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Lithium imide is an inorganic compound with the chemical formula Li 2 N H. This white solid can be formed by a reaction between lithium amide and lithium hydride. [1] LiNH 2 + LiH → Li 2 NH + H 2. The product is light-sensitive and can undergo disproportionation to lithium amide and characteristically red lithium nitride. 2 Li 2 NH → LiNH 2 ...
Lithium peroxide is the inorganic compound with the formula Li 2 O 2. Lithium peroxide is a white solid, and unlike most other alkali metal peroxides, it is nonhygroscopic. Because of its high oxygen:mass and oxygen:volume ratios, the solid has been used to remove CO 2 from and release O 2 to the atmosphere in spacecraft. [4]
Burning lithium metal produces lithium oxide. Lithium oxide forms along with small amounts of lithium peroxide when lithium metal is burned in the air and combines with oxygen at temperatures above 100 °C: [3] 4Li + O 2 → 2 Li 2 O. Pure Li 2 O can be produced by the thermal decomposition of lithium peroxide, Li 2 O 2, at 450 °C [3] [2] 2 Li ...
Lithium peroxide (Li 2 O 2) in presence of moisture not only reacts with carbon dioxide to form lithium carbonate, but also releases oxygen. [174] [175] The reaction is as follows: 2 Li 2 O 2 + 2 CO 2 → 2 Li 2 CO 3 + O 2. Some of the aforementioned compounds, as well as lithium perchlorate, are used in oxygen candles that supply submarines ...
Heating lithium amide with lithium hydride yields lithium imide and hydrogen gas. This reaction takes place as released ammonia reacts with lithium hydride. [2] Heating magnesium amide to about 400 °C yields magnesium imide with the loss of ammonia. Magnesium imide itself decomposes if heated between 455 and 490 °C. [6]
Matrix isolation techniques can produce pure samples of the compound, but they are only stable at 15-40 K. [3] At higher (but still cryogenic) temperatures, lithium superoxide can be produced by ozonating lithium peroxide (Li 2 O 2) in freon 12: Li 2 O 2 (f 12) + 2 O 3 (g) → 2 LiO 2 (f 12) + 2 O 2 (g) The resulting product is only stable up ...
Lithium amide or lithium azanide is an inorganic compound with the chemical formula LiNH 2. It is a white solid with a tetragonal crystal structure. [1] Lithium amide can be made by treating lithium metal with liquid ammonia: [2] 2 Li + 2 NH 3 → 2 LiNH 2 + H 2. Lithium amide decomposes into ammonia and lithium imide upon heating. [3]
Barium peroxide was once used to produce pure oxygen from air. This process relies on the temperature-dependent chemical equilibrium between barium oxide and peroxide: the reaction of barium oxide with air at 500 °C results in barium peroxide, which upon heating to above 700 °C decomposes back to barium oxide with release pure oxygen. [3]