Synthesis of succinic acid diisopropyl ester catalyzed by Lewis acid ionic liquids

ZHAO Dishun; GE Jingjing; ZHAI Jianhua; ZHANG Juan; LIU Mengshuai; LI Junpan

doi:10.3969/j.issn.0438-1157.2014.02.028

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Synthesis of succinic acid diisopropyl ester catalyzed by Lewis acid ionic liquids

更新时间：2025-12-10

- Synthesis of succinic acid diisopropyl ester catalyzed by Lewis acid ionic liquids
- CIESC Journal Issue 2, Pages: 561-569(2014)
- 作者机构：
  
  河北科技大学化学与制药工程学院,河北,石家庄,050018
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2014.02.028
  CLC： TQ032.4}
- Online First：05 February 2014，
  
  Published：05 February 2014
- 稿件说明：
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ZHAO Dishun, GE Jingjing, ZHAI Jianhua, et al. Synthesis of succinic acid diisopropyl ester catalyzed by Lewis acid ionic liquids[J]. CIESC Journal, 2014, (2): 561-569.
DOI：

ZHAO Dishun, GE Jingjing, ZHAI Jianhua, et al. Synthesis of succinic acid diisopropyl ester catalyzed by Lewis acid ionic liquids[J]. CIESC Journal, 2014, (2): 561-569. DOI： 10.3969/j.issn.0438-1157.2014.02.028.

摘要

采用两步法制备了9种不同的Lewis酸性离子液体，采用1H NMR、FT-IR对离子液体的结构进行了表征，并系统地考察了其对丁二酸和异丙醇酯化反应的催化性能。结果表明，离子液体随着卤化物用量增加表现出更强的酸性。其中[Bmim]Br-Fe2Cl6催化合成丁二酸二异丙酯效果良好，催化剂用量为丁二酸质量的10.0%，反应温度100℃，反应时间4 h，酸醇摩尔比为1：5，丁二酸二异丙酯收率为88.9%，酯化率达92.7%。离子液体重复使用6次后，产品收率下降1.7%。

Abstract

Nine kinds of different Lewis acid ionic liquids were synthesized by two-step process and their structures were characterized with 1H NMR and FT-IR. Lewis acid ionic liquids prepared were used to catalyze the esterification reaction of succinic acid and isopropyl alcohol. With the increase of dosage of halide

the ionic liquids showed stronger acidity. [Bmim]Br-Fe2Cl6 had the best catalytic performance

and optimal conditions for the synthesis of succinic acid diisopropyl ester were obtained as follows

amount of catalyst 10.0%（g/g）of succinic acid

reaction temperature 100℃ and reaction time 4 h

succinic acid and isopropyl alcohol ratio 1:5. Under the optimal conditions

the yield of succinic acid diisopropyl ester was up to 88.9%

esterification rate was 92.7%.The catalyst was recycled 6 times

and the yield of succinic acid diisopropyl ester only decreased by 1.7%.

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