Bedeaux Dick, Kjelstrup Signe
PoreLab, Department of Chemistry, Norwegian University of Science and Technology, 7491 Trondheim, Norway.
Entropy (Basel). 2018 Apr 4;20(4):250. doi: 10.3390/e20040250.
We derive in a new way that the intensive properties of a fluid-fluid Gibbs interface are independent of the location of the dividing surface. When the system is out of global equilibrium, this finding is not trivial: In a one-component fluid, it can be used to obtain the interface temperature from the surface tension. In other words, the surface equation of state can serve as a thermometer for the liquid-vapor interface in a one-component fluid. In a multi-component fluid, one needs the surface tension and the relative adsorptions to obtain the interface temperature and chemical potentials. A consistent set of thermodynamic properties of multi-component surfaces are presented. They can be used to construct fluid-fluid boundary conditions during transport. These boundary conditions have a bearing on all thermodynamic modeling on transport related to phase transitions.
我们以一种新的方式推导出，流体-流体吉布斯界面的强度性质与分界面的位置无关。当系统处于非全局平衡状态时，这一发现并非微不足道：在单组分流体中，它可用于从表面张力获得界面温度。换句话说，表面状态方程可作为单组分流体中液-气界面的温度计。在多组分流体中，需要表面张力和相对吸附量来获得界面温度和化学势。本文给出了一组多组分表面的一致热力学性质。它们可用于在输运过程中构建流体-流体边界条件。这些边界条件与所有与相变相关的输运热力学建模都有关系。
