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Effect of temperature and large guest molecules on the C–H symmetric stretching vibrational frequencies of methane in structure H and I clathrate hydrates
https://kitami-it.repo.nii.ac.jp/records/2000408
https://kitami-it.repo.nii.ac.jp/records/2000408759029a7-4386-4264-978a-1cccfa6cacf2
| 名前 / ファイル | ライセンス | アクション |
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d0ra02748k.pdf (708 KB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||||||||
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| 公開日 | 2023-04-17 | |||||||||||
| タイトル | ||||||||||||
| タイトル | Effect of temperature and large guest molecules on the C–H symmetric stretching vibrational frequencies of methane in structure H and I clathrate hydrates | |||||||||||
| 言語 | en | |||||||||||
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| 言語 | eng | |||||||||||
| 資源タイプ | ||||||||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||||||||
| タイプ | journal article | |||||||||||
| アクセス権 | ||||||||||||
| アクセス権 | open access | |||||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||||
| 著者 |
Go Fuseya
× Go Fuseya
× Satoshi Takeya
× Akihiro Hachikubo
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| 抄録 | ||||||||||||
| 内容記述タイプ | Abstract | |||||||||||
| 内容記述 | Large molecules such as 2-methylbutane (C5H12) or 2,2-dimethylbutane (C6H14) form structure H (sH) hydrates with methane (CH4) as a help gas. In this study, the Raman spectra of the C–H symmetric stretch region of CH4 enclathrated within various sH hydrates and structure I CH4 hydrates were analyzed in the temperature range 137.7–205.4 K. Thermal expansions of these sH hydrate samples were also measured using powder X-ray diffraction. Symmetric stretch vibrational frequencies of CH4 in host– water cages increased because of varying temperature, and the sizes of the host–water cages also increased; variation of CH4 in small cages was less than in larger cages. Comparing the variations of the C–H symmetric stretching frequencies of CH4 in gas hydrates with varying pressure and temperature, we suggest that the observed trend is caused by thermal vibrations of the CH4 molecule in water cages. |
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| 言語 | en | |||||||||||
| 書誌情報 |
en : RSC Advances 巻 10, p. 17473-17478 |
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| DOI | ||||||||||||
| 識別子タイプ | DOI | |||||||||||
| 関連識別子 | 10.1039/d0ra02748k | |||||||||||
| 出版者 | ||||||||||||
| 出版者 | Royal Society of Chemistry | |||||||||||
| 言語 | en | |||||||||||
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| 言語 | en | |||||||||||
| 値 | publisher | |||||||||||
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| 出版タイプ | VoR | |||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||
