Preparation method of neutral lithium phosphate

• Main Authors: ZHANG BOWEN, XIAO HAIYAN, LIANG FAYUN, GAN TIANPU, ZOU XU, LIAO CUI, CHEN YU, SHEN LANLAN, LIAO HUIWU, MA MULIN, LI LIANGBIN
• Format: Patent
• Language: Chinese; English
• Published: 08.04.2022
• Subjects: CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS

The invention provides a preparation method of neutral lithium phosphate. The preparation method of the neutral lithium phosphate comprises the following steps: dissolving phosphoric acid in pure water to prepare a solution, slowly adding lithium hydroxide monohydrate, and controlling the pH value of the system to obtain the neutral lithium phosphate. The lithium phosphate prepared by the preparation method of the neutral lithium phosphate provided by the invention is neutral, the mixed solution of the lithium phosphate and the pure water does not change color when meeting phenolphthalein, in addition, the neutral lithium phosphate has the advantages of simple preparation process, strong operability, high product yield, no generation of environment-harmful gases and waste residues, short reaction period, high product purity and the like; the method can be used for industrial production. 本发明提供一种中性磷酸锂的制备方法。所述中性磷酸锂的制备方法包括如下步骤：将磷酸溶于纯水中配成溶液，缓慢加入单水氢氧化锂，通过控制体系pH来获得中性磷酸锂。本发明提供的中性磷酸锂的制备方法制备的磷酸锂为中性，磷酸锂与纯水的混合溶液遇酚酞不变色，此外