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Reaction kinetics of the esterification reaction between ethanol and acetic acid catalyzed by Keggin heteropolyacids

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Abstract

Heteropolyacids (HPAs), such as silicotungstic (HSiW), phosphotungstic (HPW), and phosphomolybdic (HPMo) acids, effectively catalyzed the esterification reaction between ethanol and acetic acid. The catalytic activities of HPAs were in an order of HSiW > HPW > HPMo. The conversion of ethanol was more than 85 % when HSiW catalyst was recycled for 10 times with a low mole ratio of HSiW to ethanol of 4.5 × 10−4:1 at 358 K. A second order reversible kinetic model fitted the experimental data well. The forward activation energies were 36.8, 32.6, and 31.6 kJ mol−1 when HSiW, HPW, and HPMo were used as catalysts at 323–358 K.

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Acknowledgments

This work was financially supported by research funds from Jiangsu Provincial Department of Education (CX2212-0683, 11KJB53002, 1102120C), Sichuan Province Nonmetallic Composites and Functional Materials Key Laboratory Project (10zxfk35), and Ministry of Education of the People’s Republic of China (2011M500866).

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Authors and Affiliations

  1. Faculty of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China

    Xiufeng Lu, Hengbo Yin, Lingqin Shen, Yonghai Feng, Aili Wang, Yutang Shen, Hui Hang & Danjun Mao

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  1. Xiufeng Lu
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  2. Hengbo Yin
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  3. Lingqin Shen
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  4. Yonghai Feng
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  7. Hui Hang
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  8. Danjun Mao
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Correspondence to Hengbo Yin.

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Lu, X., Yin, H., Shen, L. et al. Reaction kinetics of the esterification reaction between ethanol and acetic acid catalyzed by Keggin heteropolyacids. Reac Kinet Mech Cat 111, 15–27 (2014). https://doi.org/10.1007/s11144-013-0641-7

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  • DOI: https://doi.org/10.1007/s11144-013-0641-7

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