【摘要】 采用数字式密度计测量了氯化铷-水、葡萄糖-水二元体系和氯化铷-葡萄糖-水三元体系在298.15K时的密度,通过实验设计,利用这一套密度数据获得了氯化铷和葡萄糖在氯化铷-葡萄糖-水三元体系中的表观摩尔体积及相应的标准偏摩尔体积。基于结构水化作用模型和Sav-age-Wood基团加合模型对氯化铷与葡萄糖在水溶液中的弱相互作用进行了分析,结果表明,氯化铷和葡萄糖相互作用的体积参数取决于金属阳离子与糖分子中的亲水基团(M+-O)的相互作用。更多还原

【Abstract】 Density measurements were carried out at 298.15 K for the RbCl-glucose-water system. The apparent molar volume of glucose (V_ф,S) and RbCl (V_ф,E) in the ternary solutions, the corresponding infinite dilution apparent molar volume (V_ф,S0) and (V_ф,E0), the standard transfer volume Δ_tV_ф,S0 of glucose from water to aqueous RbCl solutions, as well as the Δ_tV_ф,E0 of RbCl from water to glucose solutions were determined. The structural hydration interaction model and the Savage-Wood group additivity principle were employed to study the volumetric interaction properties of RbCl with glucose in water. The results suggest that the volumetric interaction parameters are controlled primarily by the interaction of Rb+ with the hydrophilic groups （M+-O） in glucose molecule.更多还原