Reaction kinetics for synthesis of sec-butyl alcohol catalyzed by acid-functionalized ionic liquid

doi:10.1016/j.cjche.2014.11.009

Chin.J.Chem.Eng. ›› 2015, Vol. 23 ›› Issue (1): 106-111.DOI: 10.1016/j.cjche.2014.11.009

• CATALYSIS, KINETICS AND REACTION ENGINEERING • Previous Articles Next Articles

Reaction kinetics for synthesis of sec-butyl alcohol catalyzed by acid-functionalized ionic liquid

Ting Qiu, Wenli Tang, Chenggang Li, Chengming Wu, Ling Li

College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350108, China

Received:2013-11-13 Revised:2014-01-17 Online:2015-01-24 Published:2015-01-28
Contact: Ting Qiu
Supported by:
Supported by the New Century Excellent Talents in Fujian Province(JA12014) and the Natural Science Foundation for Distinguished Young Scholars of Fujian (2014J06004).

Reaction kinetics for synthesis of sec-butyl alcohol catalyzed by acid-functionalized ionic liquid

Ting Qiu, Wenli Tang, Chenggang Li, Chengming Wu, Ling Li

College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350108, China

通讯作者: Ting Qiu
基金资助:
Supported by the New Century Excellent Talents in Fujian Province(JA12014) and the Natural Science Foundation for Distinguished Young Scholars of Fujian (2014J06004).

Abstract

Abstract: The acid-functionalized ionic liquid ([HSO₃Pmim]HSO₄) was synthesized by a two-step method. Nuclear magnetic resonance (NMR) and Fourier transform infrared spectroscopy (FT-IR) showthat the synthesis method is feasible and high purity of ionic liquid can be obtained. Using [HSO₃Pmim]HSO₄ as the catalyst, we studied the reaction kinetics of synthesizing sec-butyl alcohol from sec-butyl acetate and methanol by transesterification in a high-pressure batch reactor. The effects of temperature, initial molar ratio of methanol to ester, and catalyst concentration on the conversion of sec-butyl acetate were studied. Based on its possible reaction mechanism, a homogeneous kineticmodelwas established. The results showthat the reaction heat ΔHis 10.94 × 10³ J·mol^-1, so the reaction is an endothermic reaction. The activation energies E_a+ and E_a- are 60.38 × 10³ and 49.44 × 10³ J·mol^-1, respectively.

Key words: Ionic liquids, sec-Butyl alcohol, Kinetic modeling, Transesterification

摘要： The acid-functionalized ionic liquid ([HSO₃Pmim]HSO₄) was synthesized by a two-step method. Nuclear magnetic resonance (NMR) and Fourier transform infrared spectroscopy (FT-IR) showthat the synthesis method is feasible and high purity of ionic liquid can be obtained. Using [HSO₃Pmim]HSO₄ as the catalyst, we studied the reaction kinetics of synthesizing sec-butyl alcohol from sec-butyl acetate and methanol by transesterification in a high-pressure batch reactor. The effects of temperature, initial molar ratio of methanol to ester, and catalyst concentration on the conversion of sec-butyl acetate were studied. Based on its possible reaction mechanism, a homogeneous kineticmodelwas established. The results showthat the reaction heat ΔHis 10.94 × 10³ J·mol^-1, so the reaction is an endothermic reaction. The activation energies E_a+ and E_a- are 60.38 × 10³ and 49.44 × 10³ J·mol^-1, respectively.

关键词: Ionic liquids, sec-Butyl alcohol, Kinetic modeling, Transesterification

Ting Qiu, Wenli Tang, Chenggang Li, Chengming Wu, Ling Li. Reaction kinetics for synthesis of sec-butyl alcohol catalyzed by acid-functionalized ionic liquid[J]. Chin.J.Chem.Eng., 2015, 23(1): 106-111.

Ting Qiu, Wenli Tang, Chenggang Li, Chengming Wu, Ling Li. Reaction kinetics for synthesis of sec-butyl alcohol catalyzed by acid-functionalized ionic liquid[J]. Chinese Journal of Chemical Engineering, 2015, 23(1): 106-111.

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Reaction kinetics for synthesis of sec-butyl alcohol catalyzed by acid-functionalized ionic liquid

Reaction kinetics for synthesis of sec-butyl alcohol catalyzed by acid-functionalized ionic liquid

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