The Modification of Ni3Al Intermetallic Compound with Chromium and Tungsten for Carbon Dioxide Reforming of Methane to Synthesis Gas

Catalytic systems based on the Ni3Al intermetallic compound and modified with chromium and tungsten were studied in carbon dioxide reforming of methane. The catalysts were prepared by the self-propagating high-temperature synthesis method. The phase composition of the catalytic systems was determined by X-ray diffraction. The catalytic activity of the samples increased as the concentration of dopants decreased and was maximum at 2 wt % Cr and W. Scanning electron microscopy studies showed that the catalytic system underwent substantial structural changes responsible for catalytic activity loss with time.