A new isotherm for multilayer gas adsorption on heterogeneous solid surfaces

چکیده مقاله

In the present study, multilayer gas adsorption on the heterogeneous solid surface has been studied. By considering the heterogeneity of solid surface, a new isotherm for studying multilayer adsorption has been derived. By the use of some assumptions, a new equation for multilayer adsorption on heterogeneous solid surface has been derived. The new isotherm has been analyzed by some of the experimental data of multilayer adsorption at solid/ gas interface. A comparison between the new equation and BET isotherm has been provided. The results showed that the new equation has a good conformity with experimental data. It was shown that the new isotherm has more applicability in comparison with BET isotherm.