石油化工高等学校学报

石油化工高等学校学报 ›› 2011, Vol. 24 ›› Issue (6): 71-74.DOI: 10.3696/j.issn.1006-396X.2011.06.018

• 石油化工 • 上一篇    下一篇

离子液体磷钨酸盐的合成及其在酯化反应中的应用

张彦佳,吕振波,刘丹,桂建舟,江海英,许敏,孟祥巍,林赛燕   

  1. 辽宁石油化工大学化学与材料科学学院
  • 收稿日期:2011-11-04 出版日期:2011-12-25 发布日期:2011-12-25
  • 作者简介:张彦佳(1985-),女,辽宁沈阳市,在读硕士
  • 基金资助:
    教育部重点项目(209031);辽宁省高等学校优秀人才支持计划(LR201024);辽宁省自然基金(20102131; 201102120);辽宁省教育厅(2009A430;L2010243)

The Synthesis of Dodecatungstophosphate and Its Catalytic Application in Esterification

  1. College of Chemistry and Material Science, Liaoning Shihua University, Fushun Liaoning 113001,P.R.China
  • Received:2011-11-04 Published:2011-12-25 Online:2011-12-25

摘要: 以酸性离子液体和磷钨酸反应制成离子液体磷钨杂多酸盐, 并以它作为催化剂研究了乙醇和乙酸酯化生成乙酸乙酯的反应,考察了反应时间、反应温度、催化剂的物质的量及酸醇物质的量比等因素对此反应的影响。实验结果表明,在60 ℃,4 h,n(催化剂)/n(乙酸)/n(乙醇)=1∶30∶150的条件下,乙酸的收率为94%,乙酸乙酯的选择性为100%。反应结束后,产物和催化剂分层,通过简单的过滤即可分离。催化剂经真空干燥脱水后可重复使用4次,活性变化不大。

关键词: 磷钨酸盐 , 离子液体 , 酯化反应 , 乙酸乙酯

Abstract: Synthesis of tungstophosphate with organic cation from acidic ionic liquids and 12-tungstophosphoric acid was reported. And its catalytic application in the synthesis of ethyl acetate had also been investigated. The effect of reaction time, reaction temperature, catalyst amount and the molar ratio of acetic acid to ethanol were studied, and found that higher conversion of acetic acid (94%) and good selectivity to ethyl acetate (100%) can be obtained under the following conditions: 60 ℃, 4 h, n(catalyst)/n(acetic acid)/n(ethano1)=1∶30∶150. The catalyst was immiscible in the reaction system after reaction, providing a simple separation by decantation. The catalyst can be recycled for 4 times directly after vacuum drying without obvious loss in catalytic activity.

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引用本文

张彦佳,吕振波,刘丹. 离子液体磷钨酸盐的合成及其在酯化反应中的应用[J]. 石油化工高等学校学报, 2011, 24(6): 71-74.

ZHANG Yan-jia, LV Zhen-bo,LIU Dan,et al. The Synthesis of Dodecatungstophosphate and Its Catalytic Application in Esterification[J]. Journal of Petrochemical Universities, 2011, 24(6): 71-74.

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