Solid Oxide Membrane (SOM) technology for environmentally sound production of tantalum metal and alloys from their oxide sources
Solid Oxide Membrane (SOM) technology for environmentally sound production of tantalum metal and alloys from their oxide sources
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DOI：
10.1111/j.1600-0692.2005.00749.x
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发表时间：
2005-10
期刊：
影响因子：
--
通讯作者：
A. Krishnan;Xionggang Lu;U. Pal
中科院分区：
文献类型：
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作者：
A. Krishnan;Xionggang Lu;U. Pal
固体氧化物氧离子传导膜（SOM）技术为环境友好和高能效的高能量含量金属提取提供了巨大的潜力。这项工作是为了证明SOM技术直接从钽氧化物和精矿生产钽金属和钽铌合金的技术可行性。施加电势以离解氧化钽源，在阴极还原Ta金属，泵送氧离子通过膜（SOM），并在阳极氧化它们。该方法可用于有效地生产钽金属，而无需对原材料进行昂贵的预处理和产生有害的副产物。本文的工作表明，SOM工艺可以生产高纯金属钽。文中还讨论了电池的电化学行为和提高膜稳定性的方法。
The Solid-Oxide-Oxygen-Ion conducting membrane (SOM) technology offers great potential for environment friendly and energy-efficient extraction of high-energy-content metals. This work was performed to demonstrate the technical viability of the SOM technology to produce tantalum metal and tantalum-niobium alloy directly from tantalum oxide and ore concentrates. An electric potential is applied to dissociate the tantalum oxide source, reduce the Ta metal at the cathode, pump the oxygen ions through the membrane (SOM), and oxidize them at the anode. The process can be used to efficiently produce tantalum metal without the expensive pre-processing of raw materials and generation of harmful byproducts. The work reported in this paper demonstrates that the SOM process can produce high-purity tantalum metal. The electrochemical behavior of the cell and the method to increase membrane stability are also discussed.