Elasticity of Confined Simple Fluids from an Extended Peng-Robinson Equation of State

Elasticity of Confined Simple Fluids from an Extended Peng-Robinson Equation of State

Santiago A. Flores Roman, Gabriel D. Barbosa, and Gennady Y. Go

Thermodynamic properties of fluids in nanopores are altered by confinement, and equations of state (EOS) for bulk fluids are unable to predict them. We utilized a recent EOS based on the Peng-Robinson EOS, which takes into account the effects of confinement, to derive an analytical expression for the bulk modulus of the fluid. We calculated the modulus of liquid argon confined in spherical nanopores of various sizes, and verified our predictions with the Monte Carlo molecular simulations. Our result is a step toward developing an equation of state for confined fluids, which can be used for predictions of elasticity.

Industrial & Engineering Chemistry Research, 2023, 62, 22, 8972–8980
Corresponding Author: Gennady Gor

InterPore Members can promote their publications to the community via the InterPore InJournals Section of the Newsletter. If you wish to do so, please submit your publication highlight to newsletter@InterPore.org. Clearly indicate which of the authors is an InterPore member (or the institute with an Institutional Membership). Note that we will not review the entries nor does InterPore endorse the published work. Furthermore, we publish on a “submitted first, published first” basis. The highlighted publication should be no older than 6 months (available online).

The highlight should be short (max 100 words) and contain an illustration. Please note that we offer this opportunity exclusively to InterPore members. If you would like to become a member, please have a look here.