论文标题
铵与Birnessite的相互作用：碱性培养基中化学和结构转化的证据
Interaction of ammonium with birnessite: Evidence of a chemical and structural transformation in alkaline aqueous medium
论文作者
论文摘要
研究了与碱性碱性培养基中Na-birnessite的铵阳离子相互作用。解决方案和固体分析提供了证据表明，birnessite不仅充当阳离子交换器对NH4+。 XPS进行的表面分析表明，N1S光谱的特征是存在两个不同的环境：一个可分配给层间NH4+，第二个可分配到化学吸附的N种。在氮质量平衡不足的Birnessite上观察到结构和化学转化。对NH4+，Na+，MN2+，NO3和NO2和固体变化的监测（Mn的平均氧化态，阳离子交换能力，固体氮含量和由XRD和FTIR鉴定的对称性进化）明确表明NH4+对Birnessite的化学反应。
The ammonium cation interaction with Na-birnessite in aqueous alkaline medium was studied. Solution and solid analysis give evidence that birnessite is not only acting as a cationic exchanger toward NH4+. The surface analysis performed by XPS showed that N1s spectra are characterized by the existence of two different environments: one assignable to an interlayer NH4+ and the second to a chemisorbed N-species. Structural and chemical transformations were observed on birnessite with nitrogen mass balance deficit. The monitoring of NH4 +, Na+, Mn2+, NO3- and NO2- and solid changes (average oxidation state of Mn, cation exchange capacity, solid nitrogen content and symmetry evolution identified by XRD and FTIR) indicate unambiguously that NH4+ reacts chemically with the birnessite.
