Adsorption of Binary Mixtures of the Lennard-Jones Truncated and Shifted Fluid on Planar Walls

Gas phase adsorption of binary mixtures on planar walls in dispersive systems was studied by molecular dynamics simulations, extending a previous study the pure components. The interactions between all particles, fluid as well solid, were described Lennard-Jones truncated and shifted potential with cutoff radius 2.5 σ. Two classes studied: (a) symmetric mixtures, which components also their wall particles are same but unlike fluid–fluid interaction parameter is varied; (b) an asymmetric mixture, energy one component lowered, such that it becomes light-boiling. For both nonselective different selectivity for two investigated. Data surface excess, thickness, structure adsorbate layer measured. results give insight into how influenced fluids wall.