Catalytic activation of C–H bonds of hydrocarbons by heteropolycompounds

The activation of C–H bonds of hydrocarbon over different heteropolycompounds (HPC) HPMo12O40, FePMo12O40 and PMo11FeO39 catalysts was studied. The catalysts were prepared and characterized by several physical techniques (BET, XRD, FTIR, Raman and 31P MAS NMR) and the catalytic properties evaluated in the temperature range of 250–400 °C. This study examined the relation between the acid–base, redox properties of heteropolycompounds and the reaction behavior of various hydrocarbons n-hexane, cyclohexane, cyclohexene and toluene over these catalysts. The results showed that HPC were more active and selective for the oxidation of C–H bond of hydrocarbon and have pronounced catalytic activity which depends on reaction temperatures, nature of oxo metal (Mo, Fe) in the primary structure and counter-ion (H3O+, NH4+, Fe3+).