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Aluminium oxide (or aluminium(III) oxide) is a chemical compound of aluminium and oxygen with the chemical formula Al 2 O 3. It is the most commonly occurring of several aluminium oxides, and specifically identified as aluminium oxide. It is commonly called alumina and may also be called aloxide, aloxite, or alundum in various forms and ...
Solid properties Std enthalpy change of formation, Δ f H o solid-1675.7 kJ/mol Standard molar entropy, S o solid: 50.92 J/(mol K) Heat capacity, c p: 89.7248 J/(mol K) Liquid properties Std enthalpy change of formation, Δ f H o liquid-1620.57 kJ/mol Standard molar entropy, S o liquid: 67.24 J/(mol K) Heat capacity, c p: 192.5 J/(mol K) Gas ...
Aluminium(I) oxide (Al 2 O) Aluminium(II) oxide ( AlO ) (aluminium monoxide) Aluminium(III) oxide (aluminium oxide), ( Al 2 O 3 ), the most common form of aluminium oxide, occurring on the surface of aluminium and also in crystalline form as corundum , sapphire , and ruby .
Properties, of the final material, defined as the set of properties of the solid Aluminium oxide and specific properties of nanostructures. Properties of nanoscale colloidal alumina particles: Small diameter of the particles/fibers (2–10 nm) High specific surface area (>100 m2/g)
Activated alumina is manufactured from aluminium hydroxide by dehydroxylating it in a way that produces a highly porous material; this material can have a surface area significantly over 200 m 2 /g. The compound is used as a desiccant (to keep things dry by adsorbing water from the air) and as a filter of fluoride , arsenic and selenium in ...
Aluminium oxide is an amphoteric oxide of aluminium with the chemical formula Al 2 O 3. It is also commonly referred to as alumina or aloxite [1] in the mining, ceramic and materials science communities. It is produced by the Bayer process from bauxite.
It is commonly called white fused aluminum oxide and may also be called white corundum. The manufacture of white fused alumina is resulting in γ–Al 2 O 3 in industrial alumina powder being completely transformed to α–Al 2 O 3. White fused alumina is white particles or a white powder, and its microstructure is transparent crystal.
Aluminates are often formulated as a combination of basic oxide and aluminium oxide, for example the formula of anhydrous sodium aluminate NaAlO 2 would be shown as Na 2 O·Al 2 O 3. A number of aluminate oxyanions are known: The simplest is the approximately tetrahedral AlO 5− 4 found in the compound Na 5 AlO 4, [2] framework AlO −
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