文献类型：期刊文献

英文题名：Toward Reactive Extraction Processes for Synthesizing Different Long-Chain Esters: A General Approach by Tuning Bifunctional Deep Eutectic Solvent

作者：Wang, Ruizhuan[1]; Qin, Hao[2]; Song, Zhen[3]; Cheng, Hongye[1]; Chen, Lifang[3]; Qi, Zhiwen[3]

机构：[1] State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China; [2] Otto-von-Guericke University Magdeburg, Universit?tsplatz 2, Magdeburg, D-39106, Germany; [3] Max Planck Partner Group, China

年份：2022

外文期刊名：SSRN

收录：EI(收录号：20220040484)

语种：英文

外文关键词：Esterification - Esters - Eutectics - Solvent extraction - Thermoanalysis

摘要：The synthesis of long-chain esters in reactive extraction process using bifunctional deep eutectic solvent (DES) demands a wide solvent selection range and optimal solvent choice. In this work, first, novel halogen-free DESs based on triazole and p-toluenesulfonic acid (PTSA) or benzenesulfonic acid (BSA) are prepared to expand the selection range of Br?nsted acidic DESs, whose binary solid-liquid phase diagrams are measured to confirm the DES formation. Then, the triazole-PTSA/BSA DESs together with the imidazole (Im)-PTSA/BSA DESs are characterized by pH measurement, 1 H-NMR characterization, and COSMO-RS interaction energy analysis, which reflect a two-step formation mechanism. The Im-PTSA/BSA DESs are acid-base tunable while the triazole-PTSA/BSA DESs are tunable from weak acid to strong acid. Afterwards, four strong acidic DESs at the eutectic compositions, including [Im:2BSA], [Im:2PTSA], [triazole:4BSA], and [triazole:4PTSA], are selected as dual solvent-catalyst in reactive extraction process for the intensified esterification with ester carbon chain length changing from C6 to C11. Finally, combining σ -potential thermodynamic analysis with experimental results, a general approach by tuning bifunctional deep eutectic solvent is clarified to the development of reactive extraction process for different long-chain ester syntheses. ? 2022, The Authors. All rights reserved.