INCAPE   05401
INSTITUTO DE INVESTIGACIONES EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Surface Properties and Catalytic Behavior of Rh Supported on CaO-SiO2 for carbon dioxide reforming of methane
Autor/es:
B. FAROLDI; J. MÚNERA; E. FRUTIS; S. GONZALEZ CARRAZÁN; L. CORNAGLIA
Lugar:
Lyon
Reunión:
Congreso; 11th European Congress on Catalysis; 2013
Resumen:
Rhodium catalysts were active for the dry reforming of methane reaction in membrane reactors [1]. Further-more, when the La2O3-SiO2 support was used the Rh and Ru formulations were catalytically stable and did not produce carbonaceous residues. In this work, we report the results obtained with novel catalysts, Rh/CaO-SiO2. The fresh catalysts were characterized by XRD, TPR, FTIR and CO and hydrogen chemisorption. FTIR spectroscopy with CO as a probe molecule was used to study the promoter oxide role. Infrared spectra of adsorbed carbon monoxide can give valuable information about surface sites in mixed metal catalysts [2,3]. Knözinger and co-workers [2] studied the metal state on promoted Rh/SiO2 catalysts, finding that Rh(CO)2+ cations sit on the respective promoter oxide in Rh/X/SiO2 (X = Ta, Nb or V) . The SMSI state as indu-ced by high temperature (HT) reduction gave rise to changes in the relative amount of linearly to bridge-bonded CO.