Behavior of Silica-Supported Manganese Oxides in Hydrometallurgical Separations
Behavior of Silica-Supported Manganese Oxides in Hydrometallurgical Separations
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DOI：
10.1080/01496390903183329
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发表时间：
2009-09
影响因子：
2.8
通讯作者：
J. Pakarinen;M. Laatikainen;Katri Sirola;E. Paatero;R. Koivula;R. Harjula
中科院分区：
文献类型：
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作者：
J. Pakarinen;M. Laatikainen;Katri Sirola;E. Paatero;R. Koivula;R. Harjula
摘要研究了纳米多孔锰氧化物从湿法冶金溶液中吸附金属的性能。采用水热法合成了层状结构的OL-1和隧道状的OMS-1，并将其负载在二氧化硅上。通过平衡、间歇动力学和固定床测量研究了金属和酸的竞争吸收。实验数据与动力学模型相关联，该模型也解释了骨架锰的溶解。结果表明，二氧化硅负载的OMS材料可用于铜、镍、镉的分离。用所提出的模型和由无载体氧化物数据估算的参数，可以很好地解释复合材料的行为。
Abstract The properties of nanoporous manganese oxides for metal uptake from hydrometallurgical solutions were studied. Layer-structured OL-1 and tunnel-structured OMS-1 were synthesized by means of a hydrothermal route and then supported on silica. Competitive uptake of metals and acid was studied using equilibrium, batch kinetic, and fixed-bed measurements. The experimental data were correlated with a dynamic model, which also accounts for the dissolution of the framework manganese. Results show that silica–supported OMS materials can be utilized to separate copper from nickel and cadmium. Behavior of the composites can be explained reasonably well with the presented model and the parameters estimated from the data of the unsupported oxides.