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Measurement and Correlation of the Solubility of Terephthalic Acid in Six Pure Solvents and Five Binary Mixtures
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2021-08-25 , DOI: 10.1021/acs.jced.1c00373
Dian Celante 1 , Lisiane O. Diehl 1 , Leoni N. Brondani 1 , Cezar A. Bizzi 2 , Fernanda de Castilhos 1
Affiliation  

The goal of this work was to measure the solubility of terephthalic acid (TA) in six pure solvents (2-ethyl-1-hexanol (2EH), dimethyl sulfoxide, 1-methyl-2-pyrrolidinone, N,N-dimethylformamide, N,N-dimethylacetamide, and pyridine) and five binary mixtures (composed of 2EH and 5 or 10% w/w another solvent) from 313.15 to 363.15 K at atmospheric pressure 101.3 kPa. Experiments were performed by an isothermal method employing an in situ filter to sample only the homogeneous liquid phase, and samples were analyzed by liquid chromatography. Solubility of TA in 2EH is 100-fold lower when compared to the other studied solvents, but a binary mixture composed of 2EH and 5 or 10% w/w (solute-free basis) dimethyl sulfoxide could increase solubility up to 61 and 165%, respectively. Furthermore, the parameters of λh, Apelblat, Wilson, and NRTL models were estimated. All of the models fitted the experimental data with good agreement, but the nonrandom two-liquid (NRTL) model was the most suitable to represent experimental data.

中文翻译:

对苯二甲酸在六种纯溶剂和五种二元混合物中溶解度的测定和相关性

这项工作的目标是测量对苯二甲酸 (TA) 在六种纯溶剂(2-乙基-1-己醇 (2EH)、二甲亚砜、1-甲基-2-吡咯烷酮、NN-二甲基甲酰胺、N , N-二甲基乙酰胺和吡啶)和五种二元混合物(由 2EH 和 5% 或 10% w/w 的另一种溶剂组成)在 101.3 kPa 大气压下从 313.15 到 363.15 K。实验是通过等温方法进行的,使用原位过滤器仅对均相液相进行取样,并通过液相色谱分析样品。与其他研究的溶剂相比,TA 在 2EH 中的溶解度低 100 倍,但由 2EH 和 5% 或 10% w/w(无溶质基础)二甲基亚砜组成的二元混合物可以将溶解度提高至 61% 和 165% , 分别。此外,λ h的参数、Apelblat、Wilson 和 NRTL 模型进行了估计。所有模型都与实验数据吻合良好,但非随机二液(NRTL)模型最适合代表实验数据。
更新日期:2021-09-09
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