Modeling Mercury Porosimetry Using Statistical Mechanics.

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Details zur Publikation

Autorinnen und Autoren: Thommes M
Zeitschrift: Langmuir
Verlag: American Chemical Society
Jahr der Veröffentlichung: 2004
Band: 20
Heftnummer: 15
Seitenbereich: 6482-6489-6489
ISSN: 0743-7463
eISSN: 1520-5827


We consider mercury porosimetry from the perspective of the statistical thermodn. of penetration of a nonwetting liq. into a porous material under an external pressure. We apply d. functional theory to a lattice gas model of the system and use this to compute intrusion/extrusion curves. We focus on the specific example of a Vycor glass and show that essential features of mercury porosimetry expts. can be modeled in this way. The lattice model exhibits a symmetry that provides a direct relationship between intrusion/extrusion curves for a nonwetting fluid and adsorption/desorption isotherms for a wetting fluid. This relationship clarifies the status of methods that are used for transforming mercury intrusion/extrusion curves into gas adsorption/desorption isotherms. We also use Monte Carlo simulations to investigate the nature of the intrusion and extrusion processes. [on SciFinder(R)]

FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Thommes, Matthias Prof. Dr.
Lehrstuhl für Thermische Verfahrenstechnik

Zuletzt aktualisiert 2019-23-08 um 09:18