GADOLINIUM-IRON FERRITES - CATALYTIC EFFECT ON THE WATER-GAS SHIFT REACTION

The effect of preparation procedure of some mixed gadolinium iron oxid es on their activity as catalysts versus the water-gas shift reaction has been investigated. The catalytic behaviour of the above ferritic m aterials, containing gadolinium orthoferrite and garnet in their compo sition, is attributed to their n- or p-semiconductive character. It is shown that a lot of the above catalysts present a remarkable catalyti c efficiency comparable and, in many cases, exceeding the activity of some industrial catalysts actually used for the water-gas conversion.