Expansion or Contraction of Slit Pores Due to Gas Uptake
| Autor: | Milton W. Cole, Francesco Ancilotto, E. S. Hernández, Annie Grosman, Flavio Toigo |
|---|---|
| Přispěvatelé: | Institut des Nanosciences de Paris (INSP), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Department of Energy, Consejo Nacional de Investigaciones Cientificas y Tecnicas [PIP 0546], University of Buenos Aires, Argentina [X099] |
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Grand potential
Materials science Ciencias Físicas Imbibition Thermodynamics 02 engineering and technology 010402 general chemistry 7. Clean energy 01 natural sciences IMBIBITION Quantitative Biology::Subcellular Processes Adsorption PHYSISORPTION IN PORES CAPILLARY CONDENSATION General Materials Science Graphite Physisorption in pores [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat] Contraction (operator theory) Capillary condensation Gas uptake Function (mathematics) 021001 nanoscience & nanotechnology Condensed Matter Physics Slit Atomic and Molecular Physics and Optics 0104 chemical sciences Astronomía 0210 nano-technology CIENCIAS NATURALES Y EXACTAS |
| Zdroj: | Journal of Low Temperature Physics Journal of Low Temperature Physics, 2011, 163 (5-6), pp.284-301. ⟨10.1007/s10909-011-0350-4⟩ Journal of Low Temperature Physics, Springer Verlag (Germany), 2011, 163 (5-6), pp.284-301. ⟨10.1007/s10909-011-0350-4⟩ |
| ISSN: | 0022-2291 1573-7357 |
| Popis: | Adsorption inside a slit pore of flexible width w is explored, with a focus on how w varies as a function of the external pressure P of a gas in equilibrium with the adsorbate within the pore. The analysis is first carried out in general, using a minimization of the thermodynamic grand potential energy of the system. This leads to an equation predicting both the gas uptake N as a function of chemical potential μ and the expansion (or contraction) of the pore in response to the adsorbate's pressure. The resulting equilibrium behavior depends on the elastic parameters of the host material. Explicit results are derived for three adsorption systems: a low density fluid, Ar (a classical fluid at finite temperature T) in a graphite pore and 4He within a Au pore at T=0. The resulting behaviors include some situations where the pore expands and others for which it contracts. The difference arises from the sign of the thermodynamic response of the fluid as a function of slit width. © 2011 Springer Science+Business Media, LLC. Fil: Ancilotto, F.. Università di Padova; Italia Fil: Cole, M.W.. Pennsylvania State University; Fil: Grosman, A.. Universite Pierre et Marie Curie; Francia Fil: Hernandez, Ester Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina Fil: Toigo, F.. Università di Padova; Italia |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink