INVESTIGADORES
MUNERA AGUDELO John Fernando
artículos
Título:
Stability of Ni and RheNi catalysts derived from hydrotalcitelike precursors for the partial oxidation of methane
Autor/es:
DEBORAH V. CESAR , MARIA A.S. BALDANZA, CRISTIANE A. HENRIQUES, MARTÍN SCHMAL; FRANCISCO POMPEO, GERARDO SANTORI, NORA NICHIO; JOHN MU´NERA D, EDUARDO LOMBARDO, LAURA CORNAGLIA
Revista:
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Lugar: Amsterdam; Año: 2013 vol. 38 p. 5616 - 5626
ISSN:
0360-3199
Resumen:
In this work, NiMgAl and RhNiMgAl catalysts prepared from HTLCs precursors wereinvestigated for the Partial Oxidation of Methane (POM) at 550 and 750 C. Samples havebeen characterized by XRD, TPR, H2 chemisorption, TPSR analyses, XPS, field emissionscanning electron microscopy and Raman spectroscopy. NiMgAl catalysts with high Nicontent (40 and 16 wt%) showed high stability and high methane conversion for POM. Onthe other hand those with lower Ni content (NiHT15 and NiHT25, with 6 and 4 wt%)exhibited low catalytic activity with low H2/CO ratio (<2) and fast deactivation. InRhNiHT25 (0.6 wt. % Rh), the Ni reducibility was improved, increasing the methane conversionand hydrogen selectivity. In addition, the noticeable increase in stability wasrelated to the absence of carbon deposition after 30 h on stream at 550 C. These resultsshow that RhNiHT25 is promising for application in membrane reactors to produce highpurity hydrogen.
