English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/217230
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Chemical potentials and potential distributions of inclusion gas in quenched-annealed random porous media

AuthorsFernaud, M. J.; Lomba, Enrique ; Lee, L. L
Issue Date8-Dec-1999
PublisherAmerican Institute of Physics
CitationJournal of Chemical Physics 111: 10275-10286 (1999)
AbstractThe adsorption of hard-sphere gas in a random porous media and/or in a disordered hard sphere matrix is studied by applying the replica-Ornstein-Zernike (ROZ) equations for the quenched-annealed systems. Our interests are (1) to derive new formulas for the chemical potentials and the potential distributions theorems for such systems and (2) to use these derivations as consistency requirements for improving the closure relations in the ROZ. Two types of consistencies are enforced: (i) bulk thermodynamic property consistencies, such as the Gibbs-Duhem relation and (ii) zero-separation theorems on the cavity functions. Five hard-sphere matrix/hard-sphere fluid systems have been investigated, representing different porosities and size ratios. Direct formulas for the chemical potentials and the zero-separation theorems for the fluid cavity functions are derived and tested. We find uniformly better agreement with Monte Carlo data when self-consistency is enforced, than the conventional closures: such as the Percus-Yevick and hypernetted chain equations. In general, the structural properties are improved, as well as the thermodynamic properties. There remains discrepancy in the fluid-replica structure h 12(r) at coincidence, r = 0. The nature of the h 12(r) behavior is discussed in light of the consistency principles. © 1999 American Institute of Physics.
Description12 pags., 8 figs., 1 tab.
Publisher version (URL)http://dx.doi.org/10.1063/1.480376
URIhttp://hdl.handle.net/10261/217230
Identifiersdoi: 10.1063/1.480376
issn: 0021-9606
Appears in Collections:(IQFR) Artículos
Files in This Item:
File Description SizeFormat 
Chemical potentials.pdf446,84 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.