Phase transformation of methane hydrate under high pressure

Phase transformation of methane hydrate under high pressure

In situ Raman spectroscopy is employed to study the phase behavior of methane hydrate at high pressure. The structure 1 of methane hydrate can be maintained up to 950 MPa at 299 K. The transformation of structure Istructure H+water+CH4 occurs at 880 MPa and 323 K. The structure H of methane hydrate,...

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Veröffentlicht in:The Journal of chemical physics 2005-01, Vol.122 (2), p.024714-024714
Hauptverfasser: Sun, Qiang, Duan, Ti-Yu, Zheng, Hai-Fei, Ji, Jian-Qing, Wu, Xiang-Yang
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container_title The Journal of chemical physics
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Duan, Ti-Yu
Zheng, Hai-Fei
Ji, Jian-Qing
Wu, Xiang-Yang
description In situ Raman spectroscopy is employed to study the phase behavior of methane hydrate at high pressure. The structure 1 of methane hydrate can be maintained up to 950 MPa at 299 K. The transformation of structure Istructure H+water+CH4 occurs at 880 MPa and 323 K. The structure H of methane hydrate, however, decomposes to methane and water at 960 MPa and 348 K. The initiation mechanism of methane hydrate sI is also discussed.
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title Phase transformation of methane hydrate under high pressure
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