Gas Permeation Properties of High-Silica CHA-Type Zeolite Membrane
The polycrystalline CHA-type zeolite layer with Si/Al = 18 was formed on the porous α-Al<sub>2</sub>O<sub>3</sub> tube in this study, and the gas permeation properties were determined using single-component H<sub>2</sub>, CO<sub>2</sub>, N<sub>2&...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-03-01
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| Series: | Membranes |
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| Online Access: | https://www.mdpi.com/2077-0375/11/4/249 |
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| author | Yasuhisa Hasegawa Chie Abe Mayumi Natsui Ayumi Ikeda |
| author_facet | Yasuhisa Hasegawa Chie Abe Mayumi Natsui Ayumi Ikeda |
| author_sort | Yasuhisa Hasegawa |
| collection | DOAJ |
| description | The polycrystalline CHA-type zeolite layer with Si/Al = 18 was formed on the porous α-Al<sub>2</sub>O<sub>3</sub> tube in this study, and the gas permeation properties were determined using single-component H<sub>2</sub>, CO<sub>2</sub>, N<sub>2</sub>, CH<sub>4</sub>, <i>n</i>-C<sub>4</sub>H<sub>10</sub>, and SF<sub>6</sub> at 303–473 K. The membrane showed permeation behavior, wherein the permeance reduced with the molecular size, attributed to the effect of molecular sieving. The separation performances were also determined using the equimolar mixtures of N<sub>2</sub>–SF<sub>6</sub>, CO<sub>2</sub>–N<sub>2</sub>, and CO<sub>2</sub>–CH<sub>4</sub>. As a result, the N<sub>2</sub>/SF<sub>6</sub> and CO<sub>2</sub>/CH<sub>4</sub> selectivities were as high as 710 and 240, respectively. However, the CO<sub>2</sub>/N<sub>2</sub> selectivity was only 25. These results propose that the high-silica CHA-type zeolite membrane is suitable for the separation of CO<sub>2</sub> from CH<sub>4</sub> by the effect of molecular sieving. |
| first_indexed | 2024-03-10T12:46:21Z |
| format | Article |
| id | doaj.art-422866aef2d8419dbf1da885d77043d0 |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-10T12:46:21Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-422866aef2d8419dbf1da885d77043d02023-11-21T13:26:18ZengMDPI AGMembranes2077-03752021-03-0111424910.3390/membranes11040249Gas Permeation Properties of High-Silica CHA-Type Zeolite MembraneYasuhisa Hasegawa0Chie Abe1Mayumi Natsui2Ayumi Ikeda3Research Institute of Chemical Process Technology, National Institute of Advanced Industrial Science and Technology, 4-2-1 Nigatake, Sendai 983-8551, JapanResearch Institute of Chemical Process Technology, National Institute of Advanced Industrial Science and Technology, 4-2-1 Nigatake, Sendai 983-8551, JapanResearch Institute of Chemical Process Technology, National Institute of Advanced Industrial Science and Technology, 4-2-1 Nigatake, Sendai 983-8551, JapanResearch Institute of Chemical Process Technology, National Institute of Advanced Industrial Science and Technology, 4-2-1 Nigatake, Sendai 983-8551, JapanThe polycrystalline CHA-type zeolite layer with Si/Al = 18 was formed on the porous α-Al<sub>2</sub>O<sub>3</sub> tube in this study, and the gas permeation properties were determined using single-component H<sub>2</sub>, CO<sub>2</sub>, N<sub>2</sub>, CH<sub>4</sub>, <i>n</i>-C<sub>4</sub>H<sub>10</sub>, and SF<sub>6</sub> at 303–473 K. The membrane showed permeation behavior, wherein the permeance reduced with the molecular size, attributed to the effect of molecular sieving. The separation performances were also determined using the equimolar mixtures of N<sub>2</sub>–SF<sub>6</sub>, CO<sub>2</sub>–N<sub>2</sub>, and CO<sub>2</sub>–CH<sub>4</sub>. As a result, the N<sub>2</sub>/SF<sub>6</sub> and CO<sub>2</sub>/CH<sub>4</sub> selectivities were as high as 710 and 240, respectively. However, the CO<sub>2</sub>/N<sub>2</sub> selectivity was only 25. These results propose that the high-silica CHA-type zeolite membrane is suitable for the separation of CO<sub>2</sub> from CH<sub>4</sub> by the effect of molecular sieving.https://www.mdpi.com/2077-0375/11/4/249zeolite membraneCHA-type zeolitegas permeationCO<sub>2</sub> separation |
| spellingShingle | Yasuhisa Hasegawa Chie Abe Mayumi Natsui Ayumi Ikeda Gas Permeation Properties of High-Silica CHA-Type Zeolite Membrane Membranes zeolite membrane CHA-type zeolite gas permeation CO<sub>2</sub> separation |
| title | Gas Permeation Properties of High-Silica CHA-Type Zeolite Membrane |
| title_full | Gas Permeation Properties of High-Silica CHA-Type Zeolite Membrane |
| title_fullStr | Gas Permeation Properties of High-Silica CHA-Type Zeolite Membrane |
| title_full_unstemmed | Gas Permeation Properties of High-Silica CHA-Type Zeolite Membrane |
| title_short | Gas Permeation Properties of High-Silica CHA-Type Zeolite Membrane |
| title_sort | gas permeation properties of high silica cha type zeolite membrane |
| topic | zeolite membrane CHA-type zeolite gas permeation CO<sub>2</sub> separation |
| url | https://www.mdpi.com/2077-0375/11/4/249 |
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