Adsorption isotherms and surface geometry

Citation
C. Rascon et Ao. Parry, Adsorption isotherms and surface geometry, FLU PH EQUI, 185(1-2), 2001, pp. 147-155
Citations number
16
Categorie Soggetti
Physical Chemistry/Chemical Physics","Chemical Engineering
Journal title
FLUID PHASE EQUILIBRIA
ISSN journal
03783812 → ACNP
Volume
185
Issue
1-2
Year of publication
2001
Pages
147 - 155
Database
ISI
SICI code
0378-3812(20010730)185:1-2<147:AIASG>2.0.ZU;2-B
Abstract
We consider fluids adsorbed at generalised wedges described by shape functi ons x(gamma) in one direction (x), and translationally invariant in the oth er. For the limiting cases gamma = 0 and infinity, the substrate correspond s to a planar wall and a capillary slit, respectively. In this way, we show how wetting-like adsorption isotherms become capillary-like as gamma is in creased from 0 to infinity. The mechanism for the cross-over to condensatio n is shown to involve several intermediate regimes corresponding to novel e xamples of adsorption isotherms. (C) 2001 Elsevier Science B.V. All rights reserved.