油酯的反应,考察了反应时间、反应温度、原料配比和催化剂用量等因素对反应的影响。在n(松油醇)∶n(乙酸酐)=1∶1.5,松油醇5.1g、离子液体1.5g、反应温度40℃和反应时间8h条件下,松油醇转化率超过99.5%,乙酸松油酯的选择性为87.8%;并对离子液体的重复使用性能进行了考察,表明离子液体不经处理直接重复使用6次后,松油醇的转化率为99.4%,乙酸松油酯的选择性为88.3%,具有较好的重复使用性能。更多还原

【Abstract】 An acidic functional polyether ionic liquid, 1-(3-sulfonic group)propyl-3-polyoxyethyleneimidazole dihydrogen phosphate ([HSO3-(CH2)3-im-(CH2CH2O)nH]H2PO4 ), was synthesized and used to catalyze the esterification of terpineol with acetic anhydride. The effects of reaction condition,i.e.,reaction temperature, reaction time, n(terpineol)∶n(acetic anhydride) and amount of acidic functional ionic liquid, were investigated. The optimum condition for the esterification was obtained as follows: n(terpineol)∶n(acetic anhydride)=1∶1.5,terpineol 5.1 g, ionic liquid 1.5 g, reaction temperature 40 ℃, reaction time 8 h. Terpineol conversion of over 99.5% and selectivity to terpinyl acetate of 87.8 % were obtained under the optimum condition.Recyclability of the ionic liquid was also investigated. Terpineol conversion of 99.4% and the selectivity to terpinyl acetate of 88.3% were attainable after the ionic liquid was used for six times.更多还原