| 1nm锰矿相结构稳定性的研究 |
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| 引用本文： | 钱江初.1nm锰矿相结构稳定性的研究[J].海洋学报,1998,20(3):56-63. |
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| 作者姓名： | 钱江初 |
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| 作者单位： | 国家海洋局第二海洋研究所, 杭州 310012 |
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| 摘 要： | 对在潮湿状态和经室温干燥后的人工合成Slnm锰矿相进行X衍射测定结果显示:1nm锰矿相与0.7nm锰矿相之间存在某种相变关系,那些结构不稳定的S1nm锰矿相,由于干燥等原因而失去层间-OH-H2O层,而使原先的1nm相“崩塌”成为0.7nm锰矿相.1nm锰矿相结构稳定性主要是由被结合进层间的Cu、Co、Ni等二价金属阳离子的特性与数量所决定的,其所含的金属阳离子的数量与其锰矿相的结构稳定性呈正相关,而不同的金属阳离子在稳定1nm锰矿相的结构的能力的大小可排列为:Ni>Cu>Co>Zn>Ca≥Mg>Na.
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| 关 键 词： | 多金属结核 S1nm锰矿相 相变 结构稳定性 |
| 收稿时间： | 1996/6/24 0:00:00 |
| 修稿时间： | 1997/4/23 0:00:00 |
Study on structural stability of 1 nm manganates |
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| Qian Jiangchu.Study on structural stability of 1 nm manganates[J].Acta Oceanologica Sinica (in Chinese),1998,20(3):56-63. |
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| Authors: | Qian Jiangchu |
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| Institution: | Swxons Institute of Oceanography, State Oceanic Administration, Hangzhou 310012 |
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| Abstract: | In order to study the relationship between 1 nm manganate and 0. 7 nm manganate , a series of S1nmM2 manganates are made after the synthetic 1nm manganate (Slnm Na ) substituted with the different kinds of divalent cations. The X-ray deffraction analysis of SlnmM2 manganates when they are wet and after 24 h room temperature dry shows their quite different characteristics of the d-spacing and indicates that there are phase changes between 1 nm manganate and 0. 7 nm manganate. Those 1 nm manganates with unstable layer structure will collapse to 0. 7 nm manganate by lossing one inter layer OH-H2O after RTD , while those with stable layer structure will still remain their lnm d-spacing. This fact remainds us that the samples of man- ganese nodules must be kept in wet when we do the mineral analysis to avoid the uncorrect results. The struc- tural stability of lnm manganate is mainly controlled by the interlayer divalent cations such as Cu ,Co and Ni. There is positive relationship between the interlayer contents of the divalent cations and their structural sta- bility , while the capacity of different cations in stabilizing the layer structure of 1nm manganate is as follows , Ni>Cu>Co>Zn>Ca>Mg>Na. |
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| Keywords: | Polymetallic Nodules S1nm Manganate phase Transformation strucfural stability |
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