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Aluminium oxide (or aluminium (III) oxide) is a chemical compound of aluminium and oxygen with the chemical formula Al2O3. It is the most commonly occurring of several aluminium oxides, and specifically identified as aluminium oxide.
Aluminium oxides or aluminum oxides are a group of inorganic compounds with formulas including aluminium (Al) and oxygen (O). Aluminium (I) oxide (Al2O) Aluminium (II) oxide (AlO) (aluminium monoxide) Aluminium (III) oxide (aluminium oxide), (Al2O3), the most common form of aluminium oxide, occurring on the surface of aluminium and also in ...
Corundum. Corundum is a crystalline form of aluminium oxide (Al2O3) typically containing traces of iron, titanium, vanadium, and chromium. [3][4] It is a rock -forming mineral. It is a naturally transparent material, but can have different colors depending on the presence of transition metal impurities in its crystalline structure. [7]
S o liquid. 67.24 J/ (mol K) Heat capacity, cp. 192.5 J/ (mol K) Gas properties. Std enthalpy change. of formation, Δ fH o gas.
Aluminium (I) oxide is formed by heating Al and Al 2 O 3 in a vacuum while in the presence of SiO 2 and C, and only by condensing the products. [ 2] Information is not commonly available on this compound; it is unstable, has complex high-temperature spectra, and is difficult to detect and identify. In reduction, Al 2 O is a major component of ...
Bauxite (/ ˈbɔːksaɪt /) is a sedimentary rock with a relatively high aluminium content. It is the world's main source of aluminium and gallium. Bauxite consists mostly of the aluminium minerals gibbsite (Al (OH)3), boehmite (γ-AlO (OH)) and diaspore (α-AlO (OH)), mixed with the two iron oxides goethite (FeO (OH)) and haematite (Fe2O3 ...
The Hall–Héroult process is the major industrial process for smelting aluminium. It involves dissolving aluminium oxide (alumina) (obtained most often from bauxite, aluminium 's chief ore, through the Bayer process) in molten cryolite and electrolyzing the molten salt bath, typically in a purpose-built cell. The Hall–Héroult process ...
Bayer process. The Bayer process is the principal industrial means of refining bauxite to produce alumina (aluminium oxide) and was developed by Carl Josef Bayer. Bauxite, the most important ore of aluminium, contains only 30–60% aluminium oxide (Al 2 O 3), the rest being a mixture of silica, various iron oxides, and titanium dioxide. [1]
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