Frequency-response study of micro- and macro-pore diffusion in manufactured zeolite pellets

György Onyestyák, Dongmin Shen, Lovat V.C. Rees

Research output: Contribution to journalArticle

26 Citations (Scopus)


Intra- and inter-crystalline diffusion of carbon dioxide and isobutane in different manufactured 5A and 13X pellets have been investigated by the frequency-response method. Despite three orders of magnitude difference in micropore diffusivities for carbon dioxide in 5A and 13X zeolite crystals, its macropore diffusivities in 5A and 13X pellets are nearly the same. The macropore diffusivities were found to be the controlling step in all pellets under study. The diffusivity of carbon dioxide was found to be about twice that of isobutane in the macropores of 13X pellets.

Original languageEnglish
Pages (from-to)1399-1405
Number of pages7
JournalJournal of the Chemical Society, Faraday Transactions
Issue number9
Publication statusPublished - Dec 1 1995

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

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