Artículo
Surface area measurements with linear adsorbates: An experimental comparison of different theoretical approaches
Rawat, D. S.; Migone, A. D.; Riccardo, Jose Luis
; Ramirez Pastor, Antonio Jose
; Romá, Federico José
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Fecha de publicación:
08/2009
Editorial:
American Chemical Society
Revista:
Langmuir
ISSN:
0743-7463
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The specific area of a substrate was determined from the results of adsorption isotherms performed with a sequence of four alkanes, from methane to butane, using three different approaches. The data were first analyzed using the BET equation and the point B methods; these results were compared with those obtained using a new equation designed for examining the case of multisite occupancy. The new model specifically accounts for sites that are left uncovered in the case of adsorption by linear adsorbates. Of these three, only the last method gives essentially the same value for the specific surface area of the substrate when different adsorbates are used to measure it. The other two, more traditional, approaches give values of the specific surface area that decrease as the length of the adsórbate used increases.
Palabras clave:
ADSORPTION
,
SIMULATION
,
MULTILAYER
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Articulos(INFAP)
Articulos de INST. DE FISICA APLICADA "DR. JORGE ANDRES ZGRABLICH"
Articulos de INST. DE FISICA APLICADA "DR. JORGE ANDRES ZGRABLICH"
Citación
Rawat, D. S.; Migone, A. D.; Riccardo, Jose Luis; Ramirez Pastor, Antonio Jose; Romá, Federico José; Surface area measurements with linear adsorbates: An experimental comparison of different theoretical approaches; American Chemical Society; Langmuir; 25; 16; 8-2009; 9227-9231
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