High pressure N2/CH4 adsorption measurements in clinoptilolites

Kouvelos, E; Kesore, K; Steriotis, T; Grigoropoulou, H; Bouloubasi, D; Theophilou, N; Tzintzos, S; Kanelopoulos, N

dc.contributor.author	Kouvelos, E	en
dc.contributor.author	Kesore, K	en
dc.contributor.author	Steriotis, T	en
dc.contributor.author	Grigoropoulou, H	en
dc.contributor.author	Bouloubasi, D	en
dc.contributor.author	Theophilou, N	en
dc.contributor.author	Tzintzos, S	en
dc.contributor.author	Kanelopoulos, N	en
dc.date.accessioned	2014-03-01T01:26:25Z
dc.date.available	2014-03-01T01:26:25Z
dc.date.issued	2007	en
dc.identifier.issn	1387-1811	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18072
dc.subject	Adsorption	en
dc.subject	Clinoptilolite	en
dc.subject	Ion-exchanged clinoptilolite	en
dc.subject	Nitrogen/methane separation	en
dc.subject	Pore blocking	en
dc.subject.classification	Chemistry, Applied	en
dc.subject.classification	Chemistry, Physical	en
dc.subject.classification	Nanoscience & Nanotechnology	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.other	Adsorption isotherms	en
dc.subject.other	Gas adsorption	en
dc.subject.other	Ion exchange	en
dc.subject.other	Methane	en
dc.subject.other	Nitrogen	en
dc.subject.other	Clinoptilolite	en
dc.subject.other	Ion-exchanged clinoptilolite	en
dc.subject.other	Pore blocking	en
dc.subject.other	Zeolites	en
dc.subject.other	Adsorption isotherms	en
dc.subject.other	Gas adsorption	en
dc.subject.other	Ion exchange	en
dc.subject.other	Methane	en
dc.subject.other	Nitrogen	en
dc.subject.other	Zeolites	en
dc.title	High pressure N2/CH4 adsorption measurements in clinoptilolites	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.micromeso.2006.07.036	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.micromeso.2006.07.036	en
heal.language	English	en
heal.publicationDate	2007	en
heal.abstract	The ability of clinoptilolite, a naturally occurring zeolite, to separate a nitrogen/methane gas mixture was studied experimentally. High-pressure nitrogen and methane adsorption isotherms at 273 and 298 K were measured for the raw material as well as for monovalent (Li+ and Na+) cation exchanged derivatives. The raw material showed promising results as a potential sorbent for kinetic pressure swing adsorption (PSA) processes. The type and population distribution of the charge-balancing cations affect significantly the adsorption and kinetic characteristic of the clinoptilolite samples. Both N-2 and CH4 diffusion is activated, and thus sorption kinetics are a strong function of temperature. Based on our experimental data CH4 is more hindered and its mobility is significantly decreased at low temperatures. In this respect a kinetic PSA with fast cycles at low temperatures seems favourable. (c) 2006 Elsevier Inc. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Microporous and Mesoporous Materials	en
dc.identifier.doi	10.1016/j.micromeso.2006.07.036	en
dc.identifier.isi	ISI:000243845200015	en
dc.identifier.volume	99	en
dc.identifier.issue	1-2	en
dc.identifier.spage	106	en
dc.identifier.epage	111	en