Study on Phase Transition Process of NaCl-H2O and NaCl-KCl-H2O at Low Temperature with in Situ XRD

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	Study on Phase Transition Process of NaCl-H2O and NaCl-KCl-H2O at Low Temperature with in Situ XRD
	Yang Hong-jun; Chai Xiao-li; Wang Min; Li Bing
	2018-03-01
发表期刊	SPECTROSCOPY AND SPECTRAL ANALYSIS
卷号	38 期号:3 页码:953-957
关键词	Sodium Chloride Potassium Chloride Low Temperature Phase Transition In Situ Xrd
摘要	The diffraction patterns of two systems-NaCl-H2O and NaCl-KCl-H2O at low temperature were determined with in situ XRD. The details of systems' phase transition were further obtained. The solids were analyzed according to the patterns. For NaCl-H2O system, the phase transitions were different because of their different compositions. For the solution of 26. 25% NaCl the solids included ice, NaCl, NaCl center dot XH2O(X<2), NaCl center dot 2H(2)O in temperature range of -20 similar to-25 degrees C, for the solution of 25. 70% NaCl the phase transition did not occur under experimental conditions. For NaCl-KCl-H2O system, the phase transitions were different too. For the solution of 20. 03% NaCl and 10. 19% KCl the solids were KCl and NaCl in temperature range of 0 25 degrees C, for the solution of 22. 40% NaCl and 7. 28% KCl the solid was KCl only in temperature range of -10 similar to-25 degrees C, as for the solution of 21. 90% NaCl and 6. 46% KCl there was no phase transition under the experimental conditions. The results show that there are some differences between the experimental and theoretical results due to their different states. The combination of sodium chloride with water results in the appearance of NaCl center dot 2H(2)O. Crystallization processes as well as temperature control the occurrence of the phase transition. The phase transitions of the systems are results from comprehensive influences of several factors.
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/6446
专题	青海盐湖研究所知识仓储中国科学院青海盐湖研究所盐湖资源与化学实验室
作者单位	Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & High Efficient Utilizat Salt, Xining 810008, Qinghai, Peoples R China
推荐引用方式 GB/T 7714	Yang Hong-jun,Chai Xiao-li,Wang Min,et al. Study on Phase Transition Process of NaCl-H2O and NaCl-KCl-H2O at Low Temperature with in Situ XRD[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2018,38(3):953-957.
APA	Yang Hong-jun,Chai Xiao-li,Wang Min,&Li Bing.(2018).Study on Phase Transition Process of NaCl-H2O and NaCl-KCl-H2O at Low Temperature with in Situ XRD.SPECTROSCOPY AND SPECTRAL ANALYSIS,38(3),953-957.
MLA	Yang Hong-jun,et al."Study on Phase Transition Process of NaCl-H2O and NaCl-KCl-H2O at Low Temperature with in Situ XRD".SPECTROSCOPY AND SPECTRAL ANALYSIS 38.3(2018):953-957.