摘要
应用等温流动微量热技术测定了298.15 K下D-甘露醇和D-山梨醇在纯水和卤化钠水溶液中的稀释焓,利用M cM illan理论计算了D-甘露醇和D-山梨醇在纯水和卤化钠水溶液中焓相互作用系数.结果表明,D-甘露醇和D-山梨醇在纯水和卤化钠水溶液中的二阶焓相互作用系数均为正值,并随着卤离子半径的变化而相应变化;且同种溶剂中,D-甘露醇的二阶焓相互作用系数要大于D-山梨醇的.结合两分子结构的差异,通过溶质-溶质相互作用和溶剂-溶质相互作用对这一结果进行了讨论.
The dilution enthalpies of D-sorbitol and D-mannitol in water and sodium halide aqueous solutions were determined by isothermal microcalerimetry at 298.15 K. Experiential enthalpies of dilution varying with the concentration of the polylols were correlated with virial expansion equation, which was obtained with the McMillan-Mayer theory. Enthalpic interaction coefficients, h2, h3, h4, in the equations are got and the values of pair wise enthalpic interaction coefficient （h2） have been discussed in terms of solute-solute and solute-solvent interactions and the different conformations of the two polylols.
出处
《化学研究》
CAS
2006年第3期64-66,共3页
Chemical Research
基金
滨州学院"青年创新项目"科学基金资助项目(BZXYQNLG2005013)
