SCI和EI收录∣中国化工学会会刊

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   

  1. 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   

  1. 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: 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 Ea+ and Ea- 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 Ea+ and Ea- are 60.38 × 103 and 49.44 × 103 J·mol-1, respectively.

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