APPLICATION OF ACOUSTOPHORESIS IN A STUDY ON SOLUTE SUPPORT INTERACTIONS FOR THE PREPARATION OF SUPPORTED COBALT MOLYBDENUM CATALYSTS

Acoustophoresis has been used to investigate the interaction between s uspended mineral oxides (SiO2 and Al2O3) and aqueous solutions of coba lt (II) chloride, molybdenum (III) chloride and ammonium heptamolybdat e (AHM) as a function of the pH. The measured electrokinetic sonic amp litude (ESA) is directly related to the zeta-potential and gives infor mation on the iso-electric point of the mineral oxides, that are used as supports for catalysts. The interaction between the solutes and the suspended mineral oxides is an important parameter for the preparatio n of supported catalysts, which can be studied perfectly by means of a coustophoresis. The specific adsorption of cobalt and molybdenum on si lica and alumina has been considered.