1,3-ジベリラプロパジエン 化学特性,用途語,生産方法
化学的特性
Red cubic crystal; hard and refractory; density 1.90 g/cm3; decomposes when heated above 2,100°C; reacts with water.
物理的性質
Brick-red or yellowish-red
octahedra. Uses: Nuclear reactor
cores.
使用
Beryllium carbide (Be2C) is used for the cores in nuclear reactors.
製造方法
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 → (1500℃)→ Be
2C + 2CO
Beryllium carbide decomposes very slowly in water:
Be
2C + 2H
2O → 2BeO + CH
4
The rate of decomposition is faster in mineral acids with evolution of methane. However, in hot concentrated alkalies the reaction is very rapid, forming alkali metal beryllate and methane:
Be
2C + 4NaOH → 2Na
2BeO
2 + CH
4
1,3-ジベリラプロパジエン 上流と下流の製品情報
原材料
準備製品