Surface Modification of Cobalt‐Manganese Mixed Oxide and Its Application for Low‐Temperature Propane Catalytic Combustion

The Co−Mn mixed metal oxide was firstly fabricated using Co(NO 3 ) 2 , KMnO 4 and K 2 CO 3 . The tuned catalysts, donated as xM‐Co 3 Mn 1 (x=0, 0.025, 0.05 and 0.1), were synthesized by selective dissolve method (SD). The physicochemical properties induced by different acid concentrations on catalysts were explored via a series of characterization techniques. Compared with the original material, the catalysts treated by SD had higher advantages in enriching crystal defects, surface Co 2+ and adsorbed oxygen species as well as increasing the specific surface areas (SSA). Among acid‐treated catalysts, 0.05 M‐Co 3 Mn 1 exhibited the best catalytic activity, while the T 50 and T 90 were 71 and 117 °C lower than the original one. Meanwhile, 0.05 M‐Co 3 Mn 1 showed excellent stability and great regeneration ability.