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The dehydration of MgCl2 center dot 6H(2)O by inhibition of hydrolysis and conversion of hydrolysate
Zhang, Zhimin; Lu, Xuchen; Yan, Yan; Wang, Tizhuang
2019-03-01
Source PublicationJOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
ISSN0165-2370
Volume138Pages:114-119
AbstractThe hydrolysis of magnesium chloride hexahydrate and the countermeasures against hydrolysis were investigated. X-ray diffraction, TG-DSC analysis, and chemical analysis were employed to characterize the hydrolysis process, and then the hydrolysis reactions occurred at different temperatures were determined. After that, the combination of inhibition of hydrolysis and conversion of hydrolysate was adopted to cope with the different hydrolysis reactions. The hydrolysis process of MgCl2 center dot 6H(2)O includes the hydrolysis of dehydrated magnesium chloride below 300 degrees C with MgOHCl center dot xH(2)O as hydrolysate and the hydrolysis of anhydrous MgCl2 over 400 degrees C with MgO as hydrolysate. The inhibition of hydrolysis by forming dehydrated ammonium carnallite (below 300 degrees C) and the conversion of hydrolysate (above 400 degrees C) can effectively resolve the hydrolysis problem occurred at different stages. The dimension of the mixture of MgCl2 center dot 6H(2)O and NH4Cl influences the mass transfer and reaction process. When the ratio of height to diameter of the mixture was over 9:1, the magnesia content in anhydrous MgCl2 reached 0.1 wt.%.
KeywordMagnesium chloride hexahydrate Hydrolysis Anhydrous magnesium chloride Dehydration
DOI10.1016/j.jaap.2018.12.014
Language英语
WOS KeywordANHYDROUS MAGNESIUM-CHLORIDE ; THERMAL-DECOMPOSITION ; MGOHCL ; DTA
Funding ProjectNational Science Foundation of China[51501178] ; Open Research Fund of State Key Laboratory of Multiphase Complex Systems[MPCS-2017-D-09] ; Autonomous Research Fund of State Key Laboratory of Multiphase Complex Systems[MPCS-2017-A-05]
WOS Research AreaChemistry ; Energy & Fuels ; Engineering
WOS SubjectChemistry, Analytical ; Energy & Fuels ; Engineering, Chemical
Funding OrganizationNational Science Foundation of China ; Open Research Fund of State Key Laboratory of Multiphase Complex Systems ; Autonomous Research Fund of State Key Laboratory of Multiphase Complex Systems
WOS IDWOS:000457854800011
PublisherELSEVIER SCIENCE BV
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Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/27922
Collection中国科学院过程工程研究所
Corresponding AuthorLu, Xuchen
AffiliationChinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Zhimin,Lu, Xuchen,Yan, Yan,et al. The dehydration of MgCl2 center dot 6H(2)O by inhibition of hydrolysis and conversion of hydrolysate[J]. JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS,2019,138:114-119.
APA Zhang, Zhimin,Lu, Xuchen,Yan, Yan,&Wang, Tizhuang.(2019).The dehydration of MgCl2 center dot 6H(2)O by inhibition of hydrolysis and conversion of hydrolysate.JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS,138,114-119.
MLA Zhang, Zhimin,et al."The dehydration of MgCl2 center dot 6H(2)O by inhibition of hydrolysis and conversion of hydrolysate".JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS 138(2019):114-119.
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