Catalizadores de Ni soportados en MgAl2O4 modificados con Pr para la producción de hidrógeno mediante reacción de reformado de etanol con vapor

BARROSO MARIANA N.; GOMEZ MANUEL F; ARRÚA LUIS A; ABELLO M. CRISTINA

Cón-Cón - Viña del Mar - Chile

Congreso; XXII CICAT Congreso Iberoamericano de Catálisis; 2010

MgAl2O4 spinel oxide-supported Ni catalysts modified with Pr, have been prepared by the wet impregnation method with 8 wt.% Ni and variable loadings of Pr (0, 1, 3 and 5 wt.%). The samples were characterized by XRD, BET area, TPR, SEM and TPO and they were tested in the ethanol steam reforming reaction. The XRD of the samples revealed the formation of spinel phase MgAl2O4, NiO and weak lines of PrO2. The increase of Pr content in the catalyst increased stability and resistance to carbon deposition. Under reactive conditions, the system with 5 wt.% Pr was very active. This catalytic system, although it presented filamentous, did not show deactivation during the reaction time. The amount and type of carbon deposit were depended on the Pr loading.