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Physical Properties and NH3 Solubilities of Deep Eutectic Solvents Formed by Choline Chloride and Glycols
Fluid Phase Equilibria ( IF 2.6 ) Pub Date : 2021-02-01 , DOI: 10.1016/j.fluid.2020.112871
Ji-Yong Huang , Wen-Jing Jiang , Peng Xiao , Zi-Tian Fan , Fu-Yu Zhong , Hai-Long Peng , Jun Du , Kuan Huang

ABSTRACT In this study, deep eutectic solvents (DESs) formed by choline chloride (ChCl) and three glycols−ethylene glycol (EG), 1,3-propanediol (PD) and 1,4-butanediol (BD)−were investigated for NH3 absorption. The densities and viscosities of DESs at 298.2~358.2 K and 101.3 kPa were measured first, and fitted to the linear equation and Vogel−Fulcher−Tammann equation respectively. The solubilities of NH3 in DESs at 298.2~353.2 K and 0~250.0 kPa were then measured by a well-established dual-chamber method. The effects of temperatures, pressures and liquid compositions on NH3 solubilities were examined, and the NH3 solubilities of DESs were compared with those of other solvents reported in the literature. Finally, the solubilities of NH3 were fitted to the Krichevsky−Kasarnovsky equation to calculate the Henry's constants and partial molar volumes at infinite dilution of NH3 in DESs, as well as the enthalpy changes, Gibbs free energy changes and entropy changes for NH3 absorption process.

中文翻译:

氯化胆碱和乙二醇形成的深共熔溶剂的物理性质和 NH3 溶解度

摘要 在本研究中,研究了由氯化胆碱 (ChCl) 和三种乙二醇-乙二醇 (EG)、1,3-丙二醇 (PD) 和 1,4-丁二醇 (BD)- 形成的低共熔溶剂 (DESs) 的 NH3吸收。首先测量DESs在298.2~358.2 K和101.3 kPa下的密度和粘度,并分别拟合线性方程和Vogel-Fulcher-Tammann方程。然后通过完善的双室方法测量 298.2~353.2 K 和 0~250.0 kPa 下 DESs 中 NH3 的溶解度。考察了温度、压力和液体成分对 NH3 溶解度的影响,并将 DES 的 NH3 溶解度与文献中报道的其他溶剂的溶解度进行了比较。最后,将 NH3 的溶解度拟合到 Krichevsky-Kasarnovsky 方程以计算 Henry'
更新日期:2021-02-01
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