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Title

Adsorption of probe molecules in pillared interlayered clays: Experiment and computer simulation

AuthorsGallardo, Alberto ; Guil, J. M. ; Lomba, Enrique ; Almarza, Noé G. ; Khatib, S. J. ; Cabrillo García, Carlos ; Sanz, A. ; Pires, João
Issue Date2014
PublisherAmerican Institute of Physics
CitationJournal of Chemical Physics 140: 224701 (2014)
AbstractIn this paper we investigate the adsorption of various probe molecules in order to characterize the porous structure of a series of pillared interlayered clays (PILC). To that aim, volumetric and microcalorimetric adsorption experiments were performed on various Zr PILC samples using nitrogen, toluene, and mesitylene as probe molecules. For one of the samples, neutron scattering experiments were also performed using toluene as adsorbate. Various structural models are proposed and tested by means of a comprehensive computer simulation study, using both geometric and percolation analysis in combination with Grand Canonical Monte Carlo simulations in order to model the volumetric and microcalorimetric isotherms. On the basis of this analysis, we propose a series of structural models that aim at accounting for the adsorption experimental behavior, and make possible a microscopic interpretation of the role played by the different interactions and steric effects in the adsorption processes in these rather complex disordered microporous systems. © 2014 AIP Publishing LLC.
URIhttp://hdl.handle.net/10261/110079
DOI10.1063/1.4880962
Identifiersdoi: 10.1063/1.4880962
issn: 0021-9606
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