摘要
基于液体混合的热力学模型,为非电解质溶液导得了1个比Scatchard-Hilde-brand正规溶液理论更加严格的过量Gibbs自由能表示式.据此,定义了1个新的溶解度参数,它等于液体的内聚能密度除以内压的开方根.对35个二元液体混合物的过量Gibbs自由能预测结果表明,预测值与实验值的偏差大多优于SHFH理论,特别是碳氟与碳氢化合物的溶液,对于这类溶液,正规溶液及其修正形式SHFH理论是不适用的.
On the basis of a thermodynamic model of liquid mixtures, the expression of excess Gibbs free energy derived for non - electrolyte solutions is more strict than those of Scatchard - Hildebrand theory of regular solutions. A new solubility parameter thereby defined equals to the cohesive energy density of the liquid divided by the square root of internal pressure. The prediction results of excess Gibbs free energy show that its deviation from the experimental values is less than those of SH theory and the modified SHFH theory for most of thirty - five binary liquid mixtures, especially in solutions of fluorocarbons and hydrocarbons where SH and SHFH theory are not applicable.
出处
《化工学报》
EI
CAS
CSCD
北大核心
1994年第6期665-672,共8页
CIESC Journal
基金
国家自然科学基金资助项目
关键词
溶液理论
内压力
溶解度参数
solution theory, internal pressure, solubility parameter
