化学学报 ›› 2003, Vol. 61 ›› Issue (2): 175-180. 上一篇    下一篇

研究论文

电解质模型流体的MonteCarlo分子模拟

李春喜;田茹;卢贵武;王子镐;汪文川   

  1. 北京化工大学化学工程学院
  • 发布日期:2003-02-15

Monte Carlo Simulation on Model Fluid of Electrolyte Solution

Li Chunxi;Tian Ru;Lu Guiwu;Wang Zihao;Wang Wenchuan   

  1. College of Chemical Engineering,Beijing University of Chemical Technology
  • Published:2003-02-15

采用正则系综Monte Carlo分子模拟方法,模拟得到了一系列状态条件下1:1 价和2:2价对称电解质模型流体的径向分布函数、构型能和压缩因子的“机器实验 数据”,这些数据对构筑电解质溶液的新参考流体具有重要意义。模拟过程中,电 解质溶液被简化为硬球离子和硬球点偶扳子的混合物,离子—离子、离子—偶极和 偶极—偶极长程位能计算采用了Ewald求和方法。最后,对离子—偶极子混合物的 结构和热力学性质与体系温度、密度和浓度的关系进行了分析和讨论。

关键词: 蒙特卡罗模拟, 电解质, 热力学性质

A series of radial distribution function, configuration energies and pressure for symmetrical electrolyte model fluid of 1 :1 and 2:2 type under varied conditions were obtained by using Monte Carlo simulation of NVT canonical ensemble. It is of great significance for constructing a new reference fluid of electrolyte solution. The electrolyte solution is represented with a mixture of charged and dipolar hard sphere. The structural orderness and thermodynamic properties of ion-dipole mixture as well as their parameters dependence on temperature, concentration and total density were discussed.

Key words: MONTECARLO SIMULATIONS, ELECTROLYTE, THERMODYNAMIC PROPERTIES

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