Peculiarities of Dehydrogenation and Destruction of Propane in Transitional Catalytic Systems MeVO _x (Me = La, Sm, Er)

Features of propane conversion in the presence of rare-earth metal vanadite and vanadate, both produced via solid-phase synthesis, are studied. It is shown that MeVO₃ catalyzes mainly the propane cracking process to form methane and ethylene, while MeVO₄ equally accelerates both cracking and dehydrogenation of propane. The thermal stability of MeVO₄ in a hydrogen atmosphere is studied by a temperature-programmed reduction, while the MeVO₃ stability in an oxidizing environment is studied by DTA. Energies of activation for the MeVO₃ reduction and the MeVO₄ oxidation are calculated using the Kissinger method.