LIQUID-LIQUID EQUILIBRIUM FOR FLUIDS CONFINED WITHIN RANDOM POROUS MATERIALS

Using the Gibbs Ensemble Monte Carlo (GEMC) simulation technique, we e xamine the liquid-liquid phase behavior for a symmetric binary LJ flui d confined in a disordered solid matrix. Increasing the matrix packing fraction and adsorption strength, and lowering the ratio of adsorbent to adsorbate particle size reduces the magnitude of the miscibility g ap. We also employ Voronoi tessellations to analyze the distribution o f cavity sizes in mono- and polydisperse matrices to help explain the observed phase behavior. (C) 1996 American Institute of Physics.