Water adsorption by activated carbons in relation to their microporous structure

A M Slasli, M Jorge, F Stoeckli, N A Seaton

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

The present paper examines the adsorption of water by microporous carbons in the absence of specific interactions. The modelling of water adsorption for 293 and 310 K, using variable pore size distributions (PSD), shows that the type V isotherms follow the Dubinin-Astakhov (DA) equation and fulfill the requirement for temperature invariance. Furthermore, the parameters of the DA equation can be related in a simple way to structural properties of the model carbons. For a number of well-characterized carbons, the type V isotherms generated by combining model isotherms with the corresponding PSDs are in good agreement with the limiting isotherms at 293 and 310 K derived on the basis of a recent development of Dubinin's theory. This approach will provide the basis for further studies including specific interactions.

Original languageEnglish
Pages (from-to)479-486
Number of pages8
JournalCarbon
Volume41
Issue number3
DOIs
Publication statusPublished - 2003

Keywords

  • activated carbon
  • adsorption
  • modelling
  • microporosity

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