Textural study of a commercial pyrolytic graphite by physical adsorption of gases

The adsorption isotherms of N 2 and Ar at 77 and 90 K on a pyrolytic graphite produced by Union Carbide (U.S.A.) were studied. All the isotherms belong to type II of the IUPAC classification and both at 77 and 90 K neither the N 2 nor the Ar isotherms present a crossing point. The specific surface a...

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Bibliographic Details
Published in:Carbon (New York) 1988, Vol.26 (5), p.681-685
Main Authors: Ban̄ares-Muñoz, M.A., Llorente, J.M.Martín, González, L.V.Flores
Format: Article
Language:English
Subjects:
Adsorption
argon
nitrogen
pyrolytic graphite
surface area
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Summary:The adsorption isotherms of N 2 and Ar at 77 and 90 K on a pyrolytic graphite produced by Union Carbide (U.S.A.) were studied. All the isotherms belong to type II of the IUPAC classification and both at 77 and 90 K neither the N 2 nor the Ar isotherms present a crossing point. The specific surface area is calculated and compared with that of the other graphites. Using the desorption isotherm of N 2 at 77 K, porosity was studied, completing this analysis with mercury porosimetry.
ISSN:0008-6223
1873-3891
DOI:10.1016/0008-6223(88)90071-1