Storing Carbon at high temperatures
Metal carbonates
All metal carbonates decompose at high temperatures into metal oxides and Carbon dioxide (CO2) gas. The release of CO2 contributes to the greenhouse effect, raising temperatures and forcing more CO2 to be released. So it's important to know at what temperature metal carbonates decompose.
| Carbonates | Decomposition °C
|
| Barium carbonate | 1360
|
| Lithium carbonate | 1310
|
| Strontium carbonate | 1110
|
| Calcium carbonate | 899
|
| Potassium carbonate | >891
|
| Sodium carbonate | >851
|
| Rubidium carbonate | 740
|
| Cesium carbonate | 610
|
| Magnesium carbonate | 350
|
| Lead carbonate | 340
|
| Cadmium carbonate | 310
|
| Silver carbonate | 218
|
| Manganese carbonate | >200
|
| Zinc carbonate | 140
|
Metal carbides
Metal carbides are strong, stable compounds at high temperatures. Diamonds and metal carbides offer the best form in which to store Carbon a high temperatures, but are difficult and expensive to make.
| Carbides | Melting °C | Boiling °C
|
| Diamond | >3550
|
| Titanium carbide | 3140 | 4820
|
| Tungsten carbide | 2870 | 6000
|
| Tungsten dicarbide | 2860 | 6000
|
| Boron carbide | 2350 | >3500
|
| Calcium carbide | 2300
|
| Iron carbide | 1837
|