Innovative methods for preparation and testing of Al2O3 supported silicalite-1 membranes

Romanos, GE; Steriotis, ThA; Kikkinides, ES; Kanellopoulos, NK; Kasselouri, V; Ramsay, JDF; Langlois, P; Kallus, S

dc.contributor.author	Romanos, GE	en
dc.contributor.author	Steriotis, ThA	en
dc.contributor.author	Kikkinides, ES	en
dc.contributor.author	Kanellopoulos, NK	en
dc.contributor.author	Kasselouri, V	en
dc.contributor.author	Ramsay, JDF	en
dc.contributor.author	Langlois, P	en
dc.contributor.author	Kallus, S	en
dc.date.accessioned	2014-03-01T01:16:39Z
dc.date.available	2014-03-01T01:16:39Z
dc.date.issued	2001	en
dc.identifier.issn	09552219	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14145
dc.subject	Chemical Composition	en
dc.subject	Elevated Temperature	en
dc.subject	Gas Separation	en
dc.subject	Hydrothermal Synthesis	en
dc.subject	Hydrothermal Treatment	en
dc.subject	Scanning Electron Microscopy	en
dc.subject	Thermal Stability	en
dc.subject	X Ray Diffraction	en
dc.subject.other	Alumina	en
dc.subject.other	Ceramic products	en
dc.subject.other	Crystal growth	en
dc.subject.other	Heat shielding	en
dc.subject.other	Heat treatment	en
dc.subject.other	Mechanical permeability	en
dc.subject.other	Permselective membranes	en
dc.subject.other	Pore size	en
dc.subject.other	Porosimeters	en
dc.subject.other	Scanning electron microscopy	en
dc.subject.other	Synthesis (chemical)	en
dc.subject.other	Zeolites	en
dc.subject.other	Hydrothermal synthesis	en
dc.subject.other	Hydrothermal treatment	en
dc.subject.other	Inorganic membranes	en
dc.subject.other	Gas permeable membranes	en
dc.title	Innovative methods for preparation and testing of Al2O3 supported silicalite-1 membranes	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0955-2219(00)00176-X	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0955-2219(00)00176-X	en
heal.publicationDate	2001	en
heal.abstract	The aim of the present study is to develop a novel type of zeolite membrane and exploit some of the inherent and unique advantages of this membrane in gas separations. The development of inorganic membranes formed from a coherently grown layer of zeolite crystals is a particularly promising approach, since such membranes offer substantially higher permeabilities and selectivities compared with polymeric materials and can perform under extreme conditions, e.g. at elevated temperatures and in aggressive chemical environment. Such zeolite membranes are prepared by in-situ hydrothermal synthesis of zeolite layer within the macropores of alumina ceramic supports (tubes/discs). In this way more stable zeolite membranes are produced, avoiding outer separating layers which are prone to mechanical damage. These membranes have also been shown to have good thermal stability up to 500 °C, with no evidence of crack formation. The synthesized materials have been characterized by several techniques such as Hg and N2 porosimetry, scanning electron microscopy (SEM), and X-ray diffraction (XRD). From these measurements it appears that the structure of the zeolite membrane is influenced by several factors, such as structure and size of the pores of the support, chemical composition of the precursor solution from which the crystals will be harvested, reaction conditions, etc. Finally, gas permeabilities and/or selectivities have been measured for several important gas systems. The results of this study indicate the important role of influencing the outcome of the crystal formation by controlling the conditions of the hydrothermal treatment in obtaining optimum gas permeabilities and/or selectivities of these systems.	en
heal.publisher	Elsevier Science Ltd, Exeter, United Kingdom	en
heal.journalName	Journal of the European Ceramic Society	en
dc.identifier.doi	10.1016/S0955-2219(00)00176-X	en
dc.identifier.volume	21	en
dc.identifier.issue	2	en
dc.identifier.spage	119	en
dc.identifier.epage	126	en