Raman Spectroscopic Observations on the Structural Characteristics and Dissociation Behavior of Methane Hydrate Synthesized in Silica Sands with Various Sizes

被引：42
|
作者：
Liu, Changling [1 ]
Lu, Hailong [2 ]
Ye, Yuguang [1 ]
Ripmeester, John A. [2 ]
Zhang, Xunhua [1 ]
机构：
[1] Qingdao Inst Marine Geol, Qingdao 266071, Peoples R China
[2] Natl Res Council Canada, Steacie Inst Mol Sci, Ottawa, ON K1A 0R6, Canada
来源：
ENERGY & FUELS | 2008年 / 22卷 / 06期
关键词：
D O I：
10.1021/ef800440s
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Raman spectroscopic observations of the characteristics and dissociation of methane hydrate were carried out on hydrates synthesized in silica sands with particle sizes of 53-75, 90-106, 106-150, and 150-180,mu m. The results obtained indicate that methane hydrates formed in silica sands had similar characteristics regarding cage occupancy and hydration number (5.99) to bulk hydrate, indicative of no influence of the particle size on hydrate composition. During hydrate dissociation, the change in the average intensity ratio of large to small cages were generally consistent with that of bulk hydrate but dropped dramatically after a certain time, and this turning point seems to be related to the particle size of silica sands.
引用
收藏
页码：3986 / 3988
页数：3
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