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Acquisition and evaluation of thermodynamic data for mirabilite-thenardite equilibria at 0.1 MPa
Wang, Yunsheng1,2; Chou, I-Ming3; Zheng, Mianping1,2; Hou, Xianhua1,2; I-Ming Chou
2017-08-01
Source PublicationJOURNAL OF CHEMICAL THERMODYNAMICS
Volume111Issue:2017Pages:221-227
AbstractMirabilite and thenardite are common minerals found in marine evaporite deposits and also in saline lakes as precipitates. In this study, mirabilite-thenardite equilibria were determined along four humidity-buffer curves at 0.1 MPa and between 285.15 K and 305.15 K. Results for the reaction Na(2)SO(4 center dot)10H(2)O((s)) = Na2SO4(s) + 10H(2)O((g)), based on tight reversals along each humidity buffer, can be represented by ln K = 174.032-62815.11/T, where s is solid, g is gas, K is the equilibrium constant and T is temperature in K. Our data are in excellent agreement with several previous vapor-pressure measurements and are consistent with the solubility data reported in the literature. Thermodynamic analysis of these data yields 90.858 kJ.mol (1) for the standard Gibbs free energy of reaction, which is in good agreement with the values of 90.69 kJ.mol 1 and 90.34 kJ.mol (1) calculated from the thermodynamic data compiled and evaluated previously from two sources. (C) 2017 Elsevier Ltd.
SubtypeArticle
KeywordMirabilite Thenardite Humidity Buffer Thermodynamic Properties
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.jct.2017.03.028
Indexed BySCI
Language英语
WOS KeywordSODIUM-SULFATE DECAHYDRATE ; HUMIDITY-BUFFER TECHNIQUE ; HYDRATED CRYSTALS ; VAPOR-PRESSURE ; SALT ; HEPTAHYDRATE ; DISSOCIATION ; HEATS ; CRYSTALLIZATION ; STABILITY
WOS SubjectThermodynamics ; Chemistry, Physical
WOS IDWOS:000402482500024
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Document Type期刊论文
Version出版稿
Identifierhttp://ir.idsse.ac.cn/handle/183446/1708
Collection深海科学研究部_深海极端环境模拟研究实验室
Corresponding AuthorI-Ming Chou
Affiliation1.CAGS, MLR Key Lab Saline Lake Resources & Environm, Inst Mineral Resources, Beijing 100037, Peoples R China
2.Chinese Acad Geol Sci, R&D Ctr Saline Lakes & Epithermal Deposits, Beijing 100037, Peoples R China
3.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572000, Hainan, Peoples R China
Recommended Citation
GB/T 7714
Wang, Yunsheng,Chou, I-Ming,Zheng, Mianping,et al. Acquisition and evaluation of thermodynamic data for mirabilite-thenardite equilibria at 0.1 MPa[J]. JOURNAL OF CHEMICAL THERMODYNAMICS,2017,111(2017):221-227.
APA Wang, Yunsheng,Chou, I-Ming,Zheng, Mianping,Hou, Xianhua,&I-Ming Chou.(2017).Acquisition and evaluation of thermodynamic data for mirabilite-thenardite equilibria at 0.1 MPa.JOURNAL OF CHEMICAL THERMODYNAMICS,111(2017),221-227.
MLA Wang, Yunsheng,et al."Acquisition and evaluation of thermodynamic data for mirabilite-thenardite equilibria at 0.1 MPa".JOURNAL OF CHEMICAL THERMODYNAMICS 111.2017(2017):221-227.
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