Deactivation of Honeycomb Cermet Catalysts after Stability Tests in an Industrial Coal Conversion Reactor

Honeycomb cermet catalysts were studied before and after stability tests in a fluidized-bed coal reactor with a capacity of 3 Gcal/h. The catalysts were studied by X-ray diffraction analysis and scanning microscopy with elemental analysis; their textural and strength characteristics were analyzed. The octane oxidation test reaction was used as a measure of catalytic activity. A 30–40% decrease in activity was found with decreasing strength from 26 to 18 MPa. Based on the obtained change in properties, the time of operation of the catalyst was predicted to be at least two winter seasons.