The sorption dynamics of N2 and O2 in zeolite particles

G. Onyestyák, J. Valyon, L. V C Rees

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

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 - 2005

Fingerprint

Zeolites
sorption
Sorption
Frequency response
frequency response
Adsorption
porosity
Crystallites
Adsorbents
Chemical properties
adsorption
Macros
Structural properties
Desorption
adsorbents
pellets
chemical properties
crystallites
Crystalline materials
diffusivity

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Catalysis

Cite this

The sorption dynamics of N2 and O2 in zeolite particles. / Onyestyák, G.; Valyon, J.; Rees, L. V C.

In: Studies in Surface Science and Catalysis, Vol. 158 B, 2005, p. 1019-1026.

Research output: Contribution to journalArticle

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