Results 211 to 220 of about 473,617 (281)
Some of the next articles are maybe not open access.
Langmuir and BET theories (kinetic isotherms)
1991The success of kinetic theories directed toward the measurements of surface areas depends upon their ability to predict the number of adsorbate molecules required exactly to cover the solid with a single molecular layer. Equally important is the cross-sectional area of each molecule or the effective area covered by each adsorbed molecule on the surface.
S. Lowell, Joan E. Shields
openaire +1 more source
"Ghost-Isotherms". Problems with Cleaning Langmuir Troughs
Langmuir, 1995Fluff-free precision paper wipes are widely used for cleaning Langmuir troughs with organic solvents. The results presented in this article show that paper tissues often contain surface-active agents, which may lead to the measurement of incorrect surface pressure-area isotherms.
P. B. Schneider +2 more
openaire +1 more source
Comparison of linearization methods for modeling the Langmuir adsorption isotherm
, 2019The Langmuir isotherm model is widely used for modeling adsorption equilibrium data. The linearization method is mostly applied for estimations of the Langmuir parameters. However, it is not unified and requires further study.
Xuan Guo, Jianlong Wang
semanticscholar +1 more source
A Statistical Derivation of Langmuir's Adsorption Isotherm
Mathematical Proceedings of the Cambridge Philosophical Society, 1935The commonest form of Langmuir's adsorption isotherm iswhere θ is the fraction of the surface of the solid covered by adsorbed molecules, p the gas pressure in equilibrium with the adsorbed layer and A = A (T) a function of the temperature alone.
openaire +2 more sources
Surface Pressure Isotherm for the Fluid State of Langmuir Monolayers
The Journal of Physical Chemistry B, 2006The equation of state for the monolayer comprised of the molecules of different sizes (water and biopolymers) is modified to describe the fluid (liquid-expanded and gaseous) state of the insoluble molecules monolayer. In contrast to the equation of state derived previously in ref 1, this equation does not involve either the Gibbs' adsorption equation ...
Fainerman, V., Vollhardt, D.
openaire +3 more sources
Langmuir adsorption isotherm forSulfolobus acidocaldarius on coal particles
Biotechnology Letters, 1987Sulfolobus acidocaldarius attachment to coal particles was observed in 20% coal slurry at 72°C and pH 2.0. The rate and extent of attachment were determined and the data fit the Langmuir adsorption model. The results compared qualitatively with selected adsorption data from other investigators forThiobacillus ferrooxidans.
Chi-Yu Chen, Duane R. Skidmore
openaire +1 more source
Langmuir Isotherms of Quenched and Annealed Polyelectrolyte Brushes
Langmuir, 2000We report here Langmuir isotherms of diblock copolymers containing a short neutral hydrophobic sequence (polystyrene) and a long water-soluble polyelectrolyte sequence (polyvinyl-2-pyridine). This study focuses on the polyelectrolyte sequence, which is a weak polyelectrolyte when unmodified and strong polyelectrolyte when quaternized.
C. Prinz, P. Muller, M. Maaloum
openaire +1 more source
The Napa Soil; Langmuir Isotherm Adsorption Equation
2020Napa soil is natural material that is used by West Sumatra people as medicine of stomachache and diarrhea. Napa soil highly contains SiO2 and Al2O3, the presentation is SiO2 63.20 % and Al2O3 16.55%. Thus, napa soil can be used as alternative material as source of silica and it is hoped that it can be used as potential inorganic m aterial as adsorbent,
openaire +1 more source
Quantitative analysis of compression isotherms of fullerene C60 Langmuir layers
Colloid Journal, 2008The structure of fullerence C60 Langmuir layers formed from a solution in cyclohexane has been determined from their compression isotherms. The layer structure, in particular, the size of formed aggregates, has been shown to depend on the initial surface concentration of fullerene. A quantitative model of the Langmuir layer has been proposed.
L. A. VALKOVA +2 more
openaire +2 more sources
Supercritical fluid simulated moving bed chromatography II. Langmuir isotherm.
Journal of chromatography. A, 2001The simulated moving bed (SMB) technology offers the possibility of scaling up single column, batch chromatographic separations to continuous operation. This has proved particularly effective for the separation of enantiomers, and has been applied in the liquid and gas phase, as well as using a supercritical fluid as eluent (SF-SMB).
O. D. Giovanni +5 more
openaire +2 more sources