EFFECT OF THE EXTENT OF REDUCTION OF V2O5 ON THE ADSORPTION OF PROPYLENE AND THE OXIDATIVE DEHYDROGENATION OF PROPANE TO GIVE PROPYLENE ON V2O5 AND V2O5/TiO2-SiO2

An increase in the propylene output in the oxidative dehydration of propane on V2O5/TiO2-SiO2 was observed after prior reduction of V2O5 in the reaction mixture to V2O4, which reduces the destructive chemisorption of propylene. A low titanium dioxide content in TiO2-SiO2 hinders the deep reduction of V2O5 to V2O3, which reduces the conversion of propane.