CAJ | 학술논문

在298.15 K时,采用微热量热仪测定斯蒂芬酸钾盐[K2(TNR)(H2O)]n和斯蒂芬酸铯盐[Cs2(TNR)(H2O)2]n两种含能配合物在水和N,N-二甲基甲酰胺(DMF)溶剂中的溶解热,研究其溶解过程和溶解热化学性质.结果表明,两种配合物溶解于水是吸热过程,而溶解于DMF则为放热过程,这主要是由于溶质和溶剂的分子结构及其极性不同而导致的.通过对实验数据计算拟合,求得这两种配合物的溶解焓(ΔsolH)、相对表观摩尔焓(ФLi)、相对偏摩尔焓(Li)及稀释焓(ΔdilH1,2)的经验公式和标准溶解焓值(ΔsolH??m).
재298.15 K시,채용미열량열의측정사체분산갑염[K2(TNR)(H2O)]n화사체분산색염[Cs2(TNR)(H2O)2]n량충함능배합물재수화N,N-이갑기갑선알(DMF)용제중적용해열,연구기용해과정화용해열화학성질.결과표명,량충배합물용해우수시흡열과정,이용해우DMF칙위방열과정,저주요시유우용질화용제적분자결구급기겁성불동이도치적.통과대실험수거계산의합,구득저량충배합물적용해함(ΔsolH)、상대표관마이함(ФLi)、상대편마이함(Li)급희석함(ΔdilH1,2)적경험공식화표준용해함치(ΔsolH??m).
The dissolution and thermochemical properties of potassium styphnate [K2(TNR) (H2O)]n and cesium styphnate [Cs2(TNR)(H2O)2]n in water and N,N-dimethylformamide (DMF) at 298.15 K were studied by calorimetry. The processes are endothermic in water, and exothermic in DMF because of the different molecular structure and polarity of the solutes and solvents. Empirical formulas for the solution enthalpies (ΔsolH), relative apparent molar solution enthalpies (ФLi), relative partial molar enthalpies (Li), and dilution enthalpies (ΔdilH1,2) are deduced by polynomial expressions, and standard solution enthalpies (ΔsolH??m) are also calculated.