Thermodynamic Models for Determination of the Solubility of Dibenzothiophene in Different Solvents at Temperatures from (278.15 to 328.15) K

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• 作者：Qi Zhang ; Yonghong Hu ; Ying Shi ; Yang Yang ; Limin Cheng ; Cuicui Cao ; Wenge Yang
• 刊名：Journal of Chemical & Engineering Data
• 出版年：2014
• 出版时间：September 11, 2014
• 年：2014
• 卷：59
• 期：9
• 页码：2799-2804
• 全文大小：243K
• ISSN：1520-5134

文摘

Data on corresponding solid鈥搇iquid equilibrium of dibenzothiophene (DBT) in different solvents are essential for a preliminary study of industrial applications. In this study, the solubility behavior of DBT in different solvents, such as methanol, ethanol, isopropyl alcohol, butan-1-ol, formic acid, and acetonitrile at temperatures ranging from (278.15 to 328.15) K was investigated. An analytical stirred-flask method was employed to measure the dissolubility of DBT. For the temperature range investigated, the solubility of dibenzothiophene in the solvents increased with increasing temperature. The thermodynamic models, such as the Van 鈥榯 Hoff model, the modified Apelblat model and the Buchowski鈥揔siazaczak 位h model were investigated to describe the experimental data. It was found that the modified Apelblat model was the most suitable for predicting the solubility behavior of DBT with a temperature increment. The calculated thermodynamic parameters indicated that in each studied solvent the dissolution process of DBT is endothermic.