INVESTIGADORES
MUNERA AGUDELO John Fernando
artículos
Título:
Kinetics and reaction pathway of the CO2 reforming of methane on Rh supported on lanthanum-based solid
Autor/es:
JOHN F. MÚNERA, SILVIA IRUSTA , LAURA M. CORNAGLIA, EDUARDO A. LOMBARDO, DEBORAH VARGAS CESAR , MARTIN SCHMAL
Revista:
JOURNAL OF CATALYSIS
Editorial:
Elsevier
Referencias:
Lugar: Amsterdam; Año: 2006 vol. 245 p. 25 - 34
ISSN:
0021-9517
Resumen:
Rh/La2O3 catalysts are very stable for the dry reforming of methane. To understand this catalytic behavior, this system was thoroughly characterized using a battery of instrumental techniques: XRD, LRS, DRIFTS, and XPS. The data obtained with the fresh calcined and reduced solids during reaction and after use, at both the volumetric and surface levels, led to a satisfactory description of the working catalyst that in turn suggested a possible eaction mechanism. It is proposed that the slow steps are both the decomposition of methane (C+2H2) and the reaction of the carbon species left on the surface with the oxycarbonates present in the working catalyst. The kinetic data obtained by varying the reactant partial pressures between 2.5 and 40 kPa in the temperature range of 823903 K is well fitted by the kinetic equation derived from the proposed reaction mechanism.