酸性离子液体合成及其催化合成 柠檬酸三乙酯的研究

›› 2009, Vol. 43 ›› Issue (4): 15-20.

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Synthesis of Acidic Ionic Liquids and Their Application in Activity for Catalytic Synthesis of Triethyl Citrate

LI Jing, JIANG Jian-chun, XU Jun-ming, LI Xue-yao

Institute of Chemical Industry of Forestry Products, CAF;National Engineering Lab. for Biomass Chemical Utilization;Key Laboratory on Forest Chemical Engineering, SFA, Nanjing 210042, China

Received:2009-05-27 Revised:1900-01-01 Online:2009-07-30 Published:2009-07-30

Abstract

Abstract: Six acidic ionic liquid catalysts were synthesized and characterized by FT-IR and ¹HNMR spectra. Triethyl citrate was synthesized by catalysis of the acidic ionic liquids. The optimum conditions were obtained as follows:n(ethanol):n(citrate)6:1, catalyst amount was 15% (mass fraction), ethanol was added in 3 times, and reaction time was 2 h. It was found that acidic functional ionic liquid [HSO₃-bPydin]⁺[HSO₄]^- was of better catalytic activity and reuse performance. The catalyst was reused for 23 times, and the conversion of carboxyl was 98%. The structure of triethyl citrate product was characterized by FT-IR and ¹HNMR spectra.

Key words: triethyl citrate, ionic liquid, catalysis, esterification

CLC Number:

TQ42

LI Jing;JIANG Jian-chun;XU Jun-ming;LI Xue-yao. Synthesis of Acidic Ionic Liquids and Their Application in Activity for Catalytic Synthesis of Triethyl Citrate[J]. , 2009, 43(4): 15-20.

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Synthesis of Acidic Ionic Liquids and Their Application in Activity for Catalytic Synthesis of Triethyl Citrate

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