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Aluminium phosphate is a chemical compound. In nature it occurs as the mineral berlinite. [3] Many synthetic forms of aluminium phosphate are known. They have framework structures similar to zeolites and some are used as catalysts, ion-exchangers or molecular sieves. [4] Commercial aluminium phosphate gel is available.
Berlinite (aluminium phosphate, chemical formula AlPO 4 or Al(PO 4)) is a rare high-temperature hydrothermal or metasomatic phosphate mineral. [5] It has the same crystal structure as quartz with a low temperature polytype isostructural with α–quartz and a high temperature polytype isostructural with β–quartz. [3]
Augelite is an aluminium phosphate mineral with formula: Al 2 (P O 4)(OH) 3.The shade varies from colorless to white, yellow or rose. Its crystal system is monoclinic. [4]It was first described by Christian Wilhelm Blomstrand for an occurrence in Västanå iron mine at Scania, Sweden in 1868 and derives its name from the Greek αύγή in reference to its pearly lustre.
Aluminium phosphide is a highly toxic inorganic compound with the chemical formula AlP, used as a wide band gap semiconductor and a fumigant. This colorless solid is generally sold as a grey-green-yellow powder due to the presence of impurities arising from hydrolysis and oxidation .
Wavellite is an aluminium basic phosphate mineral with formula Al 3 (P O 4) 2 (OH, F) 3 ·5H 2 O. Distinct crystals are rare, and it normally occurs as translucent green radial or spherical clusters. Distinct crystals are rare, and it normally occurs as translucent green radial or spherical clusters.
Aluminium dihydrogenphosphate describes inorganic compounds with the formula Al(H 2 PO 4) 3. xH 2 O where x = 0 or 3. They are white solids. Upon heating these materials convert sequentially to a family of related polyphosphate salts including aluminium triphosphate (AlH 2 P 3 O 10. 2H 2 O), aluminium hexametaphosphate (Al 2 P 6 O 18), and aluminium tetrametaphosphate (Al 4 (P 4 O 12) 3).
Sodium aluminium phosphate (SAlP) describes the inorganic compounds consisting of sodium salts of aluminium phosphates. The most common SAlP has the formulas NaH 14 Al 3 (PO 4) 8 ·4H 2 O and Na 3 H 15 Al 2 (PO 4) 8. [1] These materials are prepared by combining alumina, phosphoric acid, and sodium hydroxide. [2]
Variscite is a secondary mineral formed by direct deposition from phosphate-bearing water which has reacted with aluminium-rich rocks in a near-surface environment. [6] It occurs as fine-grained masses in nodules, cavity fillings, and crusts. Variscite often contains white veins of the calcium aluminium phosphate mineral crandallite.