Fig. 7
Effect on catalyst recyclability on (a) conversion of methane with multiple cycles involving reactivation of catalysts via flow of pure oxygen, (b) selectivity for end products, and (c) carbon balance under the experimental conditions 650 ºC, 0.8 L/min, 10 g catalyst, and CH4:O2 = 3:1. Periodic reactivation via O2 at 0.8 L/min and He -1 L/min; (d) schematic representation of secondary collision of intermediate products undergoing complete oxidation into CO2