Comparative adsorption study on carbons from polymer precursors

Research output: Contribution to journalArticle

68 Citations (Scopus)

Abstract

The effect of the precursor polymer on nitrogen adsorption properties, pore size distribution and the hydrophilic/hydrophobic character of both the pyrolyzed char and the activated carbon was studied in the case of three basically different polymers, i.e. polyacrylonitrile, polyethyleneterephthalate and cellulose. Pyrolyzed samples were produced from these polymers and activated by steam at 900 °C. After a 50% burn-off, the pore volume and the specific surface area increase significantly and the pore size distribution is determined by that of the pyrolyzed char, i.e. the starting polymer. The activated sample derived from polyacrylonitrile is microporous, while the other two carbons contain both micro- and mesopores. Activation creates pores which are equally available for methanol and benzene and the heterogeneous surfaces become more benzophilic in all three polymers. The N-content has limited effect on the surface properties studied.

Original languageEnglish
Pages (from-to)1965-1976
Number of pages12
JournalCarbon
Volume38
Issue number14
DOIs
Publication statusPublished - 2000

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Polymers
Carbon
Adsorption
Polyacrylonitriles
Pore size
Steam
Benzene
Cellulose
Specific surface area
Activated carbon
Surface properties
Methanol
Nitrogen
Chemical activation
polyacrylonitrile

ASJC Scopus subject areas

  • Materials Chemistry

Cite this

Comparative adsorption study on carbons from polymer precursors. / László, K.; Bóta, A.; Nagy, L.

In: Carbon, Vol. 38, No. 14, 2000, p. 1965-1976.

Research output: Contribution to journalArticle

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