摘要 二氧化锰首先被石墨还原为Mn 2 O 3 ,然后还原为Mn 3 O 4 和MnO,然后是Mn 5 C 2 ,然后与剩余的MnO反应生成金属锰。通过添加K 2 CO 3 或Na 2 CO 3 强烈加速该还原过程,并且通过添加CaO、Al 2 O 3 和MgO在较小程度上加速该还原过程。二氧化硅延缓了还原动力学。
Cycle” was studied in order to produce new fuel gas. This process consists of four steps; (i) carbide production from Mn2O3 and solid carbon sources, (ii) fuel gas production by means of hydrolysis of the carbide, (iii) spontaneous oxidation of Mn(OH)2 with air to Mn2O3, and (iv) regeneration of the carbide from Mn2O3 and new carbon sources. In this process, manganese is used as a recyclable medium