A simple aqueous phase synthesis of high surface area aluminum fluoride and its bulk and surface structure

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• 作者：Wolfgang Kleist ; Carmen Haeß ; ner ; Oksana Storcheva ; Klaus Kö ; hler
• 关键词：Aluminum fluoride synthesis ; High surface area ; Surface structure
• 刊名：Inorganica Chimica Acta
• 出版年：2006
• 出版时间：1 December 2006
• 年：2006
• 卷：359
• 期：15
• 页码：4851-4854
• 全文大小：160 K

文摘

A simple novel synthesis route to aluminum fluoride, AlF₃, from aqueous phase is reported. Al₂O₃ is dissolved in aqueous hydrofluoric acid, HF, and re-precipitated as AlF₃ · 3H₂O. Thermal decomposition results in thermally stable AlF₃ with high specific surface areas between 120 and 60 m²/g depending on treatment temperatures (up to 450 °C). Bulk and surface structures of the resulting amorphous and crystalline materials were characterized by X-ray powder diffraction, infrared and solid state NMR spectroscopy (²⁷Al, MAS), nitrogen physisorption and adsorption of paramagnetic probe molecules (vanadium complexes).