Zeolite LTA/Carbon membranes for air separation

Please use this identifier to cite or link to this item: http://hdl.handle.net/10045/14588
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Title: Zeolite LTA/Carbon membranes for air separation
Authors: Domínguez Domínguez, Sonia | Berenguer-Murcia, Ángel | Morallon, Emilia | Linares-Solano, Angel | Cazorla-Amorós, Diego
Research Group/s: Electrocatálisis y Electroquímica de Polímeros | Materiales Carbonosos y Medio Ambiente
Center, Department or Service: Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales
Keywords: LTA zeolite | Carbon materials | Electrophoretic deposition | Secondary growth | Air separation
Knowledge Area: Química Física | Química Inorgánica
Issue Date: 19-Feb-2008
Publisher: Elsevier
Citation: DOMÍNGUEZ DOMÍNGUEZ, Sonia, et al. “Zeolite LTA/Carbon membranes for air separation”. Microporous and Mesoporous Materials. Vol. 115, No. 1-2 (1 Oct. 2008). ISSN 1387-1811, pp. 51-60
Abstract: Zeolite LTA membranes with few defects have been successfully synthesized on a carbon support by the secondary growth method, in which hydrothermal synthesis is preceded by the seeding of the carbon support with colloidal LTA zeolite crystals (about 100 nm) by means of the ElectroPhoretic Deposition (EPD) method. The effect of different synthesis parameters, such as pre-treatments of the carbon support, and different synthesis times and temperatures, on the quality of the zeolite LTA/carbon composite, were analysed by means of XRD, SEM, EDS, and TG–DTA–MS. In addition, in order to analyse the permeation characteristics of the composite materials, they were mounted in a permeation cell, and single gas components or binary mixtures of N2/O2 (in a ratio of 79:21) were fed to the zeolite side. The best zeolite LTA/carbon membrane was obtained using a pre-oxidised and EPD seeded support which then underwent hydrothermal treatment at 373 K for 4.5 h. This final composite, upon reaching the steady state, separates air with a high permeance (about 2.7 x 10-7 mol s-1 Pa-1 m-2) and possesses a good separation factor (about 2.7).
Sponsor: Spanish Ministerio de Educación y Ciencia (Project CTQ2006-08958/PPQ) and the EU (FEDER program).
URI: http://hdl.handle.net/10045/14588
ISSN: 1387-1811 (Print) | 1873-3093 (Online)
DOI: 10.1016/j.micromeso.2007.11.049
Language: eng
Type: info:eu-repo/semantics/article
Peer Review: si
Publisher version: http://dx.doi.org/10.1016/j.micromeso.2007.11.049
Appears in Collections:INV - GEPE - Artículos de Revistas
INV - MCMA - Artículos de Revistas

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