sical characteristics of the adsorbents. such as, surface area, porosi y. size distribution, density and surface charge have high influence in the adsorption process.Asa result.there has been a great interest in developing new adsorbent materials with diverse compositions, properties and functionalities. Mixed metal oxides, ie, oxides of more than one metal system, a ofparticular interest because the opportunity exists for generating materials intermixed at atomic level. Such systems have the potential for exhibiting chemical properties that differ notably from those o sponding single component oxides 115VTransition