Lithium orthosilicate

Lithium orthosilicate is a compound with the chemical formula Li₄SiO₄. It is a white ceramic compound, which melts congruently at a temperature of 1,258 °C (2,296 °F).^[1]

Lithium orthosilicate

Identifiers
CAS Number	13453-84-4
3D model (JSmol)	Interactive image
ChemSpider	8096016
ECHA InfoCard	100.033.290
EC Number	264-592-4
PubChem CID	9920381
CompTox Dashboard (EPA)	DTXSID401014490
InChI InChI=1S/4Li.O4Si/c;;;;1-5(2,3)4/q4*+1;-4 Key: YTZVWGRNMGHDJE-UHFFFAOYSA-N
SMILES [Li+].[Li+].[Li+].[Li+].[O-][Si]([O-])([O-])[O-]
Properties
Chemical formula	Li4O4Si
Molar mass	119.84 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Lithium orthosilicate is of primary interest towards carbon dioxide capture, as this compound reacts with CO₂ at elevated temperatures to form lithium carbonate, and has been implemented in limited scale in such applications.^[2] Further applications of Li₄SiO₄ include solid electrolytes for lithium-ion batteries, specifically solid state batteries,^[3] and tritium breeding materials, as a component of the breeding blanket for planned fusion energy systems such as ITER.^[1][4]

See also

• Lithium metasilicate — other lithium silicate compound
• Carbon dioxide scrubber