2015年3月
Hydrogen and carbon dioxide adsorption with tetra‐n‐butyl ammonium semi‐clathrate hydrates for gas separations
AICHE JOURNAL
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- 巻
- 61
- 号
- 3
- 開始ページ
- 992
- 終了ページ
- 1003
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1002/aic.14689
Gas adsorption rates of H<sub>2</sub>, CO<sub>2</sub>, and H<sub>2</sub>-CO<sub>2</sub> gas mixture (H<sub>2</sub>/CO<sub>2</sub>=3.4) with tetra-n-butyl ammonium salt (bromide, chloride, and fluoride) semi-clathrate hydrate particles were measured at 269 K to assess their properties for gas separation. Equilibrium gas occupancies in the S-cages of the particles were in order of (high to low) for hexagonal structure-I, tetragonal structure-I, and superlattice of cubic structure-I structures with the maximum fractional occupancy by CO<sub>2</sub> being about 40%. The CO<sub>2</sub> diffusion rate depended on the anion size of the salt, which is attributed to distortion of the S-cage that is close to the molecular size of CO<sub>2</sub>. Simulations of semi-clathrate hydrate particles with theory showed that H<sub>2</sub>/CO<sub>2</sub> selectivities could be as high as 36 (3.0 mol% TBAF) and that selectivities for an ideal membrane (3.3 mol% TBAF) could be >100 (269 K, 0.3-4.5 MPa). Semi-clathrate hydrates have wide application as separation media for gas mixtures.
- リンク情報
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- DOI
- https://doi.org/10.1002/aic.14689
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000349915000022&DestApp=WOS_CPL
- URL
- http://www.scopus.com/inward/record.url?eid=2-s2.0-84922649749&partnerID=MN8TOARS
- URL
- http://orcid.org/0000-0002-8836-1294
- ID情報
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- DOI : 10.1002/aic.14689
- ISSN : 0001-1541
- eISSN : 1547-5905
- ORCIDのPut Code : 64618003
- SCOPUS ID : 84922649749
- Web of Science ID : WOS:000349915000022