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Studies on the catalytic decomposition of nitrous oxide on lanthanum cobaltate

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Abstract

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+−O2−−Co3+ clusters on the surface.

Abstract

Катализатор LaCo2O4, кристаллизующийся со структурой подобной CaFe2O4, был синтезирован и его физико-химические характеристики были определе-ны. Кинтеика разложения закиси азота, исследованная в интервале темпе-ратур 400–460°C при 50 и 200 торрах реагируQuщего газа, подчиняется вы-ражению, соответствующему сильному ингибированию продуктом кислорода. Механизм реакции основан на существовании кластеров Co2+−O2−−Co3+ на поверхности.

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Authors and Affiliations

  1. Department of Chemistry, Indian Institute of Technology, 600 036, Madras, India

    K. M. Rao & V. Srinivasan

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  1. K. M. Rao
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  2. V. Srinivasan
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Rao, K.M., Srinivasan, V. Studies on the catalytic decomposition of nitrous oxide on lanthanum cobaltate. React Kinet Catal Lett 25, 261–266 (1984). https://doi.org/10.1007/BF02064412

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  • DOI: https://doi.org/10.1007/BF02064412

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