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钙锰矿是土壤、沉积物及海洋锰结核中常见的以3×3结构为主的一族大隧道构造氧化锰矿物。隧道中存在水分子和阳离子,形貌以片状、针状或纤维状为主。水钠锰矿→布塞尔矿→钙锰矿的转化是钙锰矿形成的一个重要途径。这种转化在常压条件下受体系温度、pH、共存粘土矿物、转化时间以及前驱物布塞尔矿亚结构特点,如层间交换离子类型、浓度、以水合离子形态或与MnO6八面体空穴上方键合的强弱、结晶度、Mn(III)的含量与迁移特点等因素影响。钙锰矿独特的结构使其所具有的离子吸附、氧化与催化特性及分子级的隧道空间等有望作为特异的分子筛、二次电池正极材料、有机反应催化剂等在环境科学和材料科学等领域具有广阔的应用前景。
Manganese ore is a group of large tunnels that are dominated by 3 × 3 structures in soils, sediments and marine manganese nodules. There are water molecules and cations in the tunnel, the morphology is flaky, acicular or fibrous. The conversion of birnessite → Bussel mine → calcium-manganese ore is an important way for the formation of calcium-manganese ore. This conversion is influenced by system temperature, pH, coexisting clay minerals, conversion time, and the precursor Buserite sub-structure characteristics such as interlayer exchange ion type, concentration, in hydrated ionic form or with MnO6 octahedral void The bonding strength, crystallinity, Mn (III) content and migration characteristics and other factors. The unique structure of calcium-manganese ore is expected to serve as a specific molecular sieve for its ion adsorption, oxidation and catalytic properties and molecular-grade tunneling space. The positive electrode material for secondary batteries and the organic reaction catalyst have broad applications in environmental science and materials science The application prospects.