The sorption dynamics of N2 and O2 in zeolite particles

Gy Onyestyák, J. Valyon, L. V.C. Rees

Research output: Contribution to journalArticle

5 Citations (Scopus)


Commercial zeolite 5A and 13X adsorbents were characterized by their dynamic N2 and O2 adsorption properties. Frequency-response (FR) sorption rate spectra were determined between -78 to -20°C and 100-600 Pa equilibrium pressures. In zeolite particles, smaller than about 63 μm the interaction of the gas molecules and the sorption sites determined the rate of the adsorption-desorption process. In particles, larger than 0.2-mm size, the rate of diffusion in the meso- and macro-pores governed the rate of sorption. Zeolite pellets, obtained from various commercial sources, showed comparable inter-crystalline diffusivities. In general, the FR spectra reflected the variance in the chemical and structural properties of the zeolite crystallites and their agglomerates.

Original languageEnglish
Pages (from-to)1019-1026
Number of pages8
JournalStudies in Surface Science and Catalysis
Volume158 B
Publication statusPublished - Jan 1 2005

ASJC Scopus subject areas

  • Catalysis
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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