heat of adsorption

heat of adsorption

[′hēt əv ad′sȯrp·shən]
(thermodynamics)
The increase in enthalpy when 1 mole of a substance is adsorbed upon another at constant pressure.
References in periodicals archive ?
The magnitude of the heat of adsorption can provide useful information concerning the nature of the surface and the adsorbed phase.
The Freundlich isotherm is derived by assuming a heterogeneous surface with a non-uniform distribution of heat of adsorption over the surface [36], This isotherm is suitable for a highly heterogeneous surface.
The heat of adsorption of water vapor in silica aerogel was assumed to be 50 kJ/kmol.
L] indicates a binding constant which is related to the heat of adsorption All the constants are specific to test conditions and the adsorbent type.
Interestingly for benzene, a trend of slightly decreasing binding energy with increasing CNT diameter is seen for adsorption on internal sites and a much larger heat of adsorption ([E.
ads]/RT), from which the propylene heat of adsorption (-[DELTA][H.
It appears from the research that the hydrophobic nature of an amino acid or a flavor compound is not the only factor controlling the strength and spontaneity of adsorption as measured by free energy and heat of adsorption.
Finally, the Freundlich equation was used to incorporate the effect of heterogeneous surface energy in which the energy term, b, in the Langmuir equation varies as a function of surface coverage due to the heat of adsorption [14].
The LoRise(TM) technology is specifically geared toward vapor phase activated carbon applications where users are concerned that the heat of adsorption coupled with the oxidizability of the contaminants would cause bed- fires within the carbon adsorber.
This model assumes that heat of adsorption of all molecules in the layer would decrease linearly rather than logarithmic with coverage [39, 40], As implied in the equation, its derivation was carried out by plotting the quantity sorbed [q.