The dehydration of MgCl2 center dot 6H(2)O in MgCl2 center dot 6H(2)O-KCl-NH4Cl system

doi:10.1016/j.jaap.2014.09.009

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	The dehydration of MgCl2 center dot 6H(2)O in MgCl2 center dot 6H(2)O-KCl-NH4Cl system
其他题名	J. Anal. Appl. Pyrolysis
	Zhang, Zhimin 1; Lu, Xuchen 1,3; Wang, Tizhuang 1; Yan, Yan 1; Pan, Feng 1,2
	2014-11-01
发表期刊	JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
ISSN	0165-2370
卷号	110 期号:NOV.页码:248-253
摘要	The dehydration of MgCl2 center dot 6H(2)O in MgCl2 center dot 6H(2)O-NH4Cl-KCl system was investigated. The dehydration process was characterized by X-ray diffraction and chemical analysis. The dehydration effects of MgCl2 center dot 6H(2)O in different systems were compared. The dehydration mechanism of MgCl2 center dot 6H(2)O in MgCl2 center dot 6H(2)O-NH4Cl-KCl system was proposed and discussed. The formation of NH4Cl center dot MgCl2 center dot nH(2)O (6 > n >= 0) below 300 degrees C can effectively suppress hydrolysis. The anhydrous KMgCl3 formed above 400 degrees C is more stable than anhydrous MgCl2 at elevated temperature, which can effectively protect the dehydration product from hydrolyzing at high temperature. The content of MgO in anhydrous MgCl2 was 0.02 wt.% when dehydrating MgCl2 center dot 6H(2)O in MgCl2 center dot 6H(2)O-KCl-NH4Cl system with the molar ratio of MgCl2 center dot 6H(2)O:KCl:NH4Cl was 1:2.87:1. (C) 2014 Elsevier B.V. All rights reserved.; The dehydration of MgCl2 center dot 6H(2)O in MgCl2 center dot 6H(2)O-NH4Cl-KCl system was investigated. The dehydration process was characterized by X-ray diffraction and chemical analysis. The dehydration effects of MgCl2 center dot 6H(2)O in different systems were compared. The dehydration mechanism of MgCl2 center dot 6H(2)O in MgCl2 center dot 6H(2)O-NH4Cl-KCl system was proposed and discussed. The formation of NH4Cl center dot MgCl2 center dot nH(2)O (6 > n >= 0) below 300 degrees C can effectively suppress hydrolysis. The anhydrous KMgCl3 formed above 400 degrees C is more stable than anhydrous MgCl2 at elevated temperature, which can effectively protect the dehydration product from hydrolyzing at high temperature. The content of MgO in anhydrous MgCl2 was 0.02 wt.% when dehydrating MgCl2 center dot 6H(2)O in MgCl2 center dot 6H(2)O-KCl-NH4Cl system with the molar ratio of MgCl2 center dot 6H(2)O:KCl:NH4Cl was 1:2.87:1. (C) 2014 Elsevier B.V. All rights reserved.
关键词	Dehydration Magnesium Chloride Hexahydrate Hydrolysis Anhydrous Magnesium Chloride
文章类型	Article
WOS标题词	Science & Technology ; Physical Sciences ; Technology
DOI	10.1016/j.jaap.2014.09.009
URL	查看原文
收录类别	SCI
语种	英语
关键词[WOS]	ANHYDROUS MAGNESIUM-CHLORIDE ; THERMAL-DECOMPOSITION ; HEXAHYDRATE ; KINETICS
WOS研究方向	Chemistry ; Spectroscopy
WOS类目	Chemistry, Analytical ; Spectroscopy
WOS记录号	WOS:000347496800029
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ipe.ac.cn/handle/122111/11897
专题	研究所（批量导入）
作者单位	1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.United Res Ctr Resource & Mat, Wuhai 016000, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Zhimin,Lu, Xuchen,Wang, Tizhuang,et al. The dehydration of MgCl2 center dot 6H(2)O in MgCl2 center dot 6H(2)O-KCl-NH4Cl system[J]. JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS,2014,110(NOV.):248-253.
APA	Zhang, Zhimin,Lu, Xuchen,Wang, Tizhuang,Yan, Yan,&Pan, Feng.(2014).The dehydration of MgCl2 center dot 6H(2)O in MgCl2 center dot 6H(2)O-KCl-NH4Cl system.JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS,110(NOV.),248-253.
MLA	Zhang, Zhimin,et al."The dehydration of MgCl2 center dot 6H(2)O in MgCl2 center dot 6H(2)O-KCl-NH4Cl system".JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS 110.NOV.(2014):248-253.

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