ChemicalBook CAS DataBase List Lithium carbonate

Lithium carbonate synthesis

5synthesis methods

Product Name:Lithium carbonate
CAS Number:554-13-2
Molecular formula:CLi2O3
Molecular Weight:73.89

Lithium carbonate is prepared by the precipitation of lithium ion by carbonate ion from an aqueous solution. Still another process, which is carried out on a smaller scale, is the reaction of a solution of lithium hydroxide with carbon dioxide gas. Lithium carbonate precipitates and is recovered from the supernatant solution.

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Yield:-

Reaction Conditions:

with ammonium carbonate;sodium hydroxide in ethanol;water at 20 - 50;Reagent/catalyst;

Steps:

7 Production of lithium carbonate and complex from lithium lactate

General procedure: 50 mL of an aqueous solution of sodium lactate (2 M, 100 mmoles) and sodiumhydroxide (2 M, 100 mmoles) was added to ethanol (50 mL) and stirred at room temperature. Ammonium carbonate (10.57 g, 110 mmoles) was added resulting in a fine, white precipitate. The precipitate was filtered off under vacuum and dried in an oven at 50 °C overnight to yield a mass of dry solid equivalent to a 95.5% recovery of sodium carbonate. Analysis of the solid indicated the presence of 3 % of lactate (assumed to besodium lactate).To the lithium lactate filtrate obtained in Example 4, experiment 2, above, was added ammonium carbonate (3 molar equivalents). A suspension formed, the mixturewas stirred for 40 minutes at ambient temperature and filtered. The solid obtained was washed with water (50 mL) and dried at 50 °C for 18 hours to afford 1 .98g of solid.

References:

WO2015/155535,2015,A1 Location in patent:Page/Page column 18