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RAMAN SPECTROSCOPIC OBSERVATIONS ON THE STRUCTURAL CHARACTERISTICS AND DISSOCIATION BEHAVIOR OF METHANE HYDRATE SYNTHESIZED IN SILICA SANDS WITH VARIOUS SIZES

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Title: RAMAN SPECTROSCOPIC OBSERVATIONS ON THE STRUCTURAL CHARACTERISTICS AND DISSOCIATION BEHAVIOR OF METHANE HYDRATE SYNTHESIZED IN SILICA SANDS WITH VARIOUS SIZES
Author: Liu, Changling; Ye, Yuguang; Zhang, Xunhua; Lu, Hailong; Ripmeester, John A.
Subject Keywords Raman spectroscopy;methane hydrate;silica sand;cage occupancy;hydration number;dissociation behavior
Issue Date: 2008-07
Publicly Available in cIRcle 2008-07-23
Citation: Liu, Changling; Ye, Yuguang; Zhang, Xunhua; Lu, Hailong; Ripmeester, John A. 2008. RAMAN SPECTROSCOPIC OBSERVATIONS ON THE STRUCTURAL CHARACTERISTICS AND DISSOCIATION BEHAVIOR OF METHANE HYDRATE SYNTHESIZED IN SILICA SANDS WITH VARIOUS SIZES. Proceedings of the 6th International Conference on Gas Hydrates (ICGH 2008), Vancouver, British Columbia, CANADA, July 6-10, 2008.
Abstract: 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 μm, 90-106 μm, 106-150 μm, and 150-180 μm. 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 particle size on hydrate composition. During hydrate dissociation, the change in 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.
Affiliation: OtherOther
URI: http://hdl.handle.net/2429/1100
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