LITHIUM CARBONATE Li2CO3Properties of lithium carbonate: White, calcination decomposes above the melting point. Moderately soluble in cold water, less in hot water. Crystalline hydrates are not. Reacts with acids, metals and non-metals, their oxides.
Obtaining Lithium carbonate Li2CO3: Li2O + CO2 = Li2CO3 (500-600°C). 2LiOH (conc.) + CO2 = Li2CO3↓ + H2O (normal temp.). Li2SO4 (conc.) + Na2CO3 = Li2CO3↓ + Na2SO4 (boiling). Reactions with Lithium carbonate Li2CO3: Li2CO3 = Li2O + CO2 (730-1270°C). Li2CO3 + 2 HCl (diluted)= 2LiCl+CO2↑ +H2O. Li2CO3 + C(coke)= Li2O + 2CO (800°C). Li2CO3 + Mg = 2Li + MgO + CO2 (500°C). Li2CO3 (solid) + H2O + CO2 → 2LiHCO3 (solution) 2Li2CO3 +SiO2 = Li4SiO4 + 2CO2 (800-1000°C). Li2CO3 + 4 B(OH)3 = Li2B4O7 + CO2 + 6H2O (600°C). Li2CO3 + Al2O3 = 2LiAlO2 + CO2 (800-900°C). Li2CO3 + Ca(OH)2 = 2LiOH + CaCO3 (to 600°C). 4Li2CO3 + 2Cr2O3 + 3O2 = 4 Li2CrO4 + 4 CO2 (600-700°C). |
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