FREQUENCY-RESPONSE METHOD IN THE STUDY OF METHANE DIFFUSION IN 3 CATION-EXCHANGED ZEOLITES-A

Authors
CARTIGNY J GIERMANSKAKAHN J DELARA EC
Citation
J. Cartigny et al., FREQUENCY-RESPONSE METHOD IN THE STUDY OF METHANE DIFFUSION IN 3 CATION-EXCHANGED ZEOLITES-A, Zeolites, 14(7), 1994, pp. 576-581
Citations number
32
Categorie Soggetti
Chemistry Physical
Journal title
Zeolites → ACNP
ISSN journal
01442449
Volume
14
Issue
7
Year of publication
1994
Pages
576 - 581
Database
ISI
SICI code
0144-2449(1994)14:7<576:FMITSO>2.0.ZU;2-4
Abstract
The frequency-response method has been applied to compare the methane diffusion processes in similar-size crystals of A-type zeolites contai ning different exchangeable cations (K, Na, Ca). This has been done in order to discriminate between inter- and intracrystalline diffusion. The signal observed in NaA and NaCaA zeolites attributed to the intrac rystalline diffusion is modified by surface barriers in the Linde crys tals. The apparatus for diffusion measurements by the frequency-respon se method is described.