Catalytic oxidation of emissions in combustion systems for forest biomass, using catalysts with TiO2 support

dc.contributor.authorCerda, C.
dc.contributor.authorRomero, L.
dc.contributor.authorJiménez, R.
dc.contributor.authorFuentes, G.
dc.contributor.authorCenteno, M.A.
dc.contributor.authorAlarcón N.N.
dc.date2006
dc.date.accessioned2012-02-27T03:53:23Z
dc.date.available2012-02-27T03:53:23Z
dc.date.issued2012-02-27
dc.description.abstractA study was made of the catalytic oxidation of a model mixture of effluents from forest biomass combustion equipment, consisting principally of methane (CH4), naphthalene (C10H8), carbon monoxide (CO) and oxygen-poor air (10% O2, balance N2), in a laboratory reactor, using MeOx/TiO2 catalysts (Me = Fe, Cu or Mn), prepared using incipient wetness impregnation. It was observed that the addition of metal oxides to the TiO2 increases catalytic activity in the combustion of all the contaminants present in the model effluent (CH 4, C10H8 and CO). The catalysts were characterised using the following techniques: SBET, XRD, DTG/DTA and TPD-NH 3; and from these it was observed that the support presented only the anatase phase in all the catalysts, despite having been subjected to temperatures in excess of 1.000 K during combustion. The highest acidity among all the solids tested, measured by TPD-NH3, was obtained for the FeOx/TiO2 catalysts, which were also those which showed the greatest catalytic activity. This high level of activity may be related to the formation of isolated metallic phases; i.e. hematite (Fe2O3), which would be the active phase in the combustion of C10H8 and CH4. On the other hand, with to respect to the 5 % wt. values of Me/TiO2 (Me: Fe, Cu y Mn) catalysts, the CuO/TiO2 catalyst shows greater activity than Fe2O3/TiO2 and MnOx/TiO2 for the oxidation of CO, which would be related to the formation of CuO on the TiO2 surface. The formation of mixed phases between the metals and the TiO2 was not observed. The SBET of the most active catalyst, Fe2O3/TiO2 (where Fe is 5% w/w in value), was not subject to any changes during the reaction.es
dc.formatPDFes
dc.identifier.citationJournal of the Chilean Chemical Society, Vol.51, N°4, 1015-1021, 2006es
dc.identifier.doi10.4067/S0717-97072006000400004es
dc.identifier.urihttps://hdl.handle.net/10925/788
dc.language.isoenes
dc.sourceJournal of the Chilean Chemical Societyes
dc.subjectMonóxido de carbonoes
dc.subjectCombustión catalíticaes
dc.subjectCompuestos orgánicos volátileses
dc.subjectMetanoes
dc.subjectBiomasa
dc.titleCatalytic oxidation of emissions in combustion systems for forest biomass, using catalysts with TiO2 supportes
dc.typeArtículo de Revistaes
uct.carreraIngeniería Civil Químicaes
uct.carreraIngeniería Forestales
uct.catalogadorFGEes
uct.comunidadIngenieríaes
uct.facultadFacultad de Ingenieríaes
uct.indizacionISIes
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