Statistical mechanics of partially-mobile adsorption of gases on homogeneous solid surfaces

1972 ◽  
Vol 41 (3) ◽  
pp. 415-429 ◽  
Author(s):  
C.S Lee ◽  
J.P O'connell
Keyword(s):  
Statistical Mechanics ◽  
Solid Surfaces ◽  
Adsorption Of Gases ◽  
Mobile Adsorption

scholarly journals A Simple Approach to the 2D Mobile Adsorption of Gases on Heterogeneous Solid Surfaces Exhibiting Random Surface Topography

1989 ◽  
Vol 6 (1) ◽  
pp. 35-51 ◽  
Author(s):  
W. Rudzinski ◽  
J. Jagiello
Keyword(s):  
Surface Topography ◽  
Compressibility Factor ◽  
Simple Approach ◽  
Solid Surfaces ◽  
Random Surface ◽  
Heats Of Adsorption ◽  
Adsorption Of Gases ◽  
Mobile Adsorption ◽  
Simple Equations ◽  
Heterogeneous Solid

Based on a summation to infinity of the virial expansion for the 2D compressibility factor, simple equations have been developed for adsorption isotherms, and heats of adsorption, of 2D dense mobile films adsorbed on solid surfaces. They have subsequently been generalized for the presence of an external, randomly varying potential field, created by the random surface topography exhibited by heterogeneous solid surfaces.

On the Hysteresis of Adsorption on Solid Surfaces

1952 ◽  
Vol 5 (2) ◽  
pp. 288
Author(s):  
RG Wylie
Keyword(s):  
Phase Transitions ◽  
Solid Surface ◽  
Three Dimensional ◽  
Solid Surfaces ◽  
Two Dimensional ◽  
Capillary Effects ◽  
First Order ◽  
Adsorption Of Gases ◽  
First Order Phase ◽  
Hysteresis Phenomena

Hysteresis phenomena associated with the adsorption of gases on solid surfaces are usually explained in terms of three-dimensional capillary effects or with more or less unspecific reference to phase transitions. It is shown that hysteresis effects are to be expected when two dimensional phase transitions occur on solids. In the connection, the thermodynamic equation governing the equilibrium of small, incompressible two-dimensional phases is derived. Such phases can form on an imperfect solid surface in an irreversible manner and, as calculation shows, can contribute significantly to the hysteresis of adsorption. In some cases the phase change may be responsible for the whole effect. The diffuseness of first-order phase transitions may be due to the same mechanism.

Physical properties of surfaces I - Kinetic friction

1935 ◽  
Vol 234 (741) ◽  
pp. 329-354 ◽  
Keyword(s):  
Mechanical Properties ◽  
Physical Properties ◽  
Surface Effect ◽  
Physical And Mechanical Properties ◽  
Surface Force ◽  
Solid Surfaces ◽  
Dust Particles ◽  
Kinetic Friction ◽  
Adsorption Of Gases ◽  
Molecular Layers

These papers describe an investigation of the physical and mechanical properties of solid surfaces, and the effect which the surfaces have on matter in their immediate vicinity. It is well known that the properties of gases, liquids and crystallizing solids are profoundly modified in the neighbourhood of a surface. There is, however, some uncertainty as to the magnitude and range of action of this surface force. Most experiments on the adsorption of gases show that the effect is confined to one or two molecular layers at the interface while in the case of liquid crystals we know that the surface effect can extend beyond this and causes an orientation of the crystal aggregates to a distance of several thousand Angstroms. Some workers have claimed that films of air or of alcohol ca . 40,000 A thick apparently possessed sufficient rigidity to resist a steady pressure equal to several grammes weight. It has been shown, J however, that if the surfaces are carefully polished and are free from dust particles there is no evidence for a long range surface effect of this magnitude.

scholarly journals Partially Mobile and Monolayer Adsorption of Gases on Energetically Homogeneous Adsorbent Surfaces

1994 ◽  
Vol 11 (1) ◽  
pp. 31-40 ◽  
Author(s):  
J.K. Garbacz ◽  
A. Kopkowski ◽  
D. Ziolkowska
Keyword(s):  
Graphitized Carbon Black ◽  
Model Parameters ◽  
Graphitized Carbon ◽  
Monolayer Adsorption ◽  
Different Temperatures ◽  
Adsorption Monolayer ◽  
Adsorption Of Gases ◽  
Optimal Values ◽  
The Individual ◽  
Mobile Adsorption

Isotherms of trichlorofluoromethane and trichloromethane adsorption on to the surface of P-33 graphitized carbon black measured at different temperatures have been described theoretically by applying the model of the partially mobile adsorption monolayer. It has been shown that the optimal values of the individual model parameters depend on the temperature according to the physical sense of these quantities.

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