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A simple method for...
A simple method for blocking defects in zeolite membranes
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- Karimi, Somayeh (author)
- Luleå tekniska universitet,Kemiteknik,Catalysis and Nanostructured Materials Research Laboratory, College of Engineering, School of Chemical Engineering, University of Tehran
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- Korelskiy, Danil (author)
- Luleå tekniska universitet,Kemiteknik
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- Yu, Liang (author)
- Luleå tekniska universitet,Kemiteknik
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- Mouzon, Johanne (author)
- Luleå tekniska universitet,Kemiteknik
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- Khodadadi, Abbas Ali (author)
- Catalysis and Nanostructured Materials Research Laboratory, College of Engineering, School of Chemical Engineering, University of Tehran
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- Mortazavi, Yadollah (author)
- Catalysis and Nanostructured Materials Research Laboratory, College of Engineering, School of Chemical Engineering, University of Tehran
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- Esmaeili, Mohammad (author)
- Catalysis and Nanostructured Materials Research Laboratory, College of Engineering, School of Chemical Engineering, University of Tehran
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- Hedlund, Jonas (author)
- Luleå tekniska universitet,Kemiteknik
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(creator_code:org_t)
- Elsevier BV, 2015
- 2015
- English.
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In: Journal of Membrane Science. - : Elsevier BV. - 0376-7388 .- 1873-3123. ; 489, s. 270-274
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- The abatement of defects in zeolite membranes is essential for achieving high selectivity. In the present work, a simple and effective method for blocking defects in ultra-thin (ca. 0.5 μm) MFI zeolite membranes has been developed. The method is based on deposition of an ultra-thin (∼15 nm) layer of amorphous silica on the top surface of the membrane. Permporometry data indicated that the amount of defects, especially defects larger than 4 nm, in the membranes was significantly reduced after the modification. In mixture separation experiments, the CO2/H2 separation factor increased dramatically after blocking the defects in a defective membrane that was selected for the experiments. For instance, at 263 K and 9 bar feed pressure, the CO2/H2 separation factor increased from 8.5 to 36 after modification of the membrane, whereas the CO2 flux only decreased by ca. 40%.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Kemiska processer (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Chemical Process Engineering (hsv//eng)
Keyword
- Chemical Technology
- Kemisk teknologi
Publication and Content Type
- ref (subject category)
- art (subject category)
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