1473-63-8Relevant articles and documents
Preparation method of battery electrolyte additive
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Paragraph 0050-0051, (2021/05/08)
The invention provides a preparation method of alkenyl phosphate. The preparation method is characterized by comprising the following steps: under the protection of inert gas, adding alkenyl-containing alcohol, an imidazolium salt catalyst, a first solvent and an acid-binding agent into a reaction container, uniformly stirring, dropwise adding a halogenated phosphate solution dissolved in a second solvent into the reaction container at 0-50 DEG C, reacting for 0.5-2h, after the reaction is finished, returning to the room temperature, filtering, removing solid salt, washing the salt for 3-5 times, collecting a washing solution, adding a saturated sodium bicarbonate solution into the filtrate, stirring for 5-10 minutes, standing for liquid separation, collecting an organic phase, extracting a water phase for 3-5 times, collecting an extracting solution, combining the washing solution, the organic phase and the extracting solution, drying with anhydrous magnesium sulfate, and decolorizing with activated carbon, and rectifying under reduced pressure to obtain the product alkenyl phosphate. The imidazolium salt ionic liquid is used for preparing the alkenyl phosphate, compared with the prior art, the reaction conditions are milder, the reaction time is shorter, and very high yield and purity can be achieved.
