The external surface of microporous carbons, derived from adsorption and immersion studies
β Scribed by H.F. Stoeckli; F. Kraehenbuehl
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 331 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0008-6223
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β¦ Synopsis
Three typical samples of active carbons have been investigated by using immersion calorimetry and adsorption techniques (t-plot, t/F method of Dubinin and direct anafysis of the adsorption isotherm before and after prefilling), in order to obtain their external surface area. The different techniques lead to consistent results.
π SIMILAR VOLUMES
Two series of activated carbons were prepared from pure polyfurfuryl alcohol and polyvinylidene chloride by gasification with carbon dioxide at 850Β°C. Micropore volumes in these carbons were estimated by adsorption of carbon dioxide (273K) using Dubinin theory, by adsorption of nonane (273K) and by
Data for water adsorption at 293 K by an activated series and a heat-treated series of PVDC based carbons are reported. Type 5 (BDDT) isotherms were obtained for adsorption by each carbon. Total water adsorption volumes (a,) are lower than total pore volumes and Dubinin-Radushkevich micropore volume
## Abstract The heats of adsorption of nitrogen, argon, xenon, pentane, cyclohexane and benzene on a typical microporous carbon have been measured by gasβsolid chromatography. An overall comparison of the limiting heats of adsorption on active carbons and on graphitized carbon blacks shows a ratio