题名: Acquisition and evaluation of thermodynamic data for mirabilite-thenardite equilibria at 0.1 MPa
作者: Wang, Yunsheng1,2; Chou, I-Ming3; Zheng, Mianping1,2; Hou, Xianhua1,2
刊名: JOURNAL OF CHEMICAL THERMODYNAMICS
出版日期: 2017-08-01
卷号: 111, 期号:2017, 页码:221-227
关键词: Mirabilite ; Thenardite ; Humidity buffer ; Thermodynamic properties
通讯作者: I-Ming Chou
英文摘要: Mirabilite 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.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Thermodynamics ; Chemistry, Physical
关键词[WOS]: SODIUM-SULFATE DECAHYDRATE ; HUMIDITY-BUFFER TECHNIQUE ; HYDRATED CRYSTALS ; VAPOR-PRESSURE ; SALT ; HEPTAHYDRATE ; DISSOCIATION ; HEATS ; CRYSTALLIZATION ; STABILITY
收录类别: SCI
语种: 英语
WOS记录号: WOS:000402482500024
Citation statistics:
内容类型: 期刊论文
版本: 出版稿
URI标识: [http://ir.idsse.ac.cn/handle/183446/1708]  
Appears in Collections:深海科学与工程研究所_深海科学研究部_深海极端环境模拟研究实验室_期刊论文


作者单位: 1.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:
Yunsheng Wang,I-Ming Chou,Mianping Zheng,et al. Acquisition and evaluation of thermodynamic data for mirabilite-thenardite equilibria at 0.1 MPa[J]. J. Chem. Thermodynamics,2017,111(2017):221-227.
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