The surface film pressure computations from the adsorption data of organic vapours on carbon black

Abstract

T 955 42*

Thermodynamics of adsorption (as a function of temperature and pressure) of N2 and CO2 on graphites

“…In this connection calculation from experimental data of various thermodynamic functions, namely, qst, the isosteric heat of adsorption and ~r, the surface film pressure have been reported (1,2). In particular the statistical interpretation of the adsorption thermodynamic functions have been of considerable value.…”

“…In particular the statistical interpretation of the adsorption thermodynamic functions have been of considerable value. [2], keeping the intensity factors constant, followed by differentiation, leads to dG = #~dn q-nd#1 -x d A --A d m [3] Hence from equations [2] and [3], Studies on simple adsorption systems are often useful to understand surface interactions through the precise quantitative estimation of the free energy changes, associated with adsorbent surfaces and then through the calculation of allied thermodynamic functions in order to get microscopic information for various adsorption systems.…”