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Citation: YUE Cai-Bo, WEI Yun-yang, LU Min-Jie. Synthesis of Alkyl Acetate in Acidic Ionic Liquid [Hmim] HSO₄[J]. Chinese Journal of Applied Chemistry, ;2006, 23(11): 1282-1285. shu

Synthesis of Alkyl Acetate in Acidic Ionic Liquid [Hmim] HSO₄

1.
Institute of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094

Corresponding author: WEI Yun-yang,
Received Date: 11 November 2005
Available Online: 8 May 2006

A novel acidic ionic liquid,[Hmim] HSO₄,was prepared and used as solvent and catalyst in the esterification of acetic acid and alcohols.The esterification products could be easily separated in high yield from the reaction system via simple phase separation.The acidic ionic liquid phase after removal of water could be reused.The effect of reaction conditions on product yield for the esterification between acetic acid and n-Butanol was studied.Butyl acetate with a yield of 97% was obtained under optimal conditions.The acidic ionic liquid HSO₄ was recycled 5 times and the yield of butyl acetate did not decrease remarkably.The structure of the acidic ionic liquid [Hmim] HSO₄ was characterized by ¹H NMR,IR,and elemental analysis,and it was found that HSO₄ existed as monohydrate.Acidity determination of aquoes solutions of [Hmim] HSO₄ showed that [Hmim] HSO₄ possessed stronger acidity than CF₃COO.
- acidic ionic liquid,
- esterification,
- n-butyl acetate
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Synthesis of Alkyl Acetate in Acidic Ionic Liquid [Hmim] HSO4

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Synthesis of Alkyl Acetate in Acidic Ionic Liquid [Hmim] HSO₄