Intracrystalline self-diffusion of H2O and CH4 in ZSM-5 zeolites

Autor:	Jörg Kärger, Lothar Riekert, Jürgen Caro, Stanko Hǒcevar
Rok vydání:	1986
Předmět:	chemistry.chemical_classification Self-diffusion Chemistry Inorganic chemistry Analytical chemistry Molecular sieve Methane Crystal chemistry.chemical_compound Hydrocarbon ZSM-5 Pulsed field gradient Zeolite General Environmental Science
Zdroj:	Zeolites. 6:213-216
ISSN:	0144-2449
DOI:	10.1016/0144-2449(86)90051-5
Popis:	Intracrystalline self-diffusion coefficients of methane and water in pentasil zeolites have been determined by the n.m.r. pulsed field gradient technique; zeolite samples synthesized in different laboratories were investigated. The self-diffusivity at room temperature was found to be in the order of magnitude of 5 · 10−10 m2s−1 for water, 7 · 10−9 m2s−1 for methane, independent of origin and crystal size of the zeolite. The validity of the experimental method is verified through the consistency of results obtained with crystals of different size as well as before and after external coating with silica.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e6f3aea0d32f7d73cf34200ad955797a https://doi.org/10.1016/0144-2449(86)90051-5 Zobrazit plný text záznamu