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Phase equilibria of CO2 hydrate in NaCl-MgCl2 aqueous solutions | |
Zha, Li1,2; Liang, De-Qing1![]() ![]() | |
2012-12-01 | |
Source Publication | JOURNAL OF CHEMICAL THERMODYNAMICS
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Volume | 55Pages:110-114 |
Abstract | Phase equilibrium data for CO2 hydrate in presence of binary NaCl-MgCl2 aqueous solutions were obtained at four different concentrations (2 wt%NaCl-8 wt%MgCl2, 8 wt%NaCl-2wt%MgCl2, 5 wt% NaCl-15 wt%MgCl2, 15 wt% NaCl-5 wt%MgCl2) in the temperature range of (258.63 to 276.45) K and in the pressure range of (1.34 to 3.41) MPa, respectively. The measurements were carried out by employing isochoric pressure search method with uncertainties of +/- 0.1 K for temperature and +/- 0.02 MPa for pressure. The hydrate equilibrium data for the (CO2 + water) system were compared with some experimental data from the literature, and the acceptable agreement demonstrated the reliability of the experimental method used in this work. The van der Waals and Platteeuw (vdW-P) solid solution theory was used to model the hydrate phase, and the equation of Weiss combined with Pitzer-based model was applied to characterize the activity of water. The predicted results were in good consistency with the experimental data, and the average pressure deviation was 5.13%. (C) 2012 Elsevier Ltd. All rights reserved. |
Subtype | Article |
Keyword | Co2 Hydrate Phase Equilibrium Mgcl2 Nacl |
WOS Headings | Science & Technology ; Physical Sciences |
DOI | 10.1016/j.jct.2012.06.025 |
WOS Subject Extended | Thermodynamics ; Chemistry |
WOS Keyword | CARBON-DIOXIDE ; ELECTROLYTE SOLUTIONS ; DISSOCIATION PRESSURES ; CLATHRATE-HYDRATE ; GAS-MIXTURES ; METHANE ; MGCL2 ; PREDICTION ; ALCOHOL ; SYSTEMS |
Indexed By | SCI |
Language | 英语 |
WOS Subject | Thermodynamics ; Chemistry, Physical |
WOS ID | WOS:000308075000016 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.giec.ac.cn/handle/344007/10159 |
Collection | 中国科学院广州能源研究所 |
Affiliation | 1.Chinese Acad Sci, Key Lab Renewable Energy & Nat Gas Hydrate, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
Recommended Citation GB/T 7714 | Zha, Li,Liang, De-Qing,Li, Dong-Liang. Phase equilibria of CO2 hydrate in NaCl-MgCl2 aqueous solutions[J]. JOURNAL OF CHEMICAL THERMODYNAMICS,2012,55:110-114. |
APA | Zha, Li,Liang, De-Qing,&Li, Dong-Liang.(2012).Phase equilibria of CO2 hydrate in NaCl-MgCl2 aqueous solutions.JOURNAL OF CHEMICAL THERMODYNAMICS,55,110-114. |
MLA | Zha, Li,et al."Phase equilibria of CO2 hydrate in NaCl-MgCl2 aqueous solutions".JOURNAL OF CHEMICAL THERMODYNAMICS 55(2012):110-114. |
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