Separation of Al₁₃ from polyaluminum chloride by sulfate precipitation and nitrate metathesis

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• 作者：Baoyou Shi ; Guohong Li ; Dongsheng Wang ; Hongxiao Tang
• 关键词：Al₁₃ ; Polyaluminum chloride (PACl) ; Separation ; Purification
• 刊名：Separation and Purification Technology
• 出版年：2007
• 期刊代码：78_13835866
• 类别：ce
• 出版时间：15 March 2007
• 卷：54
• 期：1
• 页码：88-95
• 文件大小：833 K

摘要

A methodology of preparing high purity Al₁₃ through chemical precipitation/separation was developed. Polyaluminum chloride (PACl) with medium high concentration (0.1–1.1 mol/L as Al) was used as the source of Al₁₃. The factors that affect separation process were thoroughly examined. Intermediate and final products of Al₁₃ were characterized morphologically and structurally using SEM, XRD, and solid-state ²⁷Al NMR. The purity of obtained Al₁₃ product was verified using both ferron assay and ²⁷Al NMR. It was found that the separation of Al₁₃ from medium high concentration PACl was feasible and the purity of Al₁₃ product could be higher than 95%.