Artículo
Application of pressure programmed absorption and desorption to characterize hydriding and dehydriding kinetics of LaNi5 during activation
Fecha de publicación:
10/2007
Editorial:
Elsevier Science SA
Revista:
Journal of Alloys and Compounds
ISSN:
0925-8388
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Hydriding and dehydriding kinetics is an important aspect of the reaction of hydrogen with different hydride forming materials. In particular, it is a key factor in several applications of hydrogen from an energetic point of view. We present here the use of a recently developed technique to characterize hydrogen absorption and desorption kinetics: pressure programmed absorption and desorption (PPAD). The technique is based on an isothermal pressure-ramped measurement of the hydriding and dehydriding rate, and its principal advantages are the absence of an initial blind period, the short time required to complete an experimental run, and the possibility to automatically perform consecutive hydrogen absorption and desorption cycles. To illustrate this, we present the use of PPAD to follow the evolution of hydriding and dehydriding kinetics of LaNi5 during the activation process. Additionally, we analyze the effect of using hydrogen with different purity levels.
Palabras clave:
HYDROGEN ABSORBING MATERIALS
,
METAL HYDRIDES
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Articulos(CCT - PATAGONIA NORTE)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Articulos(IFIR)
Articulos de INST.DE FISICA DE ROSARIO (I)
Articulos de INST.DE FISICA DE ROSARIO (I)
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Articulos de SEDE CENTRAL
Citación
Fuster, Valeria de Los Angeles; Castro, Facundo; Urretavizcaya, Guillermina; Application of pressure programmed absorption and desorption to characterize hydriding and dehydriding kinetics of LaNi5 during activation; Elsevier Science SA; Journal of Alloys and Compounds; 446-447; 10-2007; 224-227
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