Thermo-physical properties of aqueous solutions of N,N-dimethylformamide

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• 作者：Mohammad Shokouhi ; Amir Hossein Jalili ; Masih Hosseini-Jenab ; Mehdi Vahidi
• 关键词：Thermo-physical property ; Transport property ; Heat capacity ; Excess property ; Thermal conductivity ; Thermal diffusivity
• 刊名：Journal of Molecular Liquids
• 出版年：2013
• 出版时间：October, 2013
• 年：2013
• 卷：186
• 期：Complete
• 页码：142-146
• 全文大小：1115 K

文摘

In this work, thermal properties including heat capacity, thermal conductivity and thermal diffusivity of pure and aqueous solution of N,N-dimethylformamide (DMF) at the entire range of composition were measured. All thermal properties were measured at temperatures from (303.15 to 353.15) K and at atmospheric pressure. Excess quantities of those mentioned properties were obtained and modeled by using Redlich-Kister equation. The results show that, excess molar heat capacity departs positively from rectilinear ideal solution, whereas excess thermal conductivity and thermal diffusivity deviate negatively from ideal solution at the temperature range studied in this work. The measured experimental data for all thermo-physical properties were also correlated by using the modified Setchenow equation.