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Transesterification of Methyl Acetate with n-Butanol Catalyzed by Single and Mixed Ionic Liquids

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Abstract

Several acidic ionic liquids (ILs) with different cations and anions were used as catalysts in the transesterification of methyl acetate with n-butanol. The IL [omim][PF6] can enhance the catalytic activity of the partially soluble IL catalyst. The kinetics for the transesterification using the catalysts [HSO3bmim][p-TS] and [HSO3bmim][OTF] were measured. The ideal homogeneous model and the nonideal homogeneous (NIH) model were used to correlate the kinetic data. The NIH model was more reliable to describe the reaction rate.

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Abbreviations

IL:

Ionic liquid

MRD:

Mean relative deviation

BuOH:

n-Butanol

MeOAc:

Methyl acetate

[HSO3bmim][Cl]:

1-Sulfobutyl-3-methylimidazolium chloride

[HSO3bmim][OTF]:

1-Sulfobutyl-3-methylimidazolium trifluoromethanesulfonate

[HSO3bmim][p-TS]:

1-Sulfobutyl -3-methylimidazolium tosylate

[HSO3bpy][OTF]:

N-sulfobutylpyridinium trifluoromethanesulfonate

[HSO3bHim][HSO4]:

1-Sulfobutylimidazolium hydrogensulfate

[omim][PF6]:

1-Octyl-3-methylimidazolium hexafluorophosphate

r 0 :

Initial reaction rate (mol/(L min))

r :

Reaction rate (mol/(L min))

c :

Mole concentration (mol/L)

E :

Constant defined in Eq 2

c cat :

Mole concentration of ionic liquid catalysts (mol/L)

k + :

Forward reaction rate constant (L2/(min mol2))

k - :

Backward reaction rate constant (L2/(min mol2))

\( k_{ + }^{0} \) :

Arrhenius pre-exponential factors (L2/(min mol2))

\( k_{ - }^{0} \) :

Arrhenius pre-exponential factors (L2/(min mol2))

E A+ :

Activation energy of forward reaction (kJ/mol)

E A− :

Activation energy of backward reaction (kJ/mol)

V :

Volume of the reaction mixture (L)

R :

General gas constant, 8.314 kJ/(mol K)

N :

Total number of experimental data

v :

Stoichiometric coefficient

x :

Mole fraction

ρ:

Molar density of reaction mixture (mol/L)

t :

Time (min)

α:

Activity

γ:

Activity coefficient

0:

Standard state/conditions

+:

Forward reaction

−:

Backward reaction

cal :

Catalyst

calc :

Calculated value

exp :

Experimental value

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Acknowledgments

Financial support from the Innovation Fund of Tianjin University is gratefully acknowledged.

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Authors and Affiliations

  1. State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China

    Zhen Yang, Xianbao Cui, Ying Zhang, Tianyang Feng, Huan Liu & Ke Song

  2. Peiyang Chemical Equipment Co., Ltd., Tianjin, 300192, China

    Xufeng Yu

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  1. Zhen Yang
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  2. Xianbao Cui
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  3. Xufeng Yu
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  7. Ke Song
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Correspondence to Xianbao Cui.

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Yang, Z., Cui, X., Yu, X. et al. Transesterification of Methyl Acetate with n-Butanol Catalyzed by Single and Mixed Ionic Liquids. Catal Lett 145, 1281–1289 (2015). https://doi.org/10.1007/s10562-015-1506-7

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  • DOI: https://doi.org/10.1007/s10562-015-1506-7

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