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Clathrate hydrate dissociation conditions and structure of the methane plus cyclopentane plus trimethylene sulfide hydrate in NaCl aqueous solution
Lv, Qiunan1,2,3; Li, Lu1,2,3,4; Li, Xiaosen1,2,3; Chen, Zhaoyang1,2,3
2016-10-15
Source PublicationFLUID PHASE EQUILIBRIA
Volume425Pages:305-311
AbstractIn present work, the phase equilibrium of methane + cyclopentane (CP) + timethylene sulfide (TMS) hydrate were measured in NaCI solution at the temperature range from 286.42 to 303.77 K and the pressure varying from 1.16 to 12.49 MPa. The experimental data were measured with an isochoric T-cycle method. The phase equilibrium pressure of organic compounds (Vcp:V-TMs = 4:1) + CH4 hydrate increases with the temperature and the NaCl concentration. When the temperature was higher, the effect of temperature and NaCl concentration on the phase equilibrium pressure was more remarkable. The dissociation enthalpies of organic compounds (Vcp:V-TMs = 4:1) + CH4 hydrate in 3.5, 5.0, 7.0, 10% (mass fraction) NaCl solution were calculated through the ClausiusClapeyron equation based on the phase equilibrium data. The dissociation enthalpy decreases with the increase of either the temperature or the NaCl concentration. The crystal structure of organic compounds (Vcp:V-TMs = 4:1) + CH4 hydrate was determined by using Raman spectroscopy. Methane was present only in the small sII cavity, cyclopentane and timethylene sulfide were all in the large sII cavities. (C) 2016 Elsevier B.V. All rights reserved.
SubtypeArticle
KeywordPhase Equilibrium Hydrate Dissociation Enthalpy Raman Spectroscopy
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.fluid.2016.06.020
WOS Subject ExtendedThermodynamics ; Chemistry ; Engineering
WOS KeywordBUTYL AMMONIUM BROMIDE ; GAS HYDRATE ; PHASE-EQUILIBRIUM ; THERMODYNAMIC STABILITY ; WATER-SYSTEMS ; ENTHALPIES ; HYDROGEN ; SEA ; DEPRESSURIZATION ; PREDICTION
Indexed BySCI
Language英语
Funding OrganizationNational Science Fund for Distinguished Young Scholars of China(51225603) ; National Natural Science Foundation of China(51506203 ; International S&T Cooperation Program of China(2015DFA61790) ; PetroChina - Chinese Academy of Sciences High-Level Strategic Alliance Program(2015A-4813-2) ; CNOOC Research Institute Entrusted Project(CRI2015RC-PS0053OCN) ; 51376183)
WOS SubjectThermodynamics ; Chemistry, Physical ; Engineering, Chemical
WOS IDWOS:000382341700040
Citation statistics
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/11842
Collection中国科学院广州能源研究所
Affiliation1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China
2.Guangdong Key Lab New & Renewable Energy Res Dev, Guangzhou 510640, Guangdong, Peoples R China
3.Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Guangdong, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100083, Peoples R China
First Author AffilicationGuangZhou Institute of Energy Conversion,Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Lv, Qiunan,Li, Lu,Li, Xiaosen,et al. Clathrate hydrate dissociation conditions and structure of the methane plus cyclopentane plus trimethylene sulfide hydrate in NaCl aqueous solution[J]. FLUID PHASE EQUILIBRIA,2016,425:305-311.
APA Lv, Qiunan,Li, Lu,Li, Xiaosen,&Chen, Zhaoyang.(2016).Clathrate hydrate dissociation conditions and structure of the methane plus cyclopentane plus trimethylene sulfide hydrate in NaCl aqueous solution.FLUID PHASE EQUILIBRIA,425,305-311.
MLA Lv, Qiunan,et al."Clathrate hydrate dissociation conditions and structure of the methane plus cyclopentane plus trimethylene sulfide hydrate in NaCl aqueous solution".FLUID PHASE EQUILIBRIA 425(2016):305-311.
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