Transformation of methane hydrate to carbon dioxide hydrate: In situ Raman spectroscopic observations

被引：116
|
作者：
Yoon, JH [1 ]
Kawamura, T
Yamamoto, Y
Komai, T
机构：
[1] Natl Inst Adv Ind Sci & Technol, Inst Energy Utilizat, Tsukuba, Ibaraki 3058569, Japan
[2] Natl Inst Adv Ind Sci & Technol, Inst Georesources & Environm, Tsukuba, Ibaraki 3058569, Japan
来源：
JOURNAL OF PHYSICAL CHEMISTRY A | 2004年 / 108卷 / 23期
关键词：
D O I：
10.1021/jp049683l
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：
An in situ Raman spectroscopy study on the guest replacement of methane hydrate with carbon dioxide at high pressures is presented. The surface shielding of carbon dioxide hydrate formed in the outer layer plays a key function, retarding dissociation of methane hydrate in the core. A thorough investigation of Raman spectra of the vibration modes of water molecules enables us to understand the phenomena of the coexistence of methane and carbon dioxide hydrates and water phase for guest replacement reactions. These results should aid further efforts in the study of guest stability of clathrate hydrate as well as future technological applications.
引用
收藏
页码：5057 / 5059
页数：3
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