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Updated: Oct 8, 2025

Preparation of Binary and Ternary Deep Eutectic Systems
Published on: October 31, 2019
Calorimetric effect and thermokinetics in the formation process of a deep eutectic solvent
Xue Lan1, Yan Tao Dong2, Tiancheng Mu1
1Department of Chemistry, Renmin University of China, Beijing 100872, China. tcmu@ruc.edu.cn.
Abstract:
For the first time, we report the calorimetric effect and thermokinetics in the formation process of a model deep eutectic solvent (DES), ChCl:urea. Mixing of a 1-to-2 molar ratio of choline chloride and urea shows a rapid endothermic process under stirring. The rate constants and reaction orders are determined by analyzing the thermokinetic curves at several constant temperatures. Low activation energy and activation parameters demonstrate that the formation of this DES is a rapid process. Other thermodynamic parameters are also estimated.
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