Kondaurov Ruslan, Melnikov Yevgeniy, Agibayeva Laura
Department of Biochemical Engineering, International Engineering and Technological University, Al-Farabi ave. 93a, Almaty 050060, Kazakhstan.
Faculty of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, Al-Farabi ave. 71, Almaty 050040, Kazakhstan.
Polymers (Basel). 2023 Feb 8;15(4):846. doi: 10.3390/polym15040846.
The aim of the work is to study the effectiveness of a molecular imprinting technique application for the creation of highly selective macromolecular sorbents for selective sorption of light and heavy rare-earth metals (for example, samarium and gadolinium, respectively) with subsequent separation from each other. These sorbents seem to be promising due to the fact that only the target rare-earth metal will be sorbed owing to the fact that complementary cavities are formed during the synthesis of molecularly imprinted polymers. In other words, the advantage of the proposed macromolecules is the absence of accompanying sorption of metals with close chemical properties. Two types of molecularly imprinted polymers (MIP) were synthetized based on methacrylic acid (MAA) and 4-vinylpyridine (4VP) functional monomers. The sorption properties (extraction degree, exchange capacity) of the MIPs were studied. The impact of template removal cycle count (from 20 to 35) on the sorption effectivity was studied. Laboratory experiments on selective sorption and separation of samarium and gadolinium from a model solution were carried out.
这项工作的目的是研究分子印迹技术在制备高选择性大分子吸附剂方面的有效性，该吸附剂用于选择性吸附轻、重稀土金属（例如分别为钐和钆），随后将它们彼此分离。这些吸附剂似乎很有前景，因为在分子印迹聚合物的合成过程中形成了互补腔，所以只有目标稀土金属会被吸附。换句话说，所提出的大分子的优点是不存在具有相近化学性质的金属的伴随吸附。基于甲基丙烯酸（MAA）和4-乙烯基吡啶（4VP）功能单体合成了两种类型的分子印迹聚合物（MIP）。研究了MIP的吸附性能（萃取程度、交换容量）。研究了模板去除循环次数（从20到35）对吸附效果的影响。进行了从模型溶液中选择性吸附和分离钐和钆的实验室实验。
