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Synthesis, Characterization and Formation Mechanism of Friedel's Salt (FS: 3CaO center dot Al2O3 center dot CaCl2 center dot 10H(2)O) by the Reaction of Calcium Chloride with Sodium ithuninate
Ma Jiayu1,2; Li Zhibao3; Jiang Yuehua4; Yang Xiaoping1
2015-02-01
Source PublicationJOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
ISSN1000-2413
Volume30Issue:1Pages:76-83
Abstract

The synthesis of Friedel's salt (FS: 3CaO center dot Al2O3 center dot CaCl2 center dot 10H(2)O) by the reaction of calcium chloride with sodium aluminate was investigated. Factors affecting the preparation of Friedel's salt, such as reaction temperature, initial concentration, titration speed, aging time and molar Ca/Al ratio were studied in detail. XRD, SEM images and particle size distribution show that the reaction temperature, aging time and molar Ca/Al ratio have significant effect on the composition, crystal morphology, and average particle size of the obtained samples. In addition, the initial CaCl2 concentration and NaAlO2 titration speed do not significantly influence the morphology and particle sue distribution of Friedel's salt. With the optimization of the operating conditions, the crystals can grow up to a average size of about 28 mu m, showing flat hexagonal (or pseudohexagonal) crystal morphology. Moreover, two potential mechanisms of Friedel's salt formation including adsorption mechanism and anion-exchange mechanism were discussed. In the 'adsorption mechanism, Frieders salt fonus due to the adsorption of the bulk Cl- ions present in the solution into the interlayers of the principal layers, [Ca2Al(OH-)(6)center dot 2H(2)O](+), in order to balance the charge. In the anion-exchange mechanism, the freechloride ions bind with the AFm (a family of hydrated compounds found in cement) hydrates to form Friedel's salt by anion-exchange with the ions present in the interlayers of the principal layer, [Ca2Al(OH-)(6)center dot 2H(2)O](+)-OH-.

KeywordSynthesis Characterization Formation Mechanism Friedel's Salt
SubtypeArticle
Subject AreaMaterials Science
WOS HeadingsScience & Technology ; Technology
DOI10.1007/s11595-015-1104-y
Indexed BySCI
Language英语
WOS KeywordLayered Double Hydroxides ; Zn-cr-cl ; Aluminate ; Removal ; Binding ; Phases
Funding ProjectInternational Science & Technology Cooperation Program of China [2013DFB70220] ; National Natural Science Foundation of China [21076212] ; Natural Science Foundation of Guizhou Province of China [[2014]2003]
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000351909900016
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/13828
Collection研究所(批量导入)
Corresponding AuthorMa Jiayu
Affiliation1.Guiyang Aluminium Magnesium Design & Res Inst Co, Natl Engn & Technol Res Ctr Aluminium & Magnesium, Guiyang 550081, Peoples R China
2.Wuhan Inst Technol, Minist Educ, Key Lab Green Chem Proc, Wuhan 430073, Peoples R China
3.Chinese Acad Sci, Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China
4.Shenyang Aluminium & Magnesium Engn & Res Inst Co, Shenyang 110001, Peoples R China
Recommended Citation
GB/T 7714
Ma Jiayu,Li Zhibao,Jiang Yuehua,et al. Synthesis, Characterization and Formation Mechanism of Friedel's Salt (FS: 3CaO center dot Al2O3 center dot CaCl2 center dot 10H(2)O) by the Reaction of Calcium Chloride with Sodium ithuninate[J]. JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION,2015,30(1):76-83.
APA Ma Jiayu,Li Zhibao,Jiang Yuehua,&Yang Xiaoping.(2015).Synthesis, Characterization and Formation Mechanism of Friedel's Salt (FS: 3CaO center dot Al2O3 center dot CaCl2 center dot 10H(2)O) by the Reaction of Calcium Chloride with Sodium ithuninate.JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION,30(1),76-83.
MLA Ma Jiayu,et al."Synthesis, Characterization and Formation Mechanism of Friedel's Salt (FS: 3CaO center dot Al2O3 center dot CaCl2 center dot 10H(2)O) by the Reaction of Calcium Chloride with Sodium ithuninate".JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION 30.1(2015):76-83.
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