INVESTIGADORES
CORNAGLIA Laura Maria
artículos
Título:
Hydrogen production using Ni-Rh on ZrO2 as potential low temperature catalysts for membrane reactors
Autor/es:
S. IRUSTA, L. M. CORNAGLIA, AND E. A. LOMBARDO
Revista:
JOURNAL OF CATALYSIS
Editorial:
ACADEMIC PRESS INC ELSEVIER SCIENCE
Referencias:
Lugar: Amsterdam; Año: 2002 vol. 210 p. 263 - 272
ISSN:
0021-9517
Resumen:
The CO2 reforming of CH4 over Ni?Rh mono- and bimetallic catalysts supported on ZrO2 was investigated. The catalysts were prepared by wet impregnation with 0.2 wt% Rh and 2 wt% Ni. The solids were calcined at 823 K in air flow and were reduced at 973 K in flowing hydrogen before being tested in a fixed bed reactor. The results showed that the bimetallic solid had the highest activity at 823 K but monometallic Rh was the only stable catalyst. The catalysts were characterized through XRD, XPS, and TPR. TGA, DSC, TPH, SEM, and Raman spectroscopy were used in order to characterize the carbonaceous deposits. Carbon deposits with different reactivity were detected. A low-carbon deposition was observed on Rh (0.2%)/ZrO2which exhibited a stable activity after 100 h on stream. The results suggest a significant metal?support interaction and a strong metal?metal interaction in the bimetallic solid.
