Separation of N2 from O2 and Other Gases Using FAU-Type Zeolite Membranes.
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- GUAN GUOQING
- Department of Applied Chemistry, Kyushu University
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- KUSAKABE KATSUKI
- Department of Applied Chemistry, Kyushu University
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- MOROOKA SHIGEHARU
- Department of Applied Chemistry, Kyushu University
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Abstract
The development of nitrogen-selective membranes is essential to realize a membrane process for the production of oxygen-enriched air. Zeolite membranes have potential for this purpose, while polymeric and carbon membranes are largely oxygen-selective. In this study, FAU-type zeolite membranes containing Na cations were prepared by hydrothermal synthesis on a porous α-alumina support tube. Permeation measurements for unary and binary systems for N2 and O2 were performed at 310 K. The membranes showed high permeation rates and high N2/O2 ideal separation factors for unary N2 and O2 gases. However, the separation factor was decreased when an N2-O2 mixture was fed. In order to further examine the permeation mechanism of the membranes, permeation rates were also determined for single-components of H2, CO2, CH4, n-C4H10, i-C4H10 and SF6, as well as for N2-H2, N2-CO2, and N2-n-C4H10 mixtures. The permeation properties can be classified based on competitive adsorptivity and diffusivity in the zeolitic pores. Ion-exchange and impregnation with Li cations were not greatly effective in increasing the N2/O2 separation factor of the membrane.
Journal
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- JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
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JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 34 (8), 990-997, 2001
The Society of Chemical Engineers, Japan
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Details 詳細情報について
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- CRID
- 1390001204566286976
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- NII Article ID
- 130000020092
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- NII Book ID
- AA00709658
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- COI
- 1:CAS:528:DC%2BD3MXmtlCmtLo%3D
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- ISSN
- 18811299
- 00219592
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- NDL BIB ID
- 5889064
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed