摘要
利用电场的极化效应对物质分子间力的影响 ,研究了电场对乙醇 水、丙醇 水、醋酸 水体系汽液平衡的影响。结果表明 ,外加电场对这三个体系的汽液平衡均有影响 ,但不能明显改变共沸物系的共沸温度和共沸组成 ,即不能明显使共沸点漂移。电场使体系中介电常数大的组分在汽相中的含量增大 ,介电常数小的组分在汽相中的含量则减小。介电常数相差越大 。
Effect of electric field on the vapor liquid equilibrium of ethanol water,1 propanol water,acetic acid water system at 0.1013MPa was studied,and it is found that the vapor liquid equilibrium of these systems are influenced by the exerted electric field.The electric field can not obviously change the azeotropic point under our experimental conditions.Polarization of the electric field increases concentration of the component with higher dielectric constant,and lowers that of the component with lower dielectric constant in vapor phase.The larger the difference of dielectric constant between components is,the better the polarization effect is.
出处
《化学工程》
CAS
CSCD
北大核心
2001年第4期39-42,共4页
Chemical Engineering(China)
基金
国家自然科学基金资助项目 (No . 2 940 6 0 46 )
关键词
电场
极化
汽液平衡
electric field,polarization,vapor liquid equilibrium
