Results 231 to 240 of about 450,852 (275)

A comprehensive investigation of expired dextromethorphan HBr drug as a carbon steel corrosion inhibitor using gravimetric, electrochemical, and theoretical computational approaches. [PDF]

Sci Rep
Khafagy ES, Lila ASA, Ashmawy AM, Deyab MA.   +3 more
europepmc   +1 more source

Effect of Small Molecule Organic Matter on CH₄ Adsorption and Desorption Characteristics in Coal. [PDF]

J Phys Chem B
Zhao T, Lv Y, Zhang H, Song C, Tao W, Chai H, Du S, Gao K.   +7 more
europepmc   +1 more source

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Physical Adsorption Strength in Open Systems

The Journal of Physical Chemistry B, 2006
For a physical adsorption system, the distances of adsorbates from the surface of a substrate can vary significantly, depending on particle loading and interatomic interactions. Although the total adsorption energy is quantified easily, the normalized, per-particle adsorption energies are more ambiguous if some of these particles are far away from the ...
M Todd, Knippenberg, Steven J, Stuart, Alan C, Cooper, G P, Pez, Hansong, Cheng   +4 more
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REVERSIBILITY IN PHYSICAL ADSORPTION

Canadian Journal of Chemistry, 1955
The question of reversibility and equilibrium is considered in relation to the physical adsorption of gases on finely divided solid surfaces. Conclusions are drawn from calorimetric measurements of (1) adsorption isotherms, (2) integral, differential, and isosteric heats of adsorption, and (3) heat capacity of the adsorbed phase for surface coverages ...
E. L. Pace, K. S. Dennis, S. A. Greene, E. L. Heric   +3 more
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Physical adsorption near an oblique corner

Physical Review B, 1990
We study physical adsorption of multilayer liquid films in the vicinity of an oblique corner formed by the intersection of two planar surfaces. This is a simplified example of the geometry in a porous medium. The film-vapor interface is determined by minimizing the free energy of the system.
, Cheng, , Cole
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Physical adsorption behavior of molecular solids

Journal of Colloid and Interface Science, 1968
Abstract The physical adsorption of nitrogen at 77°K and 90°K is reported for the molecular solids ammonia, methanol, carbon dioxide, benzene, iodine, and bromine. The adsorption isotherms are similar to those previously observed with ice powder and the entire set of molecular solids appears to constitute a group of nonpolar, low-energy adsorbents ...
LEON M. DORMANT, ARTHUR W. ADAMSON
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Physical Adsorption Measurement: Preliminaries

2004
The adsorbed amount as a function of pressure can be obtained by volumetric (manometric) and gravimetric methods, carrier gas and calorimetric techniques, nuclear resonance as well as by a combination of calorimetric and impedance spectroscopic measurements (for an overview see refs [1–3]).
S. Lowell, Joan E. Shields, Martin A. Thomas, Matthias Thommes   +3 more
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Physical adsorption and surface plasmons

Progress in Surface Science, 1977
Abstract The quantum mechanical formulation of the screening of a point charge by surface plasmons is extended to describe the coupling of a fluctuating atomic dipole with a metallic surface of planar, spherical or cylindrical shape. This allows for the calculation of the nonretarded Van der Waals attraction of an atom by a solid surface in the three
M Schmeits, A.A Lucas
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Dispersion forces in physical adsorption

Journal of the Chemical Society, Faraday Transactions 2, 1974
The concept of dispersion self-energy of a molecule of finite size is used to study the role of dispersion forces in physical adsorption on dielectric surfaces. The adsorption energy, given in terms of readily accessible macroscopic data, remains always finite, enabling the removal of a phenomenological parameter which occurs in previous theories ...
Jagadishwar Mahanty, Barry W. Ninham
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Theory of Physical Adsorption

1952
Publisher Summary This chapter presents the aspects of the statistical thermodynamical theory of physical adsorption, describes the present state of the theory of physical adsorption, starting with the simplest case of essentially independent molecules on a surface and then considers monolayer adsorption with interactions and multilayer adsorption ...
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