ABSTRACT
In both Eqs. (3.13) and (3.14) the terms characterizing the properties of the oxygen molecule and a tom (~02' ~O, and 12.0 2) are constant. The value of ll!!B is largely determined by the nature of the atom or atoms constituting the adsorption center and depends mainly on local interactions. On the other hand, the value of <P characterizes collective electronic properties of the solid and there is no direct correlation between both factors 1l!!B and <P. The effect of the electronic factor in chemisorption (and catalysis) can best be studied using a series of samples of an oxide doped with different amounts of the dopant changing the position of the Fermi levelexamples of such studies will be presented in Chapter 5-or studying the kinetics of chemisorption. In all these cases the nature of the bond in the adsorption complex does not change and in Eqs. (3.13) and (3.14) the changes in <P determine the changes in ll!!ads.
