SELECTIVE OXIDATION OF HYDROCARBONS ON V-CONTAINING AND OR CO-CONTAINING ALUMINOPHOSPHATE (MEAPO-5) USING MOLECULAR-OXYGEN/

MeAPO-5 (Me = V, Co, Mg) and MeVAPO-5 (Me = Co, Mg) were prepared by h ydrothermal synthesis and they were characterized by N-2 adsorption, X RD, FTIR of piridine adsorption/desorption, TPR and UV-visible spectro scopy. For comparative purpose, MgO- and Al2O3-supported vanadium cata lysts were also prepared. Their catalytic properties for the oxidative dehydrogenation (ODH) of ethane and the oxidation of cyclohexane were studied. The ODH of ethane was studied, at atmospheric pressure, in t he 500-600 degrees C temperature interval, with an ethane/oxygen/heliu m molar ratio of 4/8/88. The oxidation of cyclohexane was studied at 1 25 degrees C and an oxygen pressure of 10 kg/cm(2). Different catalyti c behaviour was observed depending on the transition metal incorporate d, the catalyst structure and the reaction studied. The importance of the redox and the acid character of the catalysts on their catalytic p roperties is discussed.