Sodium silicide

Sodium silicide (NaSi, Na2Si, Na4Si4) is a binary inorganic compound consisting of sodium and silicon. It is a solid black or grey crystalline material.[1]

Sodium silicide reacts readily with water yielding gaseous hydrogen and aqueous sodium silicate in an exothermic reaction (~175 kJ/mol):[2]

2 NaSi + 5 H2O → 5 H2 + Na2Si2O5

This is used in hydrogen technologies to generate hydrogen as a fuel.

See also

References

  1. ↑ Material Safety Data Sheet, SiGNa Chemistry, Inc.
  2. ↑ Hydrogen Production from Sodium Silicide Powder; Prospects for On-Board Generation, 14 July 2006