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|Section2= |Section3= |Section4= }} Beryllium carbide, or Be2C, is a metal carbide. Similar to diamond, it is a very hard compound.〔(Beryllium Carbide Info ) American Elements Retrieved June 11, 2009.〕 ==Preparation== Beryllium carbide is prepared by heating the elements beryllium and carbon at elevated temperatures (above 900°C). It also may be prepared by reduction of beryllium oxide with carbon at a temperature above 1,500°C: :2BeO + 3C → Be2C + 2CO Beryllium carbide decomposes very slowly in water: :Be2C + 2H2O → 2BeO + CH4 The rate of decomposition is faster in mineral acids with evolution of methane. :Be2C + 4 H+ → 2 Be2+ + CH4 However, in hot concentrated alkali the reaction is very rapid, forming alkali metal beryllates and methane: :Be2C + 4OH− → 2 BeO22− + CH4 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「beryllium carbide」の詳細全文を読む スポンサード リンク
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