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Ultrathin zeolite X membranes for pervaporation dehydration of ethanol
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.ORCID iD: 0000-0003-2459-7932
Department of Process and Environmental Engineering, University of Oulu.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.ORCID iD: 0000-0002-4755-5754
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2012 (English)In: Journal of Membrane Science, ISSN 0376-7388, E-ISSN 1873-3123, Vol. 399–400, p. 106-111Article in journal (Refereed) Published
Abstract [en]

Discrete Faujasite zeolite nanocrystals with an average size of about 60 nm were attached as a well-defined monolayer on the surface of porous graded alumina supports. Ultrathin zeolite X films with a total thickness of about 1 μm were grown from the seed monolayers by hydrothermal treatment in clear synthesis solutions. One of the membranes showed a total flux of 3.37 ± 0.08 kg m -2 h -1 and a separation factor of 296 ± 4 for dehydration of a 90/10 wt.% ethanol/water mixture by pervaporation at 65 °C. Moreover, the membranes displayed stable performance during pervaporation for 5.5 h operation. A mathematical model indicated that the flux and selectivity of the membranes were limited by pressure drop in the supports. Therefore, in order to obtain higher flux, the permeability of the support must be improved.

Place, publisher, year, edition, pages
2012. Vol. 399–400, p. 106-111
National Category
Chemical Process Engineering
Research subject
Chemical Technology
Identifiers
URN: urn:nbn:se:ltu:diva-10378DOI: 10.1016/j.memsci.2012.01.036ISI: 000301187700012Scopus ID: 2-s2.0-84857915708Local ID: 92f144bc-bbaa-4e86-a8c6-a888479853c4OAI: oai:DiVA.org:ltu-10378DiVA, id: diva2:983320
Note
Validerad; 2012; 20120305 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Zhou, HanKorelskiy, DanilGrahn, MattiasHedlund, Jonas

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