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题名:
The dehydration of MgCl2 center dot 6H(2)O in MgCl2 center dot 6H(2)O-KCl-NH4Cl system
作者: Zhang, Zhimin1; Lu, Xuchen1,3; Wang, Tizhuang1; Yan, Yan1; Pan Feng1,2
刊名: JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
出版日期: 2014-11-01
卷号: 110, 期号:NOV., 页码:248-253
关键词: Dehydration ; Magnesium chloride hexahydrate ; Hydrolysis ; Anhydrous magnesium chloride
收录类别: SCI
WOS记录号: WOS:000347496800029
DOI: 10.1016/j.jaap.2014.09.009
其他题名: J. Anal. Appl. Pyrolysis
文章类型: Article
中文摘要: 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.
英文摘要: 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.
WOS标题词: Science & Technology ; Physical Sciences ; Technology
类目[WOS]: Chemistry, Analytical ; Spectroscopy
研究领域[WOS]: Chemistry ; Spectroscopy
关键词[WOS]: ANHYDROUS MAGNESIUM-CHLORIDE ; THERMAL-DECOMPOSITION ; HEXAHYDRATE ; KINETICS
原文出处: 查看原文
语种: 英语
ISSN号: 0165-2370
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ipe.ac.cn/handle/122111/11897
Appears in Collections:研究所(批量导入)_期刊论文

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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

Recommended Citation:
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.
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