Solubility of Carbon Dioxide in Carboxylic Acid-Based Deep Eutectic Solvents,Journal of Chemical & Engineering Data

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Solubility of Carbon Dioxide in Carboxylic Acid-Based Deep Eutectic Solvents
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2020-12-01 , DOI: 10.1021/acs.jced.0c00844
Fadhila Rabhi ₁ , Fabrice Mutelet ₂ , Hocine Sifaoui ₁

Affiliation

The solubility of carbon dioxide (CO₂) in three carboxylic acid-based deep eutectic solvents (DESs) constituted by tetrabutylammonium bromide (TBABr)/octanoic acid (1:2) or TBABr/decanoic acid (1:2) or (dl-menthol/dodecanoic acid) (2:1) was measured using a high-pressure variable volume cell at a temperature ranging from 293.15 to 373.15 K and a pressure up to 122.9 bar. Under 40 bar and at 313.15 K, the best CO₂ solubility (2.53 mol_CO₂ kg_DES^–1) was found with TBABr/decanoic acid (1:2). Experimental measurements were correlated using the PC-SAFT strategy. In this work, the DESs are defined as pseudo-pure components and their PC-SAFT parameters were obtained by fitting to the density data of pure DESs. It was found that the PC-SAFT equation of state represents the CO₂ solubility in carboxylic acid-based DESs with good accuracy.

中文翻译：

二氧化碳在基于羧酸的深共晶溶剂中的溶解度

二氧化碳的溶解度（CO ₂）在由四丁基溴化铵由3个基于羧酸的深共晶的溶剂（DESS）（TBABr）/辛酸（1：2）或TBABr /癸酸（1：2）或（DL -薄荷醇/十二烷酸（2：1）使用高压可变体积比色皿在293.15至373.15 K的温度和最高122.9 bar的压力下测量。在40 bar和313.15 K下，使用TBABr /癸酸（1：2）发现最佳的CO ₂溶解度（2.53 mol _{CO ₂} kg _DES^–1）。实验测量值使用PC-SAFT策略进行关联。在这项工作中，DES被定义为伪纯组分和它们的PC-SAFT参数是通过拟合纯DES的密度数据获得的。已发现状态方程式PC-SAFT准确地表示了CO ₂在羧酸基DES中的溶解度。

更新日期：2021-01-14

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