3,4-二硝基呋咱基氧化呋咱在乙醇-水二元体系中溶解度的测定与关联（英）
2016,24(9):886-891
摘要：利用激光监视系统测定了3, 4-二硝基呋咱基氧化呋咱(DNTF)在乙醇-水中不同温度下的溶解度，并用van′t Hoff方程、修正的Apelblat方程、R-K方程和Jouyban-Acree方程对所测的溶解度数据进行拟合。四种方程的相关系数均大于0.99, 且均方根偏差都接近于0，说明所选四种方程都能很好地拟合实验数据。根据所测溶解度数据，计算了DNTF在乙醇-水体系中的溶解熵，溶解焓和溶解的吉布斯自由能，表明DNTF在乙醇-水二元体系中溶解是一个吸热、非自发过程。
关键词：3,4-二硝基呋咱基氧化呋咱(DNTF); 溶解度; 拟合; 热力学性质
Determination and Correlation of Solubility in Binary System Ethanol-Water of 3,4-Bis(3-nitrofurazan-4-yl)furoxan
Abstract：The solubility data of 3, 4-bis(3-nitrofurazan-4-yl)furoxan (DNTF) in binary system ethanol-water at temperatures ranging from 298.15 to 338.15 K were determined by using a laser monitoring system under atmospheric pressure. The van′t Hoff plot, modified Apelblat equation, R-K model and Jouyban-Acree model were adopted to fit the experimental solubility data. Since the correlation coefficients (R2) of the four correlation equations are greater than 0.99 and the Root-mean-square deviations (RMSD) are close to 0, four correlation equations can be adopted to correlate the solubility data. The standard enthalpy of dissolution, standard entropy of dissolution and the Gibbs free energy were calculated based on the experimental solubility data, from which we conclude that the dissolution of DNTF is an endothermic and non-spontaneous process.
Key words：3,4-bis(3-nitrofurazan-4-yl)furoxan; solubility; correlation; thermodynamic properties
收稿日期：2016-02-25
基金项目：无
