ABSTRACT
The gas adsorption process has been investigated since the time it was first identified
by Scheele in 1773. Nowadays it is recognized that there is a large number of
phenomena in which adsorption is involved. At the risk of being simplistic, there
are two main interests that attract the attention of researchers to study adsorption.
First we must mention the idea of characterizing the surface of solids through the
behavior of the adsorbed phase. This goal represents the applied side of the issue.
The second interest is a basic one since adsorption phenomena allow the
investigation of interaction forces in a variety of systems and conditions, and to
investigate new states of matter.
