甲酰胺在乙二醇-水混合溶剂中的稀释焓  

Dilution Enthalpies of Formamide in Aqueous Ethylene Glycol Solutions

作　　者：王旭[1] 许莉[1] 张锐[1] 林瑞森[1] 

机构地区：[1]浙江大学化学系,杭州310027

出　　处：《高等学校化学学报》2006年第9期1752-1754,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20273061)资助

摘　　要：The dilution enthalpies of formamide in aqueous ethylene glycol solutions were determined by using a CSC- KG-1/54400 isothermal calorimeter at 298.15 K. The homogeneous enthalpic interaction coefficients in the range of ethylene glycol mass fraction（0%\40%） were calculated according to the excess enthalpy concept. The results show that enthalpic pair interaction coefficients h 2 of formamide are negative in aqueous ethylene glycol solutions and pass through a minimum at w≈0.20 of ethylene glycol in mixed solvents.The dilution enthalpies of formamide in a CSC-4400 isothermal calorimeter at 298. 15 K. range of ethylene glycol mass fraction（0%-40% ） aqueous ethylene glycol solutions were determined by using The homogeneous enthalpic interaction coefficients in the were calculated according to the excess enthalpy concept. The results show that enthalpic pair interaction coefficients h2 of formamide are negative in aqueous ethylene glycol solutions and pass through a minimum at w ≈0. 20 of ethylene glycol in mixed solvents.

关 键 词：甲酰胺 乙二醇 稀释焓 焓对相互作用系数 结构相互作用 

分 类 号：O642[理学—物理化学]