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Thermogravimetric evaluation of the specific surface area and total porosity of microporous carbons

โœ Scribed by D. Pan; M. Jaroniec; J. Klinik

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
522 KB
Volume
34
Category
Article
ISSN
0008-6223

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โœฆ Synopsis

A comparative study was carried out for over 20 microporous carbons using high-resolution thermogravimetry (HRTGA) and adsorption techniques. The utility of the HRTGA technique for characterization of active carbons was demonstrated by correlating the HRTGA data with adsorption measurements. The linear correlation was established between the values of the specific surface area evaluated by HRTGA for carbon samples immersed in n-butanol and n-heptane and the corresponding values obtained from argon adsorption isotherms. Analogous correlation was obtained for the total pore volumes obtained by HRTGA and adsorption techniques. It was shown for over 20 active carbons of different surface and structural properties that thermogravimetric measurements provide adequate information about sorption properties of these solids.

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