摘要
本文报导甲基磷酸二甲庚酯萃淋树脂（CL－P350）从硫酸溶液中吸附铼的性能和机理研究．结果表明铼分配系数（DRe）随硫酸浓度的增加而升高（并在3．0～4.0mol／LH2SO4时达最大值），吸附平衡服从Langmuir等温式.吸附物分子中P350与ReO4-的摩尔比为3：1，ReO4-以离子缔合机制吸附测定了吸附过程的热力学函数。
This paper reports that the adsorption property and mechanism of rhenium (VⅡ) from the aqueous sulfuric acid solution by di(1- methyl heptyl) methyl phosphanate levextrel resin. Experimental results show that the distribution coefficient (DRe) of rhenium increases with the increase of concentration of sulfuric acid and reaches a maximun in the range of 3.0-4.0 mol/L H2SO4, the adsorption can be described by langmuirs equation of the adsorbate of the equilibrium shift method and equlimolax series method.the composition of the adsorbate was found to be [H3O+. 3P350] ReO4- Infrared spectra confirmed that the adsorption of ReO4- by C1-P350 resin might be by a mechanism of ion association.The thermodynamic parameters in the adsorption process of ReO4- were calculated to be △H=-30 .0kJ/mol,l, △G=-20.2kJ /mol.△S=-32.2J/(mol·K) respectively, and the adsorption kinetic of ReO4- was also investigated.
出处
《化工冶金》
CSCD
北大核心
1994年第2期146-151,共6页
关键词
铼
吸附
萃淋树脂
性能
机理
Rhenium, Adsorption, Levextrel resin, Di(1-methyl heptyl) methyl phosphanate
