{"created":"2024-12-12T10:09:13.151055+00:00","id":2011306,"links":{},"metadata":{"_buckets":{"deposit":"208bfc86-dc0e-49d8-b015-b057830d023e"},"_deposit":{"created_by":7,"id":"2011306","owners":[7],"pid":{"revision_id":0,"type":"depid","value":"2011306"},"status":"published"},"_oai":{"id":"oai:tokushima-u.repo.nii.ac.jp:02011306","sets":["1713853213384:1713853295607"]},"author_link":["861","764"],"item_10001_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2023-08-07","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"33","bibliographicPageEnd":"22170","bibliographicPageStart":"22161","bibliographicVolumeNumber":"25","bibliographic_titles":[{"bibliographic_title":"Physical Chemistry Chemical Physics","bibliographic_titleLang":"en"}]}]},"item_10001_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"The pressure-induced amorphization (PIA) of ice and clathrate hydrates occurs at temperatures significantly below their melting and decomposition points. The PIA of type I clathrate hydrates containing methane and ethane as guest molecules was investigated using Raman and infrared (IR) spectroscopy. With isothermal compression at 100 K, methane hydrate (MH) underwent PIA at 2–3.5 GPa, whereas ethane hydrate (EH) underwent PIA at 4.0–5.5 GPa. The type I clathrate structure consists of small (512) and large (51262) cages. The Raman results revealed that the collapsed small and large cages in the amorphous forms of MH and EH were not distinguishable. The collapsed cages, including the methane and ethane molecules, were similar to the small and large cages, respectively. Their water networks were folded or expanded during the PIA process so that the cavity sizes of the collapsed cages were compatible with those of the guest molecules. Peaks in the IR spectra of crystalline MH assignable to the ro-vibrational transition of methane in large cages were observed in the C–H stretching wavenumber region below 40 K. The ro-vibrational IR band disappeared after amorphization, suggesting that the rotational motion of the methane molecule in the large cage was frozen by the collapse, as reported in previous dielectric spectroscopic and simulation studies. This study contributes to a better understanding of the changes in the local structure around guest molecules during PIA and the dynamics of the guest molecules.","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_10001_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"The Royal Society of Chemistry","subitem_publisher_language":"en"}]},"item_10001_source_id_9":{"attribute_name":"収録物ID","attribute_value_mlt":[{"subitem_source_identifier":"14639076","subitem_source_identifier_type":"ISSN"},{"subitem_source_identifier":"14639084","subitem_source_identifier_type":"ISSN"},{"subitem_source_identifier":"AA11301773","subitem_source_identifier_type":"NCID"},{"subitem_source_identifier":"AA11723355","subitem_source_identifier_type":"NCID"}]},"item_10001_version_type_20":{"attribute_name":"出版タイプ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_ab4af688f83e57aa","subitem_version_type":"AM"}]},"item_1715043197608":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open access"}]},"item_1722929371688":{"attribute_name":"出版社版DOI","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_language":"ja","subitem_relation_name_text":"10.1039/D3CP03096B"}],"subitem_relation_type_id":{"subitem_relation_type_id_text":"https://doi.org/10.1039/D3CP03096B","subitem_relation_type_select":"DOI"}}]},"item_1723180141928":{"attribute_name":"EID","attribute_value_mlt":[{"subitem_identifier_type":"URI","subitem_identifier_uri":"400204"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifier":"","affiliationNameIdentifierScheme":"ISNI","affiliationNameIdentifierURI":"http://www.isni.org/isni/"}],"affiliationNames":[{"affiliationName":"","affiliationNameLang":"ja"}]}],"creatorNames":[{"creatorName":"野口, 