ChemicalBook CAS DataBase List LITHIUM OXALATE

LITHIUM OXALATE synthesis

7synthesis methods

Product Name:LITHIUM OXALATE
CAS Number:553-91-3
Molecular formula:C2H3LiO4
Molecular Weight:97.98

144-62-7 Synthesis

144-62-7
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$5.00/5g

553-91-3
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$14.00/1g

Yield: 264 kg

Reaction Conditions:

with lithium hydroxide in water; pH=7.2 at 70 - 100;Industrial scale;pH-value;Temperature;

Steps:

3 Embodiment 3
A method for preparing lithium of high-purity oxalic acid, the steps are as follows: (1) the 400 kg technical grade lithium hydroxide monohydrate is added to the 2000L in pure water, dissolved in the plastic container, stirring until the solution is clear, technical grade lithium hydroxide solution obtained. Weighing element with lithium molar ratio of 1:2 oxalic acid (quality content ≥ 99.9%) 600 kg, using 750L temperature 100 °C pure water of the enamel container oxalic acid solution dissolved by stirring in, taking 135 kg oxalic acid solution is slowly added in technical grade lithium hydroxide solution, stirring to the complete response, set 30 min, filter mixed to the solution is clear, the lithium hydroxide solution is filtered. (2) from step (1) gas and residual oxalic acid solution 364 kg in the reactor is added, stirring, then slowly adding step (1) the resulting filter good lioh solution, a small amount of white precipitate to the bottom of the generating, the stopping and the filtering good lioh solution, the full reaction of the; then adopts the homogeneous phase synthesis, the remaining filter good lioh solution and residual oxalic acid solution is slowly added in the reactor at the same time, adding process, continuous stirring, temperature control 70 °C the left and the right, after adding lithium hydroxide or oxalic acid pH value of the reaction system is adjusted to 7.2, to continue stirring 30 min. (3) control step (2) the temperature of the solution to lithium oxalate 15 °C/h speed to normal temperature water bath, to be white precipitate lithium oxalate for all sinking into the bottom part, to collect the supernatant return to step (1) as the solvent in place of pure water is recycled in the next reaction. (4) centrifuge lining four fluorine for drying step (3) the resulting lithium oxalate, wet material on 200 °C drying 3h obtain the high-purity oxalic acid lithium finished product 264 kg, product every index in table one.

References:

Hubei New Materials Co.,;Zhao, Zhenghong;Li, Xing;Xu, Tao 2016 Location in patent:Paragraph 0027; 0028; 0029; 0030; 0031; 0032