The air oxidation of Mn(OH) 2 in alkaline medium was investigated,and the characterizations of oxidation products were studied by the XRD.The results showed that the oxidation product was Mn 3O 4.The reactions were fu...The air oxidation of Mn(OH) 2 in alkaline medium was investigated,and the characterizations of oxidation products were studied by the XRD.The results showed that the oxidation product was Mn 3O 4.The reactions were further analysised by the standard electrode potential pH diagram.展开更多
为了确定高效、低成本制取四氧化三锰的工艺条件,以硫酸锰为原料,采用二步法进行了制备工艺条件研究。结果表明,在氨水的滴加速度为0.5 m L/min,沉锰溶液的p H稳定在9.9的情况下,Mn2+的沉淀率达99.90%;Mn(OH)2悬浊液的氧化温度为70℃,...为了确定高效、低成本制取四氧化三锰的工艺条件,以硫酸锰为原料,采用二步法进行了制备工艺条件研究。结果表明,在氨水的滴加速度为0.5 m L/min,沉锰溶液的p H稳定在9.9的情况下,Mn2+的沉淀率达99.90%;Mn(OH)2悬浊液的氧化温度为70℃,氧化时间为7 h情况下制得的产品Mn3O4含量为99.74%,比表面积为28.3 m2/g。产品各项性能指标均达到四氧化三锰优等品标准。展开更多
文摘The air oxidation of Mn(OH) 2 in alkaline medium was investigated,and the characterizations of oxidation products were studied by the XRD.The results showed that the oxidation product was Mn 3O 4.The reactions were further analysised by the standard electrode potential pH diagram.
