详细信息
酸性离子液体催化脂肪酸甲酯聚合制备二聚酸甲酯 ( SCI-EXPANDED收录 EI收录) 被引量:17
Polymerization of Fatty Acid Methyl Ester Using Acidic Ionic Liquid as Catalyst
文献类型:期刊文献
中文题名:酸性离子液体催化脂肪酸甲酯聚合制备二聚酸甲酯
英文题名:Polymerization of Fatty Acid Methyl Ester Using Acidic Ionic Liquid as Catalyst
作者:刘仕伟[1] 李露[1] 于世涛[1] 解从霞[2] 刘福胜[1] 宋湛谦[1,3]
第一作者:刘仕伟
通信作者:Liu, SW[1]
机构:[1]青岛科技大学化工学院;[2]青岛科技大学化学与分子工程学院;[3]中国林业科学研究院林产化学工业研究所
年份:2010
卷号:31
期号:12
起止页码:1433-1438
中文期刊名:催化学报
外文期刊名:Chinese Journal of Catalysis
收录:CSTPCD;;EI(收录号:20105213522231);Scopus(收录号:2-s2.0-78650487541);WOS:【SCI-EXPANDED(收录号:WOS:000289321900003)】;北大核心:【北大核心2008】;CSCD:【CSCD2011_2012】;
基金:国家自然科学基金(30571463);山东省博士基金(BS2010NJ006)
语种:中文
中文关键词:酸性离子液体;生物柴油;脂肪酸甲酯;聚合;二聚酸甲酯
外文关键词:acidic ionic liquid; biodiesel; fatty acid methyl ester; polymerization; dimeric acid methyl ester
分类号:O643
摘要:以Brnsted-Lewis酸性离子液体为催化剂,用于催化生物柴油中不饱和脂肪酸甲酯聚合制备二聚酸甲酯反应,考察了催化剂种类、催化剂用量、反应温度和时间等因素对聚合反应性能的影响,得到较佳的反应条件.结果表明,当以1-(3-磺酸)-丙基-3-甲基咪唑氯锌酸盐[HO3S-(CH2)3-mim]Cl-ZnCl2(ZnCl2摩尔分数为0.67)为催化剂,生物柴油15g,m(生物柴油):m(离子液体)=15:1,于240oC下反应6h时,二聚酸甲酯收率为63.2%,其中三聚体含量小于5%.另外,该催化剂重复使用5次后,二聚酸甲酯收率仍超过63%,表明其具有较好的重复使用性能.离子液体的Brnsted和Lewis酸位的协同效应显著提高了其催化活性.
The polymerization of fatty acid methyl ester was investigated using biodiesel as the feed in the presence of a Brnsted-Lewis acidic ionic liquid (IL). A synergetic effect of Brnsted and Lewis acid sites enhanced the catalytic performance of the IL. 1-(3-Sulfonic acid)-propyl-3-methylimidazole chlorozincinate ([HO3S-(CH2)3-mim]Cl-ZnCl2,molar fraction of ZnCl2 was 0.67) was an efficient catalyst for the polymerization. The effects of catalyst amount,reaction temperature,and reaction time were investigated. The optimum conditions for the polymerization were:biodiesel 15 g,m(biodiesel):m(IL) = 15:1,reaction temperature 240 oC,and reaction time 6 h,which gave 63.2% yield of dimeric acid methyl ester. The reusability of the IL was good and after it was used five times,the dimeric acid methyl ester yield was still 63%.
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