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|Section2= |Section6= |Section7= }} Aluminium phosphate (AlPO4) is a chemical compound. The anhydrous form is found in nature as the mineral berlinite. Many synthetic forms〔Chemistry of Zeolites and Related Porous Materials: Synthesis and Structure Ruren Xu, Wenqin Pang, Jihong Yu, Qisheng Huo, Jiesheng Chen, John Wiley & Sons, 2007, ISBN 978-0-470-82233-3〕 of anhydrous aluminium phosphate are known. They have framework structures similar to zeolites and some are used as catalysts or molecular sieves. The dihydrate, AlPO4·2H2O is found as the minerals variscite and meta-variscite.〔Roncal-Herrero, T., Rodriguez-Blanco, J.D., Benning, L.G., Oelkers, E.H. (2009) Precipitation of Iron and Aluminum Phosphates Directly from Aqueous Solution as a Function of Temperature from 50 to 200°C. Crystal Growth & Design, 9, 5197-5205. doi: 10.1021/cg900654m. 〕〔Corbridge DEC 2013, ''Phosphorus: Chemistry, Biochemistry and Technology,'' 6th ed., CRC Press, Boca Raton, Florida, ISBN 978-1-4398-4088-7〕 A synthetic hydrated form, AlPO4·1.5H2O is also known. Commercially, an aluminium phosphate gel is available. ==Aluminium phosphate (berlinite)== AlPO4 is isoelectronic with Si2O4, silicon dioxide. Berlinite looks like quartz and has a structure that is similar to quartz with silicon replaced by Al and P. The AlO4 and PO4 tetrahedra alternate. Like quartz, AlPO4 exhibits chirality and piezoelectric properties.〔Crystal growth of an α-quartz like piezoelectric material, berlinite, Motchany A. I.,Chvanski P. P., Annales de Chimie Science des Materiaux properties, 2001, 26, 199〕 Crystalline AlPO4 (berlinite) when heated, converts to tridymite and cristobalite forms, and this mirrors the behaviour of silicon dioxide. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Aluminium phosphate」の詳細全文を読む スポンサード リンク
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