Oxidative dehydrogenation of ethane and propane over Mn-based catalysts

The catalytic performances of Mn-based catalysts have been investigated for the oxidative dehydrogenation of both ethane (ODE) and propane (ODP). The results show that a LiCl/MnOx/PC (Portland cement) catalyst has an excellen t catalytic performance for oxidative dehydrogenation of both ethane and pr opane to ethylene and propylene, more than 60% alkanes conversion and more than 80% olefins selectivity could be achieved at 650 degrees C. In additio n, the results indicate that Mn-based catalysts belong to p-type semiconduc tors, the electrical conductivity of which is the main factor in influencin g the olefins selectivity. Lithium, chlorine and PC in the LiCl/MnOx/PC cat alyst are all necessary components to keep the excellent catalytic performa nce at a low temperature.