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Efficient purification of Al-30 by organic complexation method
Liu, Libing; Yang, Qinxue; Wang, Pin; Xiao, Feng; Jiao, Ruyuan; An, Guangyu; Wang, Dongsheng
AbstractA method was developed for preparing high purity Al30O8(OH)(56)(H2O)(24)(18+)(Al-30) through elimination of impurities by complexation. Polyaluminum chloride II (PAC(30)) with Al-c, content of 75% was adopted as the source of Al-30. The PAC(30) was prepared under conditions of total aluminum concentration 0.1 mol/L and OH-/Al ratio 2.2 to obtain the highest content of Al-30. A precipitation/metathesis method, organic solvent precipitation method and organic complexation method were examined to separate and purify Al-30. It was found that only by the organic complexation method could high purity Al(30 )products be obtained in large yield economically. In the experiments, benzoic acid was used as the coordinating reagent to decompose the main impurity AlO4Al12(OH)(24)(H2O)(12)(7+) (Al-13), and the Al-30 product could be obtained by precipitation and metathesis operations. It was noteworthy that the decomposition of impurities by benzoic acid could be completed in 2 hr. The Al(30 )product was characterized by Ferron assay, 27 Al-NMR, SEM, XRD and TGA. The results showed that the purity of the Al-30 product could exceed 92%. (C) 2019 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
KeywordPolyaluminum chloride (PAC) Al-13 Al-30 Organic complexation Precipitation/metathesis
Document Type期刊论文
Affiliation1.Univ Chinese Acad Sci, Beijing 100085, Peoples R China
2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China
3.China Univ Geosci, Fac Mat Sci & Chem, Wuhan 430074, Hubei, Peoples R China
Recommended Citation
GB/T 7714
Liu, Libing,Yang, Qinxue,Wang, Pin,et al. Efficient purification of Al-30 by organic complexation method[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2019,80:240-247.
APA Liu, Libing.,Yang, Qinxue.,Wang, Pin.,Xiao, Feng.,Jiao, Ruyuan.,...&Wang, Dongsheng.(2019).Efficient purification of Al-30 by organic complexation method.JOURNAL OF ENVIRONMENTAL SCIENCES,80,240-247.
MLA Liu, Libing,et al."Efficient purification of Al-30 by organic complexation method".JOURNAL OF ENVIRONMENTAL SCIENCES 80(2019):240-247.
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