An investigation on the N2O decomposition activity of MnxCo1 xCo2O4 nanorods prepared by the thermal decomposition of their oxalate precursors

An investigation on the N2O decomposition activity of MnxCo1 xCo2O4 nanorods prepared by the thermal decomposition of their oxalate precursors

This investigation aimed to develop a series of new spinel-oxide catalysts with the general formulaMnxCo1 xCo2O4 (0.0 x 1.0) and testing their activity towards N2O direct decomposition. Thesecatalysts have been prepared by the microwave-assisted co-precipitation method and the subsequentcalcination at 500 C. Characterization results revealed that the utilized preparation protocol has led tothe development of pure spinel phases with nanorods morphology. N2O decomposition experimentsindicated that the prepared catalysts were active and the best performance was exhibited byMn0.75Co0.25Co2O4 catalyst. The activity of the Mn0.75Co0.25Co2O4 was enhanced by doping with K-ions atoptimal concentration (nK/(nCo + nMn) = 0.025). The co-existence of some contaminants (O2, NO, H2Ovapor) in the reactor feed revealed different inhibitory levels on the performance of theK0.025Mn0.75Co0.25Co2O4 catalyst. The inhibitory order was O2< H2O < NO < O2 + H2O < O2 + H2O + NO.

This investigation aimed to develop a series of new spinel-oxide catalysts with the general formulaMnxCo1 xCo2O4 (0.0 x 1.0) and testing their activity towards N2O direct decomposition. Thesecatalysts have been prepared by the microwave-assisted co-precipitation method and the subsequentcalcination at 500 C. Characterization results revealed that the utilized preparation protocol has led tothe development of pure spinel phases with nanorods morphology. N2O decomposition experimentsindicated that the prepared catalysts were active and the best performance was exhibited byMn0.75Co0.25Co2O4 catalyst. The activity of the Mn0.75Co0.25Co2O4 was enhanced by doping with K-ions atoptimal concentration (nK/(nCo + nMn) = 0.025). The co-existence of some contaminants (O2, NO, H2Ovapor) in the reactor feed revealed different inhibitory levels on the performance of theK0.025Mn0.75Co0.25Co2O4 catalyst. The inhibitory order was O2< H2O < NO < O2 + H2O < O2 + H2O + NO.