纳米氧化锰离子筛提取卤水溶液中锂的实验研究
Experimental study on the extraction of lithium from brine solution by a manganese oxide nanometer ion sieve
查看参考文献24篇
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文摘
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锂是重要的战略资源,而自然界中的锂资源主要储存于如海水、盐湖水和地热水等的卤水中。离子筛吸附剂法是目前最有前途的从含锂液态资源中提取锂的方法。本文通过利用水热合成法,以Mn(NO_3)_2·4H_2O、 Na_2S_2O_8和LiNO_3为反应原料,分三个步骤制备了宽约40~80 nm、长约400~800 nm的纳米棒状尖晶石型MnO_2离子筛。通过吸附实验得到离子筛对配制的稀锂溶液中锂离子最大吸附量达到20 mg/g。同时,通过吸附实验测定并计算了溶液中各碱金属和碱土金属离子的平衡分配系数K_d的次序为Na~+ < K~+ ? Mg~(2+) < Li~+,说明离子筛对锂离子具有较高的选择性,溶液中的其他碱金属离子并没有对Li~+吸附造成干扰。 |
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其他语种文摘
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Lithium is a critical strategic material, and the natural resources of lithium are mainly preserved in brine water including seawater, salt lake water and geothermal water. Recent studies suggest that a promising method of lithium production has been established to develop ion-sieve sorbents that can selectively extract lithium from the Li+-contained brine water. In this paper, Mn(NO_3)_2-4H_2O, Na_2S_2O_8 and LiNO_3 were used as precursors. Spinelcrystal Mn02 ion-sieve nanorods measuring 40~80 nm in diameter and 400-800 nm in length are synthesized via a hydrothermal reaction. The lithium uptake capacity of this synthesized ion sieve reaches to 20 mg/g with the prepared dilute lithium solution in adsorption experiments. The lithium selective adsorption properties were investigated by measuring the distribution coefficients (Kd) of a series of alkaline and alkaline earth metal ions, the Kd values are in the order of Na~+ < K~+ ? Mg~(2+) < Li~+. The results indicate that ion sieve has a high selectivity for lithium ions, and the alkali metal ions in the solution do not interfere with Li~+. |
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来源
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地球化学
,2017,46(4):373-379 【核心库】
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关键词
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氧化锰
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纳米离子筛
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含锂卤水
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锂提取实验
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地址
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1.
中国科学院广州地球化学研究所, 中国科学院边缘海地质重点实验室, 广东, 广州, 510640
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美国科罗拉多州立大学纳米纤维材料实验室, 林斯堡, 80523-1574
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中国科学院广州地球化学研究所, 中国科学院边缘海地质重点实验室;;上海深渊科学工程技术研究中心, 广东, 广州, 510640
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0379-1726 |
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学科
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地质学 |
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基金
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国家自然科学基金
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文献收藏号
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CSCD:6036902
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