The Hydrogen Reduction Kinetics of Molybdenum Oxides

Abstract

The temperatures at which the hydrogen reduction of MoO3 and MoO2 take place were established by differential thermal analysis. The kinetics of H reduction MoO3 were determined in temperature range 350 to 600° and for MoO2 in the temperature range 600 to 850°C. It was found that the reduction of the trioxide to the dioxide, when corrected for the change in interfacial area available for reduction, follows a linear rate equation and has an activation energy of 17.6 kcal/mole. The reduction of the dioxide to the metal follows a linear rate equation without compensation for an available interfacial area, and has an activation energy of 27.4 kcal/mole.