Synthesis of n-butyl acetate by ether-functionalized ionic liquid

doi:10.11949/j.issn.0438-1157.20161017

CIESC Journal ›› 2017, Vol. 68 ›› Issue (1): 136-145.DOI: 10.11949/j.issn.0438-1157.20161017

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Synthesis of n-butyl acetate by ether-functionalized ionic liquid

HU Tiantian¹, ZHAO Dishun¹, WU Yu¹, ZHANG Shuanli², HU Shihai², ZHAI Jianhua¹

1 College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, Hebei, China;
2 Shijiazhuang XinyuSanyang Industrial Co., Ltd., Shijiazhuang 051430, Hebei, China

Received:2016-07-20 Revised:2016-10-12 Online:2017-01-05 Published:2017-01-05
Contact: 10.11949/j.issn.0438-1157.20161017
Supported by:
supported by the National Natural Science Foundation of China (20576026, 21106032) and the Shijiazhuang Science Technology Research and Development Program(161070251A)。

醚基功能化离子液体催化合成乙酸正丁酯

胡甜甜¹, 赵地顺¹, 武宇¹, 张拴力², 扈士海², 翟建华¹

1 河北科技大学化学与制药工程学院, 河北石家庄 050018;
2 石家庄新宇三阳实业有限公司, 河北石家庄 051430

通讯作者: 赵地顺
基金资助:
国家自然科学基金项目（20576026，21106032）；石家庄市科学技术研究与发展计划资助项目（161070251A）。

Abstract

Abstract:

Five ether-functionalized ionic liquids(ILs), containing[Me(OEt)₁-MOR-C₃SO₃H][MeSO₃], [Me(OEt)₂-MOR-C₃SO₃H][MeSO₃], [Me(OEt)₃-MOR-C₃SO₃H][MeSO₃], [2(C₃SO₃H-MOR)-(OEt)₂₀₀][2MeSO₃]and[2(C₃SO₃H-MOR)-(OEt)₄₀₀][2MeSO₃] were synthesized and characterized by the Fourier transform infrared spectrometer and nuclear magnetic resonance spectrometer.The ionic liquid viscosity, solubility and corrosion were investigated.The promotion effect of ether-functionalized ILs in esterification of acetic acid with butyl alcohol was investigated and the reaction process was optimized using response surface analysis.The yield of n-butyl acetate was up to 97.8% under the optimized conditions:response surface analysis(RSA) of n(CH₃COOH):n(C₄H₉OH)=1.2:1, the mass of catalyst[2(C₃SO₃H-MOR)-(OEt)₄₀₀][2MeSO₃]was 5% of the quality of butyl alcohol, the mass of water carrying agent was 30% of the quality of butyl alcohol, temperature was 90℃, and reaction time was 5 h.The catalysts could be recycled for 8 times without obviously decline of catalytic activity.

Key words: ether-functionalized, morpholine, ionic liquid, catalysis, esterification, RSA

摘要：

合成了5种醚基功能化酸性离子液体[Me（OEt）₁-MOR-C₃SO₃H][MeSO₃]、[Me（OEt）₂-MOR-C₃SO₃H][MeSO₃]、[Me（OEt）₃-MOR-C₃SO₃H][MeSO₃]、[2（C₃SO₃H-MOR）-（OEt）₂₀₀][2MeSO₃]、[2（C₃SO₃H-MOR）-（OEt）₄₀₀][2MeSO₃]，使用红外光谱和核磁共振氢谱对合成的离子液体结构进行表征，考察离子液体的黏度、溶解性和腐蚀性。以正丁醇和乙酸的酯化反应考察了离子液体的催化活性，并使用响应面分析法优化反应工艺。结果表明，当酸醇摩尔比为1.2：1、催化剂[2（C₃SO₃H-MOR）-（OEt）₄₀₀][2MeSO₃]用量为醇质量的5%、带水剂用量为醇质量的16%时，在90℃下反应5 h，酯收率可达97.8%，离子液体经回收干燥重复使用8次催化活性没有明显的降低。

关键词: 醚基功能化, 吗啡啉, 离子液体, 催化, 酯化, 响应面

CLC Number:

O643.32

HU Tiantian, ZHAO Dishun, WU Yu, ZHANG Shuanli, HU Shihai, ZHAI Jianhua. Synthesis of n-butyl acetate by ether-functionalized ionic liquid[J]. CIESC Journal, 2017, 68(1): 136-145.

胡甜甜, 赵地顺, 武宇, 张拴力, 扈士海, 翟建华. 醚基功能化离子液体催化合成乙酸正丁酯[J]. 化工学报, 2017, 68(1): 136-145.

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Synthesis of n-butyl acetate by ether-functionalized ionic liquid

醚基功能化离子液体催化合成乙酸正丁酯

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