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Polymorphic Transformation of Aluminum Hydroxide Precipitated from Reactive NaAl(OH)(4)-NaHCO3 Solution
Li, Yan; Zhang, Yifei; Chen, Fangfang; Yang, Chao; Zhang, Yi; Zhang, YF
2011-04-01
Source PublicationCRYSTAL GROWTH & DESIGN
ISSN1528-7483
Volume11Issue:4Pages:1208-1214
AbstractFor the first time, the polymorphism and nucleation mechanism of the precipitates from concentrated sodium aluminate solution reacted with sodium bicarbonate solution were investigated. The interface tensions of gibbsite and bayerite in the solution were measured as 45.9 and 58.3 mJ/m(2), respectively. Temperature and supersaturation significantly affected the polymorph as well as the polymorphic transformation of the initial precipitates in the reactive solution. Gibbsite solely nucleated at 70 degrees C, while bayerite solely nucleated at 50 degrees C regardless of supersaturation; however, the high supersaturation benefited the nucleation of bayerite and inversely the nucleation of gibbsite at 60 degrees C. The sequence of polymorphic transformation in the reactive solution was proposed as Al-containing cluster -> boehmite -> bayerite -> gibbsite. And the transformation rate from bayerite to gibbsite in the mother solution increased with temperature and caustic concentration.
KeywordX-ray-diffraction Hollow Microspheres Aqueous-solutions Crystallization Nucleation Gibbsite Al(Oh)(3) Temperature Hydrolysis Mechanism
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1021/cg101413e
Indexed BySCI
Language英语
WOS KeywordX-RAY-DIFFRACTION ; HOLLOW MICROSPHERES ; AQUEOUS-SOLUTIONS ; CRYSTALLIZATION ; NUCLEATION ; GIBBSITE ; AL(OH)(3) ; TEMPERATURE ; HYDROLYSIS ; MECHANISM
WOS Research AreaChemistry ; Crystallography ; Materials Science
WOS SubjectChemistry, Multidisciplinary ; Crystallography ; Materials Science, Multidisciplinary
WOS IDWOS:000289050100048
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/5063
Collection湿法冶金清洁生产技术国家工程实验室
Corresponding AuthorZhang, YF
AffiliationChinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Li, Yan,Zhang, Yifei,Chen, Fangfang,et al. Polymorphic Transformation of Aluminum Hydroxide Precipitated from Reactive NaAl(OH)(4)-NaHCO3 Solution[J]. CRYSTAL GROWTH & DESIGN,2011,11(4):1208-1214.
APA Li, Yan,Zhang, Yifei,Chen, Fangfang,Yang, Chao,Zhang, Yi,&Zhang, YF.(2011).Polymorphic Transformation of Aluminum Hydroxide Precipitated from Reactive NaAl(OH)(4)-NaHCO3 Solution.CRYSTAL GROWTH & DESIGN,11(4),1208-1214.
MLA Li, Yan,et al."Polymorphic Transformation of Aluminum Hydroxide Precipitated from Reactive NaAl(OH)(4)-NaHCO3 Solution".CRYSTAL GROWTH & DESIGN 11.4(2011):1208-1214.
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