INCAPE 05401
INSTITUTO DE INVESTIGACIONES EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Unidad Ejecutora - UE
artículos
Título:
The effect of electroless plating time on the morphology, alloy formation and H2 transport properties of Pd-Ag composite membranes
Autor/es:
-M.L. BOSKO, E.A. LOMBARDO, L.M. CORNAGLIA
Revista:
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Año: 2011 vol. 36 p. 4068 - 4078
ISSN:
0360-3199
Resumen:
The effect of plating times and metal deposition sequence on the morphology of PdeAg films on porous supports and also on alloy formation has been investigated. PdeAg composite membranes were prepared by electroless plating; the substrates were modified using dip coated alumina and in situ hydrothermal synthesis of NaA zeolite with secondary growth. The chemical and physical phenomena involved in the atomic diffusion during the thermal treatment as well as the crystalline structure were tracked by scanning electron microscopy, energy-dispersive X-ray analysis, X-ray photoelectron spectroscopy, and X-ray diffraction. In order to isolate the main component of the hydrogen transport (solution-diffusion mechanism), the composite membranes were considered as layers in series, with porous and dense parts; the porous areas were modeled by the dusty gas model. This allowed a more accurate estimation of Sieverts transport parameters and a critical comparison with data reported in the literature.
