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首页> 外文期刊>RSC Advances >A novel sorbent for lanthanide adsorption based on tetraoctyldiglycolamide, modified carbon inverse opals
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A novel sorbent for lanthanide adsorption based on tetraoctyldiglycolamide, modified carbon inverse opals

机译：一种基于四辛基二甘醇酰胺，改性碳反蛋白石的镧系元素吸附吸附剂

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摘要

Carbon inverse opals (C-IOP) were noncovalently modified with tetraoctyldiglycolamide (TODGA). The effect of HNO3 concentration in the aqueous phase and that of the TODGA concentration in the sorbent phase on the adsorption of microquantities of Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu nitrates from HNO3 solutions by CIOP modified with TODGA was considered. The stoichiometry of the sorbed complexes has been determined by the slope analysis method. The efficiency of lanthanides(III) adsorption from moderate-concentration HNO3 solutions increases with increasing atomic number of the element. The process of lanthanides(III) adsorption is exothermic, spontaneous and followed a pseudo-second-order kinetic model.
机译：碳反蛋白石（C-10P）用四辛基二甘醇酰胺（TODGA）非共价修饰。水相中HNO3浓度和吸附剂相中TODGA浓度对Y，La，Ce，Pr，Nd，Sm，Eu，Gd，Tb，Dy，Ho，Er，Tm的微量吸附的影响考虑了用TODGA改性的CIOP制备的HNO3溶液中的Yb和Lu硝酸盐。吸附的配合物的化学计量已经通过斜率分析法确定。从中等浓度的HNO3溶液中吸附镧系元素（III）的效率随元素原子数的增加而增加。镧系元素（III）的吸附过程是放热的，自发的，并遵循伪二级动力学模型。

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