| 酸性离子液体[Emim]HSO4催化合成丁二酸二乙酯 |
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| 引用本文： | 吕栓起,顾秀波,张明路,王鹏.酸性离子液体[Emim]HSO4催化合成丁二酸二乙酯[J].河北工业科技,2013,30(3):138-142,178. |
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| 作者姓名： | 吕栓起 顾秀波 张明路 王鹏 |
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| 作者单位： | 石家庄威远设备安装有限公司;秦皇岛秦冶重工有限公司;河北科技大学理学院;中山大学化学与化工学院 |
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| 摘 要： | 采用两步法合成并表征了酸性离子液体Emim]HSO4,并用于催化合成丁二酸二乙酯,考察了醇酸物质的量比、反应时间、反应温度、催化剂用量对酯收率的影响。其最佳工艺条件如下:n(乙醇)∶n(丁二酸)=3∶1、反应温度为70℃、反应时间为4h、催化剂用量为总质量的5%。在此最佳反应条件下酯收率可达75.02%。考察了酸性离子液体重复使用性能,离子液体重复使用7次后,催化活性基本不变。
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| 关 键 词： | 酸性离子液体 丁二酸二乙酯 催化 酯化 |
Synthesis of diethyl succinate with ionic liquids [Emim]HSO_4 as catalyst |
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| LYU Shuanqi,GU Xiubo,ZHANG Minglu and WANG Peng.Synthesis of diethyl succinate with ionic liquids [Emim]HSO_4 as catalyst[J].Hebei Journal of Industrial Science & Technology,2013,30(3):138-142,178. |
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| Authors: | LYU Shuanqi GU Xiubo ZHANG Minglu and WANG Peng |
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| Institution: | 1.Shijiazhuang Weiyuan Industrial Equipment Installation Company Limited,Shijiazhuang Hebei 052260,China;2.Qinhuangdao Qinye Heavy Industry Group Company Limited,Qinhuangdao Hebei 066318,China;3.School of Science,Hebei University of Science and Technology,Shijiazhuang Hebei 050018,China;4.School of Chemistry and Chemical Engineering,Sun Yat-sen University,Guangzhou Guangdong 510275,China) |
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| Abstract: | The acidic ion liquids Emim]HSO4 is synthesized by two-step method.Diethyl succinate is synthesized with the acid ionic liquids as catalyst.The effects of the reaction conditions on the yield of diethyl succinate such as raw material ratio,reaction time,reaction temperature,and amount of catalyst are examined in detail.The results show the optimal conditions as follows : ethanol and succinate molar ratio is 3∶1,reaction temperature is 70℃,reaction time is 4h and catalyst is 5 percent of total mass.The yield of diethyl succinate is 75.02%.The ionic liquid is reused for 7 times,and its catalytic activity quality is almost unchanged. |
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| Keywords: | ionic liquids diethyl succinate catalysis esterification |
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