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|Section2= |Section3= |Section4= |Section7= |Section8= }} Nickel(II) oxide is the chemical compound with the formula . It is notable as being the only well-characterized oxide of nickel (although nickel(III) oxide, and have been claimed). The mineralogical form of , bunsenite, is very rare. It is classified as a basic metal oxide. Several million kilograms are produced in varying quality annually, mainly as an intermediate in the production of nickel alloys.〔K. Lascelles, L. G. Morgan, D. Nicholls, D. Beyersmann “Nickel Compounds” in Ullmann's Encyclopedia of Industrial Chemistry 2005 Wiley-VCH, Weinheim, 2005.〕 ==Production== can be prepared by multiple methods. Upon heating above 400 °C, nickel powder reacts with oxygen to give . In some commercial processes, green nickel oxide is made by heating a mixture of nickel powder and water at 1000 °C, the rate for this reaction can be increased by the addition of .〔"Handbook of Inorganic Chemicals", Pradniak, Pradyot; McGraw-Hill Publications,2002〕 The simplest and most successful method of preparation is through pyrolysis of a nickel(II) compounds such as the hydroxide, nitrate, and carbonate, which yield a light green powder.〔 Synthesis from the elements by heating the metal in oxygen can yield grey to black powders which indicates nonstoichiometry.〔 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「Nickel(II) oxide」の詳細全文を読む スポンサード リンク
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