Studies on the catalytic decomposition of nitrous oxide on lanthanum cobaltate

The catalyst LaCo₂O₄ crystallizing in CaFe₂O₄ type structure has been synthesized and its physicochemical characteristics evaluated. The kinetics of decomposition of nitrous oxide, studied in the temperature range 400–460°C at 50 and 200 Torr of the reactant gas, was found to obey an expression corresponding to strong inhibition by product oxygen. A reaction mechanism has been proposed based on the existence of Co²⁺–O^2––Co³⁺ clusters on the surface.

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LaCo₂O₄, CaFe₂O₄, - -. , - 400–460°C 50 200 Qu , -, . Co²⁺–O^2––Co³⁺ .