Results 251 to 260 of about 531,389 (296)

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
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Adsorption equilibria and the energy of adsorption forces

Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 1957
In the case of adsorption of MgO the contributions of the first, second, and third terms of the energy of the dispersive forces, the energy of the inductive forces and the absolute magnitude of the repulsion energy constitute about 81–83, 12–14, 3, 2 and 42–48%, respectively, of the total energy of the attractive forces (dispersive and inductive).
N. N. Avgul, A. A. Isirikyan, A. V. Kiselev, I. A. Lygina, D. P. Poshkus   +4 more
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Low Energy Adsorption Desalination Technology

Advanced Materials Research, 2011
Adsorption-based desalination (AD) is attracting increasing attention because of its ability to use low-grade thermal energy to co-generate fresh water and cooling. In this paper, the working principle of the AD technology and the possible operation cycles of AD system have been described.
Jun W. Wu, Eric Jing Hu, Mark J. Biggs
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A model for selective adsorption with a localized adsorption energy

Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2010
A model for the selective adsorption phenomenon in an isotropic liquid considering a localized adsorption energy is proposed. The fundamental equations governing the adsorption phenomena are established, by considering the mass balance equation in a limited region close to the interface.
M. R. MAFRA, L. CARDOZO FILHO, F. A. P. VOLL, L. R. EVANGELISTA, R. GUIRARDELLO, BARBERO, GIOVANNI   +5 more
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ENERGY AND ENTROPY OF PROTEIN ADSORPTION

Journal of Dispersion Science and Technology, 1992
ABSTRACT Protein adsorption data. in particular adsorption isotherms and calorimetric results, are interpreted using thermodynamic arguments. Energetic and entropic contributions from the major factors that constitute the overall process are presented. With respect to the adsorption behavior the protein molecules may be classified as “rigid” or “soft”.
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Adsorption Site, Adsorption Energy, and Normal Vibration Frequency of H on Ni(100) via Total-Energy Calculations

Physical Review Letters, 1985
Density-functional total-energy calculations of H/Ni(100) show that the equilibrium H position is in the center site, $0.6{a}_{0}$ above the plane of the surface Ni atoms (with a Ni-H bond length of 1.8 \AA{}). The bridge-site minimum lies only 0.1 eV higher than the center-site minimum, whereas the top-site minimum lies about 0.3 eV higher.
, Umrigar, , Wilkins
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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 ...
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Energy transfer in adsorption. I. Experiments

Physical Review B, 1974
The angle-dependent sticking coefficients $s(\ensuremath{\varphi})$ of ${\mathrm{H}}_{2}$, ${\mathrm{D}}_{2}$, ${\mathrm{N}}_{2}$, CO, and C${\mathrm{O}}_{2}$ on W(100) and W(110) have been measured as a function of the angle of incidence $\ensuremath{\varphi}$ using a simple molecular-beam apparatus.
Ch. Steinbrüchel, L. D. Schmidt
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On the maximum energy of adsorption

Journal of Colloid and Interface Science, 1975
Abstract The Maxwell—Boltzman—Langmuir isotherm proposed in a previous publication has been extended to account for the existence of a maximum energy of adsorption. With this modification the isotherm has been fitted to extensive data for the adsorption of K r and X e on Pyrex and from such fitting we have found that the maximum energy for ...
Bruno Kindl, Bohdan W Wojciechowski
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Adsorption energies of single charged polymers

Europhysics Letters (EPL), 2005
We peel off cationic and anionic polyelectrolytes from different substrates (cationic, hydrophobic and metallic) with the atomic force microscope (AFM). By varying the salt concentration, the measured plateau forces can be separated into electrostatic and non-electrostatic contributions to the adsorption energy.
C Friedsam, H. E Gaub, R. R Netz
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