EFFECT OF STRUCTURAL,REDOX AND ACH)CHARACTERISTICS OF M_xO_y/ZrO2(Al2O3)(M-Mn,Co,Cr)OXIDE NANOCOMPOSITES ON THEIR CATALYTIC PROPERTIES IN THE DEEP OXIDATION OF METHANE

摘要

Alumina-and zirconia-manganese catalysts for the deep oxidation of methane were studied by X-ray phase analysis,temperature-programmed hydrogen reduction,and IR spectroscopy.The most active catalyst has the optimal combination of dimensional,redox,and acid characteristics.The zirconia-manganese catalysts formed on the surface of a kaolin-aerosil honeycomb matrix provides for 80-100% conversion of methane to CO2 at 690-750°C.