Mass transport dynamics of N2 and O2 in wood-based carbon molecular sieves affected by pre-treatments and comminution

György Onyestyák, Zsolt Ötvös, Katalin Papp

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Carbon honeycomb adsorbents having molecular sieve characteristics were prepared by controlled single-step carbonization from 1 × 1 × 1 cm3 cubes of spruce wood. The carbonized xylem retained the original tracheal structure of the wood. The obtained three-dimensional frame exhibits low transport diffusional resistance due to the wide straight micron sized channels. The wood-based carbon molecular sieve (CMS) samples, synthesized in various ways, were characterized by their dynamic adsorption properties using the unique potentials of the frequency-response (FR) technique. The carbon honeycomb cubes exhibited significantly lower macropore diffusional resistance and higher kinetic selectivity in N2 and O2 separation than that of a commercial pelletized adsorbent (Takeda MSC-4A).

Original languageEnglish
Pages (from-to)86-91
Number of pages6
JournalMicroporous and Mesoporous Materials
Volume110
Issue number1
DOIs
Publication statusPublished - Apr 1 2008

Keywords

  • Air separation
  • Carbon honeycombs
  • Carbon molecular sieves
  • Frequency-response
  • Sorption dynamics

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials

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