The effect of commercial carbon de-ashing on its thermal stability and porosity

The effect of commercial carbon de-ashing on its thermal stability and porosity

The influence of Korver's de‐ashing procedure on the changes in the thermal stability and porosity of three commercial granular activated carbons: D43/1 (Carbo‐Tech, Essen, Germany), AHD, and WD‐extra (Hajnówka, Poland) was investigated. For original carbons, carbons treated only with concentra...

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Veröffentlicht in:Journal of chemical technology and biotechnology (1986) 1999-04, Vol.74 (4), p.329-336
Hauptverfasser: Rychlicki, G, Terzyk, A P, Majchrzycki, W
Format: Artikel
Sprache:eng
Schlagworte:
activated carbon
Chemistry
Colloidal state and disperse state
de-ashing
Exact sciences and technology
General and physical chemistry
porosity
Porous materials
thermal analysis
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Zusammenfassung:The influence of Korver's de‐ashing procedure on the changes in the thermal stability and porosity of three commercial granular activated carbons: D43/1 (Carbo‐Tech, Essen, Germany), AHD, and WD‐extra (Hajnówka, Poland) was investigated. For original carbons, carbons treated only with concentrated HCl, and completely de‐ashed carbons (treated with concentrated HCl and HF) the thermogravimetric results in air and helium, apparent and true densities, low‐temperature nitrogen adsorption, and mercury porosimetry are reported and compared. The changes in thermal stability and porosity are discussed together with the mechanism of carbon de‐ashing. © 1999 Society of Chemical Industry
ISSN:0268-2575
1097-4660
DOI:10.1002/(SICI)1097-4660(199904)74:4<329::AID-JCTB36>3.0.CO;2-Y