Abstract

New mixing rules which incorporate lattice fluid excess functions (for example Wilson and NRTL) and the correct quadratic concentration dependence of the second virial coefficient are presented. It is shown that the excess Gibbs functions derived for activity coefficient models correspond to the attractive part of the excess Helmholtz energy derived from EOS. This allows the formulation of a class of mixing rules which are independent of the repulsive term in the EOS, and are applicable to both cubic and noncubic EOS. The mixing rules are applied to different low-pressure phase equilibria and to two near-critical and supercritical systems.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.