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Highly permeable and selective tubular zeolite CHA membranes
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Chemical Engineering.ORCID iD: 0000-0003-2656-857x
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Chemical Engineering.
ZeoMem Sweden AB, Luleå, Sweden.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Chemical Engineering.ORCID iD: 0000-0003-1053-4623
2019 (English)In: Journal of Membrane Science, ISSN 0376-7388, E-ISSN 1873-3123, Vol. 588, article id 117224Article in journal (Refereed) Published
Abstract [en]

Highly permeable and selective tubular zeolite CHA membranes with a thickness of about 450 nm and a length of 100 mm and an inner diameter of 7 mm were evaluated by single gas permeation experiments and for separation of an equimolar CO2/CH4 mixture. The membranes displayed high H2 and CO2 single gas permeances of 55 × 10−7 mol m−2 s−1 Pa−1 and 94 × 10−7 mol m−2 s−1 Pa−1, respectively, and a very low SF6 permeance of 3 × 10−9 mol m−2 s−1 Pa−1. The highest observed mixture separation factor was 99 with CO2 permeance of 60 × 10−7 mol m−2 s−1 Pa−1 at a feed pressure of 5 bar and permeate pressure of 0.12 bar. The corresponding CO2flux was 1.46 mol m−2 s−1. The highest observed flux was 1.98 mol m−2 s−1 with a separation factor of 52 at a feed pressure of 10 bar and permeate pressure of 0.12 bar at room temperature. To the best of our knowledge, this is the first report describing highly permeable and selective tubular CHA membranes. The results indicate that the membranes have a great potential for industrial separation of CO2from natural gas and biogas.

Place, publisher, year, edition, pages
Elsevier, 2019. Vol. 588, article id 117224
Keywords [en]
Tubular zeolite CHA membrane, Gas separation, High permeance, Biogas, Natural gas
National Category
Chemical Process Engineering
Research subject
Chemical Technology
Identifiers
URN: urn:nbn:se:ltu:diva-75258DOI: 10.1016/j.memsci.2019.117224ISI: 000481577200017OAI: oai:DiVA.org:ltu-75258DiVA, id: diva2:1335992
Note

Validerad;2019;Nivå 2;2019-07-08 (johcin)

Available from: 2019-07-08 Created: 2019-07-08 Last updated: 2019-09-09Bibliographically approved

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Yu, LiangNobandegani, Mojtaba SinaeiHedlund, Jonas

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