关键词: 氨基钠, 金属钠, 液氨

Abstract: Sodium amide has been applied extensively in chemical industry and synthesis of medicaments.The synthesis technology of sodium amide from sodium and liquid ammonia in the presence of hydrogen was studied.The influences of reac- tion temperature，pressure，and mixture ratio of raw materials etc.on the product quality were investigated.Sodium was dis- solved into a certain amount of liquid ammonia，and the mixture was moved into a high-pressure reaction vessel.Then hydro- gen was filled into the vessel to replace air，and then it was heated up to 50 ℃ with stirring for 1 h.The sodium amide product with mass fraction of 92% could be gained.The synthesis technology will have an important application prospect as it is sim- ple，cycle-short，catalyst-free，purity-high，and color-good.

Key words: sodium amide, sodium, liquid ammonia