A kind of synthetic method of lithium methylate

Abstract

The invention discloses a synthetic method of lithium methoxide. The method comprises the following steps: Step (1): in an inert gas atmosphere, pouring lithium into methanol, stirring and reacting; and Step (2): after the reaction, concentrating and recycling methanol, and transferring a concentrated residual liquid into a helical ribbon agitator and drying to prepare lithium methoxide, wherein pressure in the helical ribbon agitator is 0.01-0.09 MPa, and temperature in the helical ribbon agitator is 70-80 DEG C. The method has advantages of high production safety, simple operation and high production efficiency. High-quality recycling of methanol can be achieved. The prepared lithium methoxide dry product is not easy for caking, and there is few residual solvent.

Description

technical field

[0001] The invention relates to the field of synthesis of chemical raw materials, in particular to a method for synthesizing lithium methoxide. Background technique

[0002] Lithium methoxide is an important chemical product with strong alkalinity and high activity, and can be used as a pharmaceutical intermediate for the production of vitamin A, vitamin B, sulfadiazine, etc.

[0003] Lithium methoxide products mainly have two forms: solid and liquid, and solid lithium methoxide can be prepared from liquid lithium methoxide. The production methods of lithium methoxide mainly include metal lithium method and alkali method. The metal lithium method refers to the direct reaction of metal lithium with methanol, and the obtained liquid lithium methoxide product has a higher purity. The alkaline method refers to dissolving lithium hydroxide in methanol and reacting with methanol to generate lithium methoxide, which is a reversible reaction. The alkalinity of lit...

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