Abstract To directly separate actinides from high level liquid waste (HLLW), a novel molecule, i. e. isoPentyl-BTBP (6,6′-bis(5,6-bis(4-methylpentyl)-1,2,4-triazin-3-yl)-2,2′-bipyridines) was synthesized and characterized. A kind of isoPentyl-BTBP/SiO2-P adsorbent was obtained by impregnating isoPentyl-BTBP into porous silica/polymer support particles SiO2-P under reduced pressure. The effect of HNO3 concentration, contact time on the adsorption of isoPentyl-BTBP/SiO2-P towards 241Am(III) and 239Pu(IV) was studied. And the stability of isoPentyl-BTBP/SiO2-P in HNO3 medium was also evaluated