INVESTIGADORES
LABORDE miguel angel
congresos y reuniones científicas
Título:
Behaviour of Rh and Ni catalysts in the steam reforming of ethanol
Autor/es:
C. GRASCHINSKY; I. LLERA; N. AMADEO; M. LABORDE
Lugar:
Campinas
Reunión:
Workshop; 6th International Workshop on Hydrogen and Fuel Cells WICaC 2012; 2012
Institución organizadora:
UNICAMP
Resumen:
It was carried out a
comparative study of the ethanol steam reforming over RhMgAl2O4/Al2O3
(RhMgAl) and a double laminar hydrotalcite Ni/Al (NiAl). By products
distribution reaction schemes for each catalyst were obtained. It was observed
that with RhMgAl CO yield, undesirable product if the H2
would be employed in PEM cells, is greater than the CO yield obtained with
NiAl. It was studied the reaction mechanism and was determined that in both
catalysts two active sites of the same type are involved in rate-determining
step. Finally, kinetic constants and activation energy were determined. Greater
kinetic constants were obtained for RhMgAl. It was determined that over RhMgAl
the reaction of ethanol decomposition to CO is favored; otherwise over NiAl the
reaction which is favored is the ethanol steam reforming.