Artículos de revistas
Surface And Structural Features Of Pt/ceo 2-la 2o 3-al 2o 3 Catalysts For Partial Oxidation And Steam Reforming Of Methane
Registro en:
Applied Catalysis B: Environmental. , v. 107, n. 03/04/15, p. 221 - 236, 2011.
9263373
10.1016/j.apcatb.2011.07.012
2-s2.0-80052283956
Autor
Mortola V.B.
Damyanova S.
Zanchet D.
Bueno J.M.C.
Institución
Resumen
Mixed xCeO 2-yLa 2O 3-Al 2O 3 oxides (where x+y=12wt%) were prepared by sol-gel method. It was shown that the mixed oxides are suitable carriers for supported Pt catalysts. The catalytic performances of the catalysts were evaluated in the reaction of stem methane reforming (SMR) and partial oxidation of methane (POM). The effect of the support kind on the surface and structural properties, as well as on the redox and catalytic behavior of the catalyst was studied. It was shown that the coexistence of the Pt 0/Pt δ+ and Ce 4+/Ce 3+ redox couples leads to the increase of the CH 4 conversion and carbon resistance over Pt catalysts. The CeO 2-containing catalysts showed the highest TOFCH4 values in SMR in spite of the low metal dispersion that is related to the high capacity of the surface to carbon cleaning caused by the highest oxygen mobility at metal-support interface. 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