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Characterization of activated carbons by the BET equation: an alternative approach

AutorParra Soto, José Bernardo ; De Sousa, J. C.; Bansal, R. C.; Pis Martínez, José Juan
Palabras claveActivated carbons
BET equation
Carbones activos
Ecuación BET
Fecha de publicación1995
EditorMulti Science Publishing
CitaciónAdsorption Science and Technology 12(1): 51-66 (1995)
Resumen[EN]The adsorption isotherms of nitrogen at 77 K have been determined on two series of activated carbons and two samples of activated carbon fibres. The carbons were highly microporous and contained varying amounts of different forms of microporosity. Characterization of the carbons was undertaken using an alternative linear form of the BET equation and the results of the BET parameters obtained have been compared with those obtained from the usual classical linear form of the equation. The surface areas calculated from the two linear forms were similar while the C values were quite different. The C values obtained from the alternative linear form appeared to be more reasonable, being consistent with and related to the microporous character of these carbons. The alternative linear form gave BET plots which were more sensitive to deviations from linearity allowing the relative pressure range for the application of the BET equation to be determined without any ambiguity and more precisely.
URIhttp://hdl.handle.net/10261/82360
ISSN0263-6174
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