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In chemistry aluminate is a compound containing an oxyanion of aluminium, such as sodium aluminate. In the naming of inorganic compounds it is a suffix that indicates a polyatomic anion with a central aluminum atom.〔(Nomenclature of Inorganic Chemistry IUPAC Recommendations 2005 ) - Full text (PDF)〕 ==Aluminate oxyanions== Aluminum oxide is amphoteric: it dissolves in both bases and acids. When dissolved in bases it forms hydroxoaluminate ions in the same way as aluminium hydroxide or aluminium salts. The hydroxyaluminate or hydrated aluminate can be precipitated and then calcined to produce anhydrous aluminates. Aluminates are often formulated as a combination of basic oxide and aluminium oxide, for example the formula of anhydrous sodium aluminate NaAlO2 would be shown as Na2O.Al2O3. A number of aluminate oxyanions are known: * The simplest is the approximately tetrahedral AlO45− found in the compound Na5AlO4, * framework AlO2− ions in anhydrous sodium aluminate NaAlO2 and monocalcium aluminate, CaAl2O4 made up of corner sharing tetrahedra. * A ring anion, the cyclic Al6O1818− anion, found in tricalcium aluminate, Ca3Al2O6, which can be considered to consist of 6 corner sharing tetrahedra. * A number of infinite chain anions in the compounds Na7Al3O8 which contains rings linked to form chains, Na7Al13O10 and Na17Al5O16 which contain discrete chain anions. 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「Aluminate」の詳細全文を読む スポンサード リンク
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