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|Section2= |Section3= |Section4= |Section7= }} Lithium peroxide is the inorganic compound with the formula Li2O2. It is a white, nonhygroscopic solid. Because of its low density, the solid has been used to remove CO2 from the atmosphere in spacecraft.〔 ==Preparation== It is prepared by the reaction of hydrogen peroxide and lithium hydroxide. This reaction initially produces lithium hydroperoxide:〔E. Dönges "Lithium and Sodium Peroxides" in Handbook of Preparative Inorganic Chemistry, 2nd Ed. Edited by G. Brauer, Academic Press, 1963, NY. Vol. 1. p. 979.〕 :LiOH + H2O2 → LiOOH + 2 H2O This lithium hydroperoxide has also been described as lithium peroxide monoperoxohydrate trihydrate (Li2O2·H2O2·3H2O). Dehydration of this material gives the anhydrous peroxide salt: :2 LiOOH → Li2O2 + H2O2 + 2 H2O Li2O2 decomposes at about 450 °C to give lithium oxide: :2 Li2O2 → 2 Li2O + O2 The structure of solid Li2O2 has been determined by X-ray crystallography and density funcitonal theory. The solid features an eclipsed "ethane-like" Li6O2 subunits with an O-O distance of around 1.5 Å.〔L. G. Cota and P. de la Mora "On the structure of lithium peroxide, Li2O2" Acta Cryst. 2005, vol. B61, pages 133-136. 〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Lithium peroxide」の詳細全文を読む スポンサード リンク
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