Temperature dependence of adsorption

Modified Dubinin–Radushkevich/Dubinin–Astakhov Adsorption Equations

“…It may be shown that the temperature dependence of parameter a 0 , which is given by expression [7] in conjunction with [8] and [9], is equivalent to that given by the original relation [2]. This may be shown by taking the logarithm of expression [7] twice followed by substitution of expression [2].…”

“…This choice was not arbitrary, because only at such a standard state is the derivative derivative −(∂ G/∂ T ) p,a , equal to the change in the differential adsorption entropy (7). The incorrect behavior of the heat, Eq.…”

“…This may be shown by taking the logarithm of expression [7] twice followed by substitution of expression [2]. The resulting relation is sequentially differentiated with respect to temperature in view of relations [8] and [9] and algebraically simplified to arrive at the identity.…”

“…Since the DR/DA equations are not only equations of isotherms but also thermal equations in the Hückel sense (6), the parameters have a temperature dependence that is known in an explicit form, which makes analytical expressions for these thermodynamic functions possible. Moreover, in this case certain thermodynamic restrictions apply to the temperature dependence of these parameters (7). Subsequently, we do not make a conceptual difference between the DR and DA equations, but rather consider the first equation as the special case of the second one when the exponent is n = 2.…”

Nanofiber-enabled multi-target passive sampling device for legacy and emerging organic contaminants

“…Temperature, particularly the range experienced across seasons, may also influence passive sampler performance including chemical uptake rate, sorption capacity and equilibrium partitioning behavior. [231][232][233][234] We Influence of ENM mass loading on sorption performance. For chemical targets with a relatively low affinity for ENMs, a useful approach to increasing the target mass collected in the field would be the use of a higher total mass of passive sampling material.…”