Preparation method of potassium hydride

• Main Authors: LIU BINGLONG, ZHOU NINGNING, LIU LINGLI, DONG RANLIN, LIU CONGHUI, LIANG SHENG, HU LEI, PENG CHANGMAO, ZHANG YIWEI
• Format: Patent
• Language: Chinese; English
• Published: 14.03.2023
• Subjects: CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS

The invention relates to the technical field of synthesis of inorganic compounds, in particular to a preparation method of potassium hydride. According to the preparation of potassium hydride, lithium hydride and potassium bicarbonate are used as raw materials, and under the protection of inert atmosphere, the lithium hydride and the potassium bicarbonate are mixed according to the molar ratio of 1: (0.1-10) and placed in a reactor. Heating the mixture to 50-800 DEG C at the heating rate of 0.1-50 DEG C/min, and reacting for 0.1-24 hours; after the reaction is finished and cooling is conducted, gas in the reactor is collected firstly, then a solid product deposited at the upper end of the reactor is taken out under inert atmosphere protection, and potassium hydride is obtained. According to the method, the lithium hydride and the potassium bicarbonate are utilized to generate the potassium hydride in situ under the heating condition, so that the one-step in-situ preparation of the potassium hydride is realize