Artículo
Stability of Ni and Rh–Ni catalysts derived from hydrotalcite-like precursors for the partial oxidation of methane
Cesar, Deborah V.; Baldanza, Maria A. S.; Henriques, Cristiane A.; Pompeo, Francisco
; Santori, Gerardo Fabian
; Múnera Agudelo, John Fernando
; Lombardo, Eduardo Agustin
; Schmal, Martin; Cornaglia, Laura Maria
; Nichio, Nora Nancy
Fecha de publicación:
22/03/2013
Editorial:
Elsevier Inc
Revista:
International Journal Of Hydrogen Energy
ISSN:
0360-3199
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
In this work, NiMgAl and RhNiMgAl catalysts prepared from HTLCs precursors were investigated for the Partial Oxidation of Methane (POM) at 550 and 750 C. Samples have been characterized by XRD, TPR, H2 chemisorption, TPSR analyses, XPS, field emission scanning electron microscopy and Raman spectroscopy. NiMgAl catalysts with high Ni content (40 and 16 wt%) showed high stability and high methane conversion for POM. On the other hand those with lower Ni content (NiHT15 and NiHT25, with 6 and 4 wt%) exhibited low catalytic activity with low H2/CO ratio and fast deactivation. In RhNiHT25 (0.6 wt. % Rh), the Ni reducibility was improved, increasing the methane conversion and hydrogen selectivity. In addition, the noticeable increase in stability was related to the absence of carbon deposition after 30 h on stream at 550 C. These results show that RhNiHT25 is promising for application in membrane reactors to produce high purity hydrogen.
Palabras clave:
Hydrotalcites
,
Hydrogen
,
Rh
,
Ni
,
Methane
,
Partial Oxidation
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(CINDECA)
Articulos de CENTRO DE INV EN CS.APLICADAS "DR.JORGE J.RONCO"
Articulos de CENTRO DE INV EN CS.APLICADAS "DR.JORGE J.RONCO"
Citación
Cesar, Deborah V.; Baldanza, Maria A. S.; Henriques, Cristiane A.; Pompeo, Francisco; Santori, Gerardo Fabian; et al.; Stability of Ni and Rh–Ni catalysts derived from hydrotalcite-like precursors for the partial oxidation of methane; Elsevier Inc; International Journal Of Hydrogen Energy; 38; 14; 22-3-2013; 5616-5626
Compartir
Altmétricas