Catalytic performance of sulfonic acid functionalized ionic liquids on preparation of biodiesel

甄彬1; 2

doi:10.3969/j.issn.0438-1157.2011.z2.013

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Catalytic performance of sulfonic acid functionalized ionic liquids on preparation of biodiesel

更新时间：2025-12-10

- Catalytic performance of sulfonic acid functionalized ionic liquids on preparation of biodiesel
- CIESC Journal Issue S2, Pages: 80-84(2011)
- 作者机构：
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- DOI：10.3969/j.issn.0438-1157.2011.z2.013
  CLC： Q426
- Online First：20 December 2011，
  
  Published：20 December 2011
- 稿件说明：
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甄彬1, 2. Catalytic performance of sulfonic acid functionalized ionic liquids on preparation of biodiesel[J]. CIESC Journal, 2011, (S2): 80-84.
DOI：

甄彬1, 2. Catalytic performance of sulfonic acid functionalized ionic liquids on preparation of biodiesel[J]. CIESC Journal, 2011, (S2): 80-84. DOI： 10.3969/j.issn.0438-1157.2011.z2.013.

摘要

通过1-烯丙基咪唑与1

4-丁基磺酸内酯反应制备的两性离子分别与硫酸、三氟甲基磺酸、磷钨酸、磷钼酸和硅钨酸直接反应制备了5种磺酸功能化离子液体。采用1H NMR、FTIR、TG/DTA等技术手段对其结构及热稳定性进行了表征。最后通过催化油酸与甲醇酯化反应制生物柴油过程对催化剂的催化活性和重复使用性进行了评价。结果表明，5种离子液体均具有高催化活性（高于浓硫酸），并且重复使用4次后，催化活性基本保持不变。3种杂多酸离子液体不溶于产物，以固态形式与产物混合，为其回收和重复利用提供了有利条件。

Abstract

Five sulfonic acid functionalized ionic liquids were designed and synthesized in order to explore catalysts with high catalytic activity and easy separation for synthesis of biodiesel. First

zwitterion was obtained through reaction between 1-allyl-imidazolium and 1

4-butane sultone. Second

sulfonic acid functionalized ionic liquids were synthesized by direct reaction of zwitterion with H2SO4

CF3SO3

H3PW12O40

H3PMo12O40 and H4SiW12O40 respectively. 1H NMR

FTIR and TG/DTA were used to study structure and thermal stability of ionic liquids. The process of catalytic esterification reaction between oleic acid and methanol was used for investigation catalytic activity and reusability of various sulfonic acid functionalized ionic liquids. The result showed that all kinds of ionic liquids had high activity ( higher than that of H2SO4 ) and their catalytic activity keep unchanged after four cycles. Three kinds of heteropoly acids based ionic liquids did not dissolve with products

and mixed with products in the state of solid after removal of excessive methanol. The property made them more convenient in separation.

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