摘要
从热力学基本原理出发,对电场中的热力学模型进行了理论推导,从理论上证明了外加电场对汽液平衡的影响.结果表明,对于二组元物系,施加电场与未施加电场情况下某一组分的液相组成之比的对数与溶液介电常数一次方成正比,与所施加电场强度的平方成正比.
It has been found that the vapor -liqu id equilibriumof 1-propanol -water systemis influenced by the external electric field.The exerte d electric field increases the equilibrium temperature and shortens the distance between T -x curve and T -y curve in T -x -y diagram of the vapor -liquid equilibrium of 1-propanol -water system.And the exerted electric fie ld has relatively smaller effect on b oth two ends of T -x -y curve and the azeotropic point for 1-propanol -wa ter system under our experiment conditions.Based on the fundamental thermodynamics theory,the thermod ynamics model for phase equilibrium in the exerted electric field is theoreti-cally deduced.Effect of the external electric field on vapor -liquid equ ilibriumis theoretically proved.The results show that the logarithmvalue of rati o of the composition of the certain component in an electric field to composition of this component without superimposing the electric field to this syste mis in direct proportion to dielectr ic constant of solution,and to the square of electric intensity.
出处
《沈阳工业大学学报》
EI
CAS
2001年第6期538-540,共3页
Journal of Shenyang University of Technology
基金
国家自然科学基金资助项目(294106046)
关键词
电场
汽液平衡
极化
热力学模型
相平衡
化学工业
electric field
vapor -liquid equilibrium
polarization thermodynamic model
