Structure-H Methane + 1,1,2,2,3,3,4-Heptafluorocyclopentane Mixed Hydrate at Pressures up to 373 Mpa

Suzuki, Sumihiro; Matsumoto, Yuuki; Katsuta, Yoshito; Hashimoto, Shunsuke; Sugahara, Takeshi; Ohgaki, Kazunari

doi:https://doi.org/10.1021/jp402777a

Structure-H Methane + 1,1,2,2,3,3,4-Heptafluorocyclopentane Mixed Hydrate at Pressures up to 373 Mpa

Suzuki, Sumihiro; Matsumoto, Yuuki; Katsuta, Yoshito et al.

Journal of Physical Chemistry A, 2013, 117(20), 4338-4341

Number of Access:1（2025-07-27 08:38 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/102341

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Title	Structure-H Methane + 1,1,2,2,3,3,4-Heptafluorocyclopentane Mixed Hydrate at Pressures up to 373 Mpa
Creator	CreatorName Suzuki, Sumihiro
	CreatorName Matsumoto, Yuuki
	CreatorName Katsuta, Yoshito
	CreatorName Hashimoto, Shunsuke
	NRID 1000020335384 1000020335384 ORCID 0000-0002-5236-5605 0000-0002-5236-5605 researchmap permalink read0191169 read0191169 Scopus Author ID 56212469300 56212469300 CreatorName Sugahara, Takeshi
	NRID 1000080107078 1000080107078 CreatorName Ohgaki, Kazunari
Subject	Gas hydrate
	Phase equilibria
	X-ray diffraction
	Raman spectroscopy
Description	This document is the Accepted Manuscript version of a Published Work that appeared in final form in The Journal of Physical Chemistry A, © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/jp402777a.
Abstract	Thermodynamic stability boundary of structure-H hydrates with large guest species and methane (CH₄) at extremely high pressures has been almost unclear. In the present study, the four-phase equilibrium relations in the structure-H CH₄ + 1,1,2,2,3,3,4-heptafluorocyclopentane (1,1,2,2,3,3,4-HFCP) mixed hydrate system were investigated in a temperature range of (281.05 to 330.12) K and a pressure range up to 373 MPa. The difference between equilibrium pressures in the structure-H CH₄ + 1,1,2,2,3,3,4-HFCP mixed hydrate system and the structure-I simple CH 4 hydrate system gets larger with increase in temperature. The structure-H CH₄ + 1,1,2,2,3,3,4-HFCP mixed hydrate survives even at 330 K and 373 MPa without any structural phase transition. The maximum temperature where the structure-H CH₄ + 1,1,2,2,3,3,4-HFCP mixed hydrate is thermodynamically stable is likely to be beyond that of the structure-H simple CH₄ hydrate.
Publisher	American Chemical Society
Source Title	Journal of Physical Chemistry A
Volume (Issue)	117(20)
Page	4338-4341
Date of Issued	2013-05-23
Language	English
Handle URL	https://hdl.handle.net/11094/102341
PISSN	10895639
eISSN	15205215
Relation.isVersionOf	DOI (Publisher Version) https://doi.org/10.1021/jp402777a
Access Rights	open access
CopyRight	This document is the Accepted Manuscript version of a Published Work that appeared in final form in The Journal of Physical Chemistry A, © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/jp402777a.
oaire:version	Accepted Manuscript
Category	学術雑誌論文 Journal Article

Resource Type	journal article
Local Type	Journal Article
DCMI Type	Text
DCTERMS.bibliographicCitation	Journal of Physical Chemistry A. 2013, 117(20), p. 4338-4341
DC.title	Structure-H Methane + 1,1,2,2,3,3,4-Heptafluorocyclopentane Mixed Hydrate at Pressures up to 373 Mpa
DC.creator	Suzuki, Sumihiro
	Matsumoto, Yuuki
	Katsuta, Yoshito
	Hashimoto, Shunsuke
	Sugahara, Takeshi
	Ohgaki, Kazunari
DC.publisher	American Chemical Society
DC.language' scheme='DCTERMS.RFC1766	English
DC.type' scheme='DCTERMS.DCMIType	Text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2013-05-23
DC.identifier	https://doi.org/10.1021/jp402777a
DC.subject	Gas hydrate
	Phase equilibria
	X-ray diffraction
	Raman spectroscopy
DC.description	This document is the Accepted Manuscript version of a Published Work that appeared in final form in The Journal of Physical Chemistry A, © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/jp402777a.
DCTERMS.abstract	Thermodynamic stability boundary of structure-H hydrates with large guest species and methane (CH₄) at extremely high pressures has been almost unclear. In the present study, the four-phase equilibrium relations in the structure-H CH₄ + 1,1,2,2,3,3,4-heptafluorocyclopentane (1,1,2,2,3,3,4-HFCP) mixed hydrate system were investigated in a temperature range of (281.05 to 330.12) K and a pressure range up to 373 MPa. The difference between equilibrium pressures in the structure-H CH₄ + 1,1,2,2,3,3,4-HFCP mixed hydrate system and the structure-I simple CH 4 hydrate system gets larger with increase in temperature. The structure-H CH₄ + 1,1,2,2,3,3,4-HFCP mixed hydrate survives even at 330 K and 373 MPa without any structural phase transition. The maximum temperature where the structure-H CH₄ + 1,1,2,2,3,3,4-HFCP mixed hydrate is thermodynamically stable is likely to be beyond that of the structure-H simple CH₄ hydrate.
DC.rights	This document is the Accepted Manuscript version of a Published Work that appeared in final form in The Journal of Physical Chemistry A, © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/jp402777a.
DC.format	102341
citation_title	Structure-H Methane + 1,1,2,2,3,3,4-Heptafluorocyclopentane Mixed Hydrate at Pressures up to 373 Mpa
citation_author	Suzuki, Sumihiro
	Matsumoto, Yuuki
	Katsuta, Yoshito
	Hashimoto, Shunsuke
	Sugahara, Takeshi
	Ohgaki, Kazunari
citation_publisher	American Chemical Society
citation_language	English
citation_date	2013-05-23
citation_journal_title	Journal of Physical Chemistry A
citation_volume	117
citation_issue	20
citation_firstpage	4338
citation_lastpage	4341
citation_doi	https://doi.org/10.1021/jp402777a
citation_public_url	https://hdl.handle.net/11094/102341

Structure-H Methane + 1,1,2,2,3,3,4-Heptafluorocyclopentane Mixed Hydrate at Pressures up to 373 Mpa

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