新的电解质混合溶剂体系的Gibbs过量自由能模型  

NEW EXCESS GIBBS FREE ENERGY MODEL FOR ELECTROLYTE MIXED SOLVENT SOLUTIONS

作　　者：陆小华[1] 张吕正[1] 王延儒[1] 时钧[1] 

机构地区：[1]南京化工学院化学工程系

出　　处：《南京化工学院学报》1994年第2期1-6,共6页

基　　金：国家自然科学青年基金

摘　　要：提出一个新的电解质混合溶剂体系的Ｇｉｂｂｓ过量自由能模型。该模型由三项组成：ＤｅｂｙｅＨｕｃｋｅｌ项、溶剂－溶剂相互作用项和溶剂化作用项。其表达形式简洁、满足热力学一致性，仅从２９８．１５Ｋ下关联的二元参数就可以预测单一电解质混合溶剂体系的热力学性质，用以熔融盐为标准态扩展到混合溶剂体系的Ｄｅｂｙｅ－Ｈｕｃｋｅｌ项，能正确地预测此类体系的盐析效应。A new excess Gibbs free enrery model for electrolyte mixed solvent systems is developed,The proposed model consists of three terms to account for the Debye-Huckel, solvent-solvent and solvation of eleclrolyte interactions. The expression is simple. thermodynamically consistent, and can beused to predict the thermodynamiC properties in one electrolyte-two solvent mixtures using only the binary parameters correlated at 298. 15 K. It is also demonstrated that the Debye-Huckel term extendedto mixed solvent with the pure fused salt standard state predicts the salting out effect in the right direction.

关 键 词：电解质溶液 混合溶剂 Gibbs过量自由能 汽液平衡 

分 类 号：O646.1[理学—物理化学] O642.42[理学—化学]