Vapor–liquid phase equilibria for mixtures containing diatomic Lennard–Jones molecules

Autor:	Carol K. Hall, Aysa L. Galbraith
Rok vydání:	2006
Předmět:	Lennard-Jones potential Critical point (thermodynamics) Chemistry General Chemical Engineering Monte Carlo method Intermolecular force Quadrupole General Physics and Astronomy Thermodynamics Physical and Theoretical Chemistry Flory–Huggins solution theory Diatomic molecule Phase diagram
Zdroj:	Fluid Phase Equilibria. 241:175-185
ISSN:	0378-3812
DOI:	10.1016/j.fluid.2005.12.026
Popis:	Vapor–liquid phase diagrams are calculated for binary mixtures of diatomic Lennard–Jones molecules using Monte Carlo simulations and the Gibbs–Duhem integration method. We explore the effects of varying the molecular size ratio, intermolecular attraction parameter ratio and binary interaction parameter on the mixture’s phase behavior. We plot pressure versus composition vapor–liquid phase diagrams for the binary mixtures O2–N2 ,C O 2–C2H6 and N2–C2H6 at different temperatures. Our results are in good agreement with experimental data, especially away from the critical point. Adding a quadrupole term to the two-center Lennard–Jones (2CLJ) potential model further improves the agreement with experimental data. We also investigate the dependence of Henry’s constant on temperature, pressure and binary interaction parameter. © 2006 Elsevier B.V. All rights reserved.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::84a59a775becd2dc5d2f2b7bec30e804 https://doi.org/10.1016/j.fluid.2005.12.026 Zobrazit plný text záznamu Full Text from ScienceDirect