Results 161 to 170 of about 167,523,944 (204)

Towards an accurate estimation of the isosteric heat of adsorption – A correlation with the potential theory

Journal of Colloid and Interface Science, 2017
Accurate estimation of the isosteric heat of adsorption is mandatory for a good modeling of adsorption processes. In this paper a thermodynamic formalism on adsorbed phase volume which is a function of adsorption pressure and temperature has been proposed for the precise estimation of the isosteric heat of adsorption.
Bidyut Baran Saha, Ahmed A Askalany
exaly   +3 more sources

Analysis of Adsorbate–Adsorbate and Adsorbate–Adsorbent Interactions to Decode Isosteric Heats of Gas Adsorption

ChemPhysChem, 2015
A qualitative interpretation is proposed to interpret isosteric heats of adsorption by considering contributions from three general classes of interaction energy: fluid–fluid heat, fluid–solid heat, and fluid—high-energy site (HES) heat.
Mark J. Biggs, Phillip Pendleton, S Hadi Madani   +2 more
exaly   +8 more sources

On the isosteric heat of adsorption of non-polar and polar fluids on highly graphitized carbon black

Journal of Colloid and Interface Science, 2015
Isosteric heat of adsorption is indispensable in probing the energetic behavior of interaction between adsorbate and solid, and it can shed insight into how molecules interact with a solid by studying the dependence of isosteric heat on loading.
Jesús Rafael Alcántara Avila, Toshihide Horikawa, Ken-ichiro Sotowa   +2 more
exaly   +2 more sources

Isosteric Heat of Adsorption:  Theory and Experiment

The Journal of Physical Chemistry B, 1999
The isosteric heats of adsorption of the components of a gas mixture are critical variables for design of adsorbers for gas separation. They can be unambiguously defined by the Gibbsian Surface Excess (GSE) model of multicomponent adsorption. These variables can be experimentally measured by multicomponent differential calorimetry (MDC) and directly ...
S, Sircar, R, Mohr, C, Ristic, M B, Rao
openaire   +2 more sources

Isosteric Heats of Gas and Liquid Adsorption

Langmuir, 2013
The heat of adsorption is an indicator of the strength of the interaction between an adsorbate and a solid adsorbent. This parameter can be determined from the heat released in calorimetric experiments or from the analysis of adsorption isotherms at different temperatures.
Santiago, Builes, Stanley I, Sandler, Ruichang, Xiong   +2 more
openaire   +2 more sources

Isosteric heat of adsorption for repulsive interactions

Surface Science Letters, 1991
Abstract The isosteric heat of adsorption of particles with repulsive nearest-neighbour interactions on a square lattice is calculated using the transfer matrix method. A significant diminution of enhancement of this repulsion is observed around half-coverage and at temperatures below and near the order-disorder transition.
S.H. Payne, H.J. Kreuzer, L.D. Roelofs
openaire   +1 more source

The isosteric heat of adsorption on heterogeneous surfaces

Journal of Colloid and Interface Science, 1975
Abstract A simulation of the adsorption of sorbate on a solid surface using the Langmuir isotherm for heterogeneous surfaces has been carried out in order to explain the less common shapes of the dependences of isosteric heat of adsorption upon surface coverage, experimentally observed for the adsorption of aliphatic amines on alumina.
Josef Koubek, Josef Pašek, Jiří Volf
openaire   +1 more source

Isosteric Heat: Comparative Study between Clausius–Clapeyron, CSK and Adsorption Calorimetry Methods

Processes, 2019
This work presents the calorimetric study of five adsorbents with different chemical and textural characteristics: MOF-199, MCM-41, SBA-15, activated carbon prepared from corn cob (GACKP) and graphite.
Juan Carlos Moreno-Piraján, Liliana Giraldo, Paola Rodríguez-Estupiñán   +2 more
exaly   +2 more sources

Determination of the isosteric heat of adsorption by gas adsorption chromatography

Journal of Chromatography A, 1977
Abstract The determination of the isosteric heat of adsorption by means of polynomial approximation of an experimentally obtained-function—retention volume versus adsorbate pressure—is discussed. The equation is proposed by means of which the isosteric heat of adsorption can easily be calculated by using the approximation coefficients.
J. Gawdzik, M. Jaroniec
openaire   +1 more source

Gaseous adsorption of hexamethyldisiloxane on carbons: Isotherms, isosteric heats and kinetics

Chemosphere, 2020
Volatile methylsiloxanes (VMS) are a special kind of impurity that exist in biogas and seriously hamper its utilization; therefore, their removal has attracted great attention in recent years. Adsorption is the only technology that is currently capable of industrial-scale removal of VMS.
Gang Wang, Na Li, Xin Xing, Yonggang Sun, Zhongshen Zhang, Zhengping Hao   +5 more
openaire   +2 more sources