2022年3月
Superheating of Structure I Gas Hydrates within the Structure II Cyclopentane Hydrate Shell
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
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- 巻
- 13
- 号
- 9
- 開始ページ
- 2130
- 終了ページ
- 2136
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1021/acs.jpclett.2c00264
- 出版者・発行元
- AMER CHEMICAL SOC
The superheated state of methane (CH4) hydrate that exists under the surface ice layer can persist for considerable lengths of time, which showed promise as a method for storing and transporting natural gas. This study extends this further by coating sI CH4 hydrate with one of several sII hydrates, thus eliminating the need for a defect-free continuous interface between the sI and sII hydrates. Gas hydrate crystals were kept intact above their dissociation temperature by immersing them in liquid cyclopentane (CP), as observed with powder X-ray diffraction and X-ray CT methods. It was observed that placing the CH4 hydrate in CP converted the outer layer of CH4 hydrate to a thin layer of CP hydrate at around 270 K under atmospheric pressure, which is similar to 80 K higher than the usual dissociation temperature. It was also observed that sI CO2 hydrate and C2H6 hydrate could be preserved by CP hydrate.
- リンク情報
- ID情報
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- DOI : 10.1021/acs.jpclett.2c00264
- ISSN : 1948-7185
- Web of Science ID : WOS:000772195200011