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Composites of manganese oxide with carbon materials as catalysts for the ozonation of oxalic acid

Authors :
Orge, C.A.
Órfão, J.J.M.
Pereira, M.F.R.
Source :
Journal of Hazardous Materials. Apr2012, Vol. 213-214, p133-139. 7p.
Publication Year :
2012

Abstract

Abstract: Manganese oxide and manganese oxide–carbon composites were prepared and tested as catalysts for the removal of oxalic acid by ozonation. Their performances were compared with the parent carbon material (activated carbon or carbon xerogel) used to prepare the composites. Oxalic acid degradation by carbon materials is slower than that attained with manganese oxide or manganese oxide–carbon composites. A complete degradation after 90 and 45min of reaction was obtained for carbon materials and for the catalysts containing manganese, respectively. The ozonation in the presence of the prepared composites are supposed to occur mainly by surface reactions, following a direct oxidation mechanism by molecular ozone and/or surface oxygenated radicals. [Copyright &y& Elsevier]

Details

Language :
English
ISSN :
03043894
Volume :
213-214
Database :
Academic Search Index
Journal :
Journal of Hazardous Materials
Publication Type :
Academic Journal
Accession number :
73777622
Full Text :
https://doi.org/10.1016/j.jhazmat.2012.01.066