Xian Sun, Xingzhu Wang, Min Wan, Degan Lu, Wenguo Xing, Shuai Yu, Fumin Xue
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引用次数: 0
摘要
采用重量法测定了1,3,5-三溴苯（m-TBB）在五种二元溶剂混合物（即N,N-二甲基甲酰胺（DMF）+水、N,N-二甲基乙酰胺（DMA）+水、1,4-二氧六环+水、DMF+乙醇和DMA+乙醇）中的溶解度。测定是在 288.15 K 至 323.15 K 的温度范围内和环境压力下进行的。溶解度数据与良好溶剂的摩尔分数和温度呈正相关。溶解度顺序为：1,4-二氧六环+水；DMA+乙醇；DMF+乙醇；DMA+水；DMF+水。m-TBB 的溶解度与溶剂极性呈负相关。选择了四种热力学模型（包括 Jouyban-Acree-Apelblat、Sun 模型、NRTL 模型和 Wilson 模型）来关联 m-TBB 的溶解度数据。溶解度数据对于溶剂选择和产率判断具有重要意义。
Solubility Determination and Correlation of 1,3,5-Tribromobenzene in Five Kinds of Binary Mixed Solvents
The solubility of 1,3,5-Tribromobenzene (m-TBB) in five kinds of binary solvent mixtures (i.e., N,N-dimethylformamide (DMF) + water, N,N-dimethylacetamide (DMA) + water, 1,4-dioxane + water, DMF + ethanol, and DMA + ethanol) was measured by a gravimetric method. The determination was carried out at temperatures ranging from 288.15 K to 323.15 K under ambient pressure. The solubility data were positively correlated with the molar fraction of good solvent and temperature. The order of solubility is 1,4-dioxane + water > DMA + ethanol > DMF + ethanol > DMA + water > DMF + water. The solubility of m-TBB was negatively correlated with solvent polarity. Four thermodynamic models (including the Jouyban–Acree–Apelblat, the Sun model, the NRTL model, and the Wilson model) were selected to correlate the solubility data of m-TBB. The solubility data are of great significance for solvent selection and yield judgment.
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Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
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