CENTRO DE INVESTIGACION Y DESARROLLO EN CIENCIAS APLICADAS "DR. JORGE J. RONCO"
Unidad Ejecutora - UE
Volatile organic compound removal over bentonite-supported Pt, Mn and Pt/Mn monolithic catalysts
COLMAN LERNER ESTEBAN; PELUSO M.; JORGE ENRIQUE SAMBETH; HORACIO THOMAS
Reaction Kinetics, Mechanisms and Catalysis
Año: 2013 vol. 108 p. 443 - 443
The catalytic oxidation of volatile organic compounds (ethanol and toluene) alone and in mixturewas investigated over Pt, Mn and Pt/Mn impregnated bentonite monoliths. Their properties werecharacterized by using the Brunauer Emmett Teller (BET) method, X-ray diffraction (XRD) X-rayphotoelectron spectra (XPS) and temperature programmed reduction (TPR). Independently ofwhich catalyst was used, ethanol was more easily oxidized than toluene. In toluene oxidation, thesequence of catalytic activity was as follows: Pt/Mn/B > Pt/B > Mn/B, probably due to somefavorable synergetic effects between Pt and Mn and to the presence of Mn3+/Mn4+ species. Inethanol oxidation, Pt/Mn/B and Pt/B present similar activity, and greater than that of Mn/B.In the VOC mixture, toluene slows down the partial oxidation of ethanol towards acetaldehyde. Onthe contrary, the presence of ethanol has a promoting effect on toluene oxidation