Phase transformation of methane hydrate under high pressure

被引:6
|
作者
Sun, Q [1 ]
Duan, TY
Zheng, HF
Ji, JQ
Wu, XY
机构
[1] Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China
[2] Chinese Acad Sci, Inst Geophys, Beijing 100029, Peoples R China
来源
JOURNAL OF CHEMICAL PHYSICS | 2005年 / 122卷 / 02期
关键词
D O I
10.1063/1.1830411
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
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 I<---->structure 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. (C) 2005 American Institute of Physics.
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页数:3
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