直樹","creatorNameLang":"ja"},{"creatorName":"ノグチ, ナオキ","creatorNameLang":"ja-Kana"},{"creatorName":"Noguchi, Naoki","creatorNameLang":"en"}],"familyNames":[{"familyName":"野口","familyNameLang":"ja"},{"familyName":"ノグチ","familyNameLang":"ja-Kana"},{"familyName":"Noguchi","familyNameLang":"en"}],"givenNames":[{"givenName":"直樹","givenNameLang":"ja"},{"givenName":"ナオキ","givenNameLang":"ja-Kana"},{"givenName":"Naoki","givenNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"861","nameIdentifierScheme":"WEKO"},{"nameIdentifier":"323733/profile-ja.html","nameIdentifierScheme":"徳島大学 教育研究者総覧","nameIdentifierURI":"http://pub2.db.tokushima-u.ac.jp/ERD/person/323733/profile-ja.html"},{"nameIdentifier":"50621760","nameIdentifierScheme":"e-Rad","nameIdentifierURI":"https://nrid.nii.ac.jp/ja/search/?qm=50621760"}]},{"creatorNames":[{"creatorName":"シライシ, ユイ","creatorNameLang":"ja"},{"creatorName":"シライシ, ユイ","creatorNameLang":"ja-Kana"},{"creatorName":"Shiraishi, Yui","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"カゲヤマ, マホ","creatorNameLang":"ja"},{"creatorName":"カゲヤマ, マホ","creatorNameLang":"ja-Kana"},{"creatorName":"Kageyama, Maho","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"ヨコイ, ユウ","creatorNameLang":"ja"},{"creatorName":"ヨコイ, ユウ","creatorNameLang":"ja-Kana"},{"creatorName":"Yokoi, Yuu","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"クロハマ, サキ","creatorNameLang":"ja"},{"creatorName":"クロハマ, サキ","creatorNameLang":"ja-Kana"},{"creatorName":"Kurohama, Saki","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"オカダ, ナツキ","creatorNameLang":"ja"},{"creatorName":"オカダ, ナツキ","creatorNameLang":"ja-Kana"},{"creatorName":"Okada, Natsuki","creatorNameLang":"en"}]},{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifier":"","affiliationNameIdentifierScheme":"ISNI","affiliationNameIdentifierURI":"http://www.isni.org/isni/"}],"affiliationNames":[{"affiliationName":"","affiliationNameLang":"ja"}]}],"creatorNames":[{"creatorName":"岡村, 英一","creatorNameLang":"ja"},{"creatorName":"オカムラ, ヒデカズ","creatorNameLang":"ja-Kana"},{"creatorName":"Okamura, Hidekazu","creatorNameLang":"en"}],"familyNames":[{"familyName":"岡村","familyNameLang":"ja"},{"familyName":"オカムラ","familyNameLang":"ja-Kana"},{"familyName":"Okamura","familyNameLang":"en"}],"givenNames":[{"givenName":"英一","givenNameLang":"ja"},{"givenName":"ヒデカズ","givenNameLang":"ja-Kana"},{"givenName":"Hidekazu","givenNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"764","nameIdentifierScheme":"WEKO"},{"nameIdentifier":"292954/profile-ja.html","nameIdentifierScheme":"徳島大学 教育研究者総覧","nameIdentifierURI":"http://pub2.db.tokushima-u.ac.jp/ERD/person/292954/profile-ja.html"},{"nameIdentifier":"00273756","nameIdentifierScheme":"e-Rad","nameIdentifierURI":"https://nrid.nii.ac.jp/ja/search/?qm=00273756"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_access","date":[{"dateType":"Available","dateValue":"2024-08-07"}],"displaytype":"detail","filename":"pccp_25_33_22161.pdf","filesize":[{"value":"2.17 MB"}],"format":"application/pdf","mimetype":"application/pdf","url":{"objectType":"fulltext","url":"https://tokushima-u.repo.nii.ac.jp/record/2011306/files/pccp_25_33_22161.pdf"},"version_id":"6bdbcd96-2991-4ccd-8955-aa43c4cce470"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Direct observation of pressure-induced amorphization of methane/ethane hydrates using Raman and infrared spectroscopy","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Direct observation of pressure-induced amorphization of methane/ethane hydrates using Raman and infrared spectroscopy","subitem_title_language":"en"}]},"item_type_id":"40001","owner":"7","path":["1713853295607"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2023-10-11"},"publish_date":"2023-10-11","publish_status":"0","recid":"2011306","relation_version_is_last":true,"title":["Direct observation of pressure-induced amorphization of methane/ethane hydrates using Raman and infrared spectroscopy"],"weko_creator_id":"7","weko_shared_id":-1},"updated":"2025-02-10T07:32:44.341202+00:00"}