Volume 6 Issue 3
Jun.  2021
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Article Navigation >  Green Energy&Environment  > 2021  >  6(3): 405-412
Ruizhuan Wang, Hao Qin, Jingwen Wang, Hongye Cheng, Lifang Chen, Zhiwen Qi. Reactive extraction for intensifying 2-ethylhexyl acrylate synthesis using deep eutectic solvent [Im:2PTSA]. Green Energy&Environment, 2021, 6(3): 405-412. doi: 10.1016/j.gee.2020.12.020
Citation: Ruizhuan Wang, Hao Qin, Jingwen Wang, Hongye Cheng, Lifang Chen, Zhiwen Qi. Reactive extraction for intensifying 2-ethylhexyl acrylate synthesis using deep eutectic solvent [Im:2PTSA]. Green Energy&Environment, 2021, 6(3): 405-412. doi: 10.1016/j.gee.2020.12.020
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Reactive extraction for intensifying 2-ethylhexyl acrylate synthesis using deep eutectic solvent [Im:2PTSA]

doi: 10.1016/j.gee.2020.12.020

  • State Key Laboratory of Chemical Engineering and School of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China

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  • Corresponding author: E-mail address: hycheng@ecust.edu.cn (Hongye Cheng); E-mail address: zwqi@ecust.edu.cn (Zhiwen Qi)
  • Received date 14 September 2020, Accepted date 22 December 2020, Available online 29 December 2020, Publish date 30 June 2021,
    Abstract

  • 2-Ethylhexyl acrylate (2-EHA) is one of the most widely used acrylates in the polymer industry, which is synthesized via Fisher esterification that is limited by chemical equilibrium. To intensify the esterification process, in this work, reactive extraction concept is proposed, with halogen-free deep eutectic solvent (DES [Im:2PTSA]) as dual solvent-catalyst that consists of imidazole (Im) andp-toluenesulfonamide (PTSA). The bifunctional effects of the DES [Im:2PTSA] are evaluated by thermodynamic analysis and experimental study. Favorable phase splitting is verified byσ-potential analysis predicted by COSMO-RS theory, combined with experiments, and the optimal acid-to-alcohol molar ratio is set to 1.2. The esterification kinetics is then experimentally determined and fitted using the molar-based and activity-based pseudo-homogeneous (PH) models, respectively. The activity-based PH model, that considers the bifunctional roles of the DES, proves to be more accurate with small RMSD of 0.0344. The stability of DES after recycling is validated to further confirm the industrial prospects of DES [Im:2PTSA] in 2-EHA production.

     

    Reactive extraction is proposed for 2-ethylhexyl acrylate synthesis intensified by bifunctional deep eutectic solvent (DES), the role as catalyst and extractant is verified by thermodynamic analysis and kinetic modeling.

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