Adsorption and separation of palladium and platinum with microcapsules containing tri-n-octylamine hydrochloride
Adsorption and separation of palladium and platinum with microcapsules containing tri-n-octylamine hydrochloride
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DOI：
10.1016/j.jwpe.2014.04.002
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发表时间：
2014-04
影响因子：
7
通讯作者：
Kazuo Kondo;Mao Sawada;M. Matsumoto
中科院分区：
文献类型：
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作者：
Kazuo Kondo;Mao Sawada;M. Matsumoto
采用含有金属萃取剂盐酸三正辛胺的微胶囊对酸性水溶液中的钯和铂进行了吸附和分离。采用二乙烯基苯原位聚合的方法包封萃取剂，制备了平均直径为208 μm的球形微胶囊。利用Langmuir吸附等温线模型对实验结果进行了解释。利用浅床反应器测量了金属的吸附速率，表明金属-氯配合物通过微胶囊孔的扩散有助于金属的整体吸附过程。用填充微胶囊的玻璃柱分离金属。当含两种金属的进料液流速为3 mL/min时，分离效率提高。在适当的实验条件下，在吸附步骤中几乎可以实现金属的分离。
The adsorption and separation of palladium and platinum from an acidic aqueous solution were conducted using microcapsules containing a metal extractant, tri-n-octylamine hydrochloride. The spherical microcapsules with an average diameter of 208 μm were prepared through encapsulation of the extractant byin situradical polymerization of divinylbenzene. Results for the adsorption equilibrium of each metal were applied to the Langmuir adsorption isotherm model to explain the experimental results. The adsorption rate of the metals was also measured using a shallow bed reactor, and indicated that diffusion of the metal-chloro complexes through the pores in the microcapsules contributed to the overall adsorption process of the metals. Separation of the metals was conducted using a glass column packed with the microcapsules. The separation efficiency increased when the flow rate of a feed solution containing both metals was 3 mL/min. Separation of the metals was almost achieved under appropriate experimental conditions during the adsorption step.