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Decomposition conditions of methane hydrate in marine sediments from South China Sea
Zhang, Yu1,2; Li, Xiao-Sen1,2; Wang, Yi1,2; Chen, Zhao-Yang1,2; Yan, Ke-Feng1,2
2016-04-15
Source PublicationFLUID PHASE EQUILIBRIA
Volume413Pages:110-115
AbstractDecomposition conditions of methane hydrate in marine sediments from South China Sea were measured using multi-step decomposition method. Four different samples of the marine sediments were used in the experiments. The pore distribution, the surface area, particle size and the surface texture were measured and observed. The experimental results indicated that the final decomposition temperatures are shifted lower than those for bulk hydrates at the same pressure for different marine sediments and different water saturations. Temperature shifts are more negative for smaller initial water saturation. The surface textures and pore of the sediments both affect the equilibrium condition of methane hydrate. Using the Clausius-Clapeyron equation, the enthalpy of hydrate dissociation in marine sediments was calculated. It was found that the enthalpy of hydrate dissociation in marine sediments with lower water saturation is higher than that at the bulk state. (C) 2015 Elsevier B.V. All rights reserved.
SubtypeArticle
KeywordMethane Hydrate Marine Sediments Equilibrium Decomposition Condition
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.fluid.2015.12.004
WOS Subject ExtendedThermodynamics ; Chemistry ; Engineering
WOS KeywordPOROUS-MEDIA ; DISSOCIATION ENTHALPY ; CARBON-DIOXIDE ; GUEST SIZE ; PORE-SIZE ; EQUILIBRIA ; SILICA ; TEMPERATURES ; PRESSURES ; ENERGY
Indexed BySCI
Language英语
WOS SubjectThermodynamics ; Chemistry, Physical ; Engineering, Chemical
WOS IDWOS:000371554100018
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Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/11130
Collection中国科学院广州能源研究所
Affiliation1.Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Guangdong, Peoples R China
2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Yu,Li, Xiao-Sen,Wang, Yi,et al. Decomposition conditions of methane hydrate in marine sediments from South China Sea[J]. FLUID PHASE EQUILIBRIA,2016,413:110-115.
APA Zhang, Yu,Li, Xiao-Sen,Wang, Yi,Chen, Zhao-Yang,&Yan, Ke-Feng.(2016).Decomposition conditions of methane hydrate in marine sediments from South China Sea.FLUID PHASE EQUILIBRIA,413,110-115.
MLA Zhang, Yu,et al."Decomposition conditions of methane hydrate in marine sediments from South China Sea".FLUID PHASE EQUILIBRIA 413(2016):110-115.
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