Characterization of the microporous structure of activated carbons through different approaches
- BUAP, Puebla (Mexico). Centro de Investigacion de la Facultad de Ciencias Quimicas
The characterization of the porosity of three samples of commercial activated carbons, from adsorption isotherms of N{sub 2} (77 K), obtained by the volumetric methods are presented. Special care was taken in the measurement of the isotherms in the range of low relative pressures (10{sup {minus}6}) in order to characterize the microporosity of these carbons by different approaches: Dubinin-Radushkevich (D-R), {alpha} plots, Jaroniec-Choma (J-Ch), and Pfeifer et al. Microporosity characterization was completed by measurement of the specific surface area (BET) of the adsorbents in which different amounts of benzene at 295 K had been preadsorbed. It was established that the three samples are basically microporous, with a strongly pronounced structural and energetic heterogeneity.
- OSTI ID:
- 345346
- Journal Information:
- Industrial and Engineering Chemistry Research, Journal Name: Industrial and Engineering Chemistry Research Journal Issue: 4 Vol. 38; ISSN IECRED; ISSN 0888-5885
- Country of Publication:
- United States
- Language:
- English
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