Synthesis and catalytic activity of manganese dioxide (type OMS-2) for the abatement of oxygenated VOCs
- Peluso, Miguel Andrés
- Gambaro, Luis Alberto
- Pronsato, Maria Estela
- Gazolli, Delia
- Thomas, Horacio Jorge
- Sambeth, Jorge Enrique
DOIAbstract
Two solids were synthesized by the reaction between Mn2+ and KMnO4 in different order. The results of the characterization of both solids showed that: (i) they are poorly crystalline, although both belong to the Cryptomelane (OMS-2) phase; (ii) these materials are mesoporous (mesopores concentration in the order of 80%); (iii) they contain the couple Mn3+/Mn4+, being the Mn3+ concentration a function of the preparation method. Both catalysts were analyzed in the total oxidation of ethanol and the percentage of ethanol conversion on both solids reached 50% at 155 °C. The adsorption studies of methanol and ethanol have demonstrated the presence of basic sites and two different adsorption sites. The analysis of the results suggest that the amo...
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