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本文报道甲基膦酸二甲庚酯萃淋树脂(CL—P350)从盐酸溶液中吸附铼的性能和机理研究。结果表明,分配系数随溶液酸度的增加而升高(在3.0～4.0mol/L HCl时达最大值),平衡服从Langmuir吸附等温式,ReO_4~-以离子缔合机制吸附;测定了吸附过程的热力学函数;还对动态吸附和洗脱进行了探讨。
This paper reports the performance and mechanism of the adsorption of rhenium from hydrochloric acid solution by dimethylheptyl methylphosphonate (CL-P350) leaching resin. The results showed that the partition coefficient increased with the increase of solution acidity (maximum reached at 3.0 ~ 4.0mol / L HCl), the equilibrium obeys Langmuir adsorption isotherm and ReO_4 ~ - is adsorbed by ion association mechanism. The adsorption process Thermodynamic function; dynamic adsorption and elution were also discussed.