Nano Science and Technology Institute
Nanotech 2005 Vol. 2
Nanotech 2005 Vol. 2
Technical Proceedings of the 2005 NSTI Nanotechnology Conference and Trade Show, Volume 2
 
Chapter 8: Atomic and Mesoscale Modelling of Nanoscale Phenomena
 

Simplified Crossover Droplet Model for Adsorption of Critical and Supercritical Fluids in Slit Nano-Pores

Authors:S.B. Kiselev and J.F. Ely
Affilation:Colorado School of Mines, US
Pages:530 - 533
Keywords:adsorption, crossover theory, fluids, nanopores
Abstract:We present a a simplified crossover droplet (SCD) model for the excess adsorption of pure fluids at a flat solid-liquid interface in the volume and slit nano pores, which reproduces scaling behavior of the excess adsorption in the critical region, and is reduced to the classical, van der Waals-type analytical model far away from the bulk critical point. In developing this model, we used the density-functional theory (DFT) approach for the order parameter profile calculations with a generalized corresponding states model for the local free-energy density [1]. The SCD model well represents the available experimental adsorption data for Kr/graphite, C2H4/graphite, C3H8/griphite, CO2/silica, and SF6/graphite systems in the volume, slit nanopores, and CO2/silica gel system as well
Simplified Crossover Droplet Model for Adsorption of Critical and Supercritical Fluids in Slit Nano-PoresView PDF of paper
ISBN:0-9767985-1-4
Pages:808
Hardcopy:$109.95
 
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