Results 271 to 280 of about 236,738 (314)

Adsorption on low energy surfaces

Journal of Colloid and Interface Science, 1978
Abstract Prior work on low energy surfaces has suggested that the adsorbed film is submonolayer at saturation pressure in those cases for which the liquid phase of the adsorbate vapor exhibits a finite contact angle on the solid surface. This study reports on the modification of particulate quartz by high temperature- and pressure-induced ...
James W Whalen, Patrick C Hu
openaire   +1 more source

Adsorption energy distribution functions

Colloids and Surfaces A: Physicochemical and Engineering Aspects, 1996
The adsorption energy distribution functions for nitrogen and argon adsorbed on heterogeneous surfaces are calculated. These distributions are obtained by the least-squares method. The calculated monolayer capacity is proposed as a test of the goodness of the adsorption energy distribution function.
L.E. Cascarini de Torre, E.J. Bottani
openaire   +1 more source

Energy Parameters in Adsorption

The Journal of Chemical Physics, 1962
The energy quantities for chemisorbing systems derived from calorimetry, isotherms, rate studies, and steady state measurements are analyzed. It is shown that if equilibration of the adsorbed layer occurs rapidly before evaporation (as it does for most metals) and the kinetic processes are properly identified, then the energy parameters deduced from ...
openaire   +1 more source

Adsorption Energy and Isotherms of Ions at the Electrode

The Journal of Chemical Physics, 1968
A general approach to the theory of ionic adsorption at the mercury electrode (mobile adsorption) is given. An explicit expression of the excess free energy of adsorption is derived on the basis of the method of cluster expansion as indicated by Buff and Stillinger provided that the following assumptions are made: (1) pure electrostatic coupling ...
openaire   +2 more sources

Adsorption of propene in zeolites possessing sites of different adsorption energies

Journal of Molecular Catalysis, 1989
Abstract Adsorption of propene in NaA, CoNaA and CoMgNaA was found to be non-dissociative and reversible. The strength of interaction of propene with the exchange cations decreased in the order: Co 2+ > Mg 2+ > Na + . The Henry's constants and the isosteric heat of adsorption at low coverages were determined.
I. Kiricsi, G. Tasi, P. Fejes, F. Berger
openaire   +1 more source

A note on the Gibbs energy of adsorption

Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1984
Considerations sur l'effet du remplacement de l'activite par la concentration sur l'energie de Gibbs d'adsorption des composes organiques, a partir d'une solution, sur une electrode de ...
openaire   +1 more source

Energy of adsorption forces and heat of adsorption of simple molecules on graphite

Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 1958
Adsorption energies of isolated atoms and simple nonpolar molecules on graphite were calculated on the basis solely of electric, magnetic, and geometric properties. The results of the theoretical calculation are in good agreement with experimental calorimetric data.
N. N. Avgul, A. V. Kiselev
openaire   +1 more source

The standard adsorption Gibbs energy from several adsorption isotherms

Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1990
Abstract On the basis of a common choice of standard state for the more useful adsorption isotherms, expressions for the chemical potentials at the interphase and for the adsorption isotherm are deduced. The values of Δ G ads ° reported for a given system from different isotherms are then reconsidered and analyzed and the results commented upon.
Joan Torrent, Fausto Sanz
openaire   +1 more source

Metal Adsorption and Adhesion Energies on MgO(100)

Journal of the American Chemical Society, 2002
The calormetically measured heats of adsorption of Cu, Ag, and Pb on MgO(100), previously measured in our group, are correlated with bulk properties of the metals and their sticking probabilities and film morphologies. The low-coverage heats of adsorption (when the metals are mainly in two-dimensional (2D) islands) are used to estimate metal-MgO(100 ...
Charles T, Campbell, David E, Starr
openaire   +2 more sources

Segmental adsorption energies for polymers on silica and alumina

Macromolecules, 1991
Segmental adsorption energies for polymers on inorganic solids were determined from adsorption/desorption transitions in binary solvent mixtures which were measured by thin layer chromatography. Polystyrene, poly(methyl methacrylate), poly(butyl methacrylate), poly(tetrahydrofuran) and poly(ethylene oxide) were classified according to their adsorption ...
van der Beek, G.P., Cohen Stuart, M.A., Fleer, G.J., Hofman, J.E.   +3 more
openaire   +1 more source