苯、甲苯和乙苯在低共熔溶剂中的溶解度,Journal of Chemical & Engineering Data

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苯、甲苯和乙苯在低共熔溶剂中的溶解度
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2021-05-27 , DOI: 10.1021/acs.jced.1c00091
Xiaohui Qiao ₁ , Xue Sun ₁ , Hansen Yang ₁ , Hualiang An _{1,

2} , Fang Li _{1,

2} , Wei Xue _{1,

2} , Yanji Wang _{1,

2,

3}

Affiliation

本工作中，氯化胆碱/尿素 (1:2)、氯化胆碱/草酸 (1:1)、氯化胆碱/乙二醇 (1:2)、苄基三苯基氯化鏻/乙二醇 (1:11)、四丁基溴化铵/乙二醇 (1:4)、四丁基溴化铵/二甘醇 (1:4) 和四丁基溴化铵/三甘醇 (1:4) 作为低共熔溶剂 (DESs) 进行了检测。测定这些溶剂的熔点和动态粘度，并使用T之间的浊点法评估苯、甲苯和乙苯在每种溶剂中的溶解度。= 303.15 和 353.15 K 在大气压下。发现这三种芳族化合物中的每一种在这些 DES 中的溶解度都随着温度的升高而增加。DES中的氢键受体和氢键供体也显示出影响溶解度，前者具有更大的影响，并且这种影响以四丁基溴化铵>苄基三苯基氯化鏻>氯化胆碱的顺序降低。简化的双参数方程和 Apelblat 经验方程用于关联实验确定的苯、甲苯和乙苯在七种 DES 中的溶解度，后一个方程产生更高的相关性。

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Solubilities of Benzene, Toluene, and Ethylbenzene in Deep Eutectic Solvents

In this work, choline chloride/urea (1:2), choline chloride/oxalic acid (1:1), choline chloride/ethylene glycol (1:2), benzyltriphenylphosphonium chloride/ethylene glycol (1:11), tetrabutylammonium bromide/ethylene glycol (1:4), tetrabutylammonium bromide/diethylene glycol (1:4), and tetrabutylammonium bromide/triethylene glycol (1:4) were examined as deep eutectic solvents (DESs). The melting points and dynamic viscosities of these solvents were determined, and the solubilities of benzene, toluene, and ethylbenzene in each were assessed using the cloud point method between T = 303.15 and 353.15 K at atmospheric pressure. The solubilities of each of these three aromatic compounds in these DESs were found to increase with increases in temperature. Both the hydrogen bond acceptors and hydrogen bond donors in the DESs were also shown to affect solubility, with the former having a greater effect and this effect decreasing in the order of tetrabutylammonium bromide > benzyltriphenylphosphonium chloride > choline chloride. The simplified dual-parameter equation and the Apelblat empirical equation were used to correlate the experimentally determined solubilities of benzene, toluene, and ethylbenzene in the seven DESs, and the latter equation generated higher correlations.

更新日期：2021-06-10

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