论文标题
在碱性碱性培养基中氧化Mn（II）阳离子期间形成纯Birnessite的条件
Conditions for the formation of pure birnessite during the oxidation of Mn(II) cations in aqueous alkaline medium
论文作者
论文摘要
通过混合MNO4-，MN2+和OH-溶液，通过氧化还原反应合成了Birnessite。选择了0.33的Mn（VII）：Mn（II）比率，并使用三种方法，包括在三种试剂中的两种剧烈搅拌下快速混合，然后在第三个试剂中逐滴添加。获得的固体通过XRD，FTIR和XPS光谱镜表征。通过ICP和CEC测量确定其平均氧化态，同时通过XPS研究其表面特性。这项研究提供了人们对溶解氧在形成birnessite和hausmannite形成中的重要性的越来越多的理解，并展示了获得纯叶尼特石的方法。反离子IE的作用。还检查了Na+或K+。
Birnessite was synthetized through redox reaction by mixing MnO4-, Mn2+ and OH- solutions. The Mn(VII): Mn(II) ratio of 0.33 was chosen and three methods were used consisting in a quick mixing under vigorous stirring of two of the three reagents and then on the dropwise addition of the third one. The obtained solids were characterized by XRD, FTIR and XPS spectroscopies. Their average oxidation states were determined from ICP and CEC measurements while their surface properties were investigated by XPS. This study provides an increased understanding of the importance of dissolved oxygen in the formation of birnessite and hausmannite and shows the ways to obtain pure birnessite. The role of counter-ion ie. Na+ or K+ was also examined.
