Berylliumacetylid Chemische Eigenschaften,Einsatz,Produktion Methoden
Chemische Eigenschaften
Red cubic crystal; hard and refractory; density 1.90 g/cm3; decomposes when heated above 2,100°C; reacts with water.
Physikalische Eigenschaften
Brick-red or yellowish-red
octahedra. Uses: Nuclear reactor
cores.
Verwenden
Beryllium carbide (Be2C) is used for the cores in nuclear reactors.
synthetische
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
Berylliumacetylid Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
