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Effect of Hydrogen Treatment on the Catalytic Activity of Iron Oxide Based Materials Dispersed Over Activated Carbon: Investigations Toward Hydrogen Peroxide Decomposition

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Abstract

The effect of hydrogen treatment (400 °C/1 h) on the catalytic properties toward H2O2 decomposition of iron oxide based materials dispersed over activated carbon were investigated. Two different supports were evaluated: a commercial activated carbon (ACM) and an activated carbon produced from spent coffee grounds (ACR). The catalysts were characterized using XRD, SEM, N2-sorption, XPS and TPR analysis. The main results suggest the formation of composites with high surface area (>800 m2 g−1) and the hydrogen treatment resulted in a great increase in the catalytic activity, probably as a function of the reduced iron species (Fe2+ and Fe0) formed with the treatment. Moreover, the catalyst prepared with ACR showed to be more active than that prepared from ACM.

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Acknowledgements

The authors are grateful to the FAPEMIG and CNPq (Brasil) for financial support and to CAPQ-UFLA due to analysis concession.

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Authors and Affiliations

  1. Departamento de Química, Universidade Federal de Lavras, Caixa Postal 37, Lavras, MG, CEP 37200-000, Brazil

    Cínthia S. Castro, Luiz C. A. Oliveira & Mário C. Guerreiro

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  1. Cínthia S. Castro
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  2. Luiz C. A. Oliveira
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  3. Mário C. Guerreiro
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Correspondence to Cínthia S. Castro.

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Castro, C.S., Oliveira, L.C.A. & Guerreiro, M.C. Effect of Hydrogen Treatment on the Catalytic Activity of Iron Oxide Based Materials Dispersed Over Activated Carbon: Investigations Toward Hydrogen Peroxide Decomposition. Catal Lett 133, 41–48 (2009). https://doi.org/10.1007/s10562-009-0167-9

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  • DOI: https://doi.org/10.1007/s10562-009-0167-9

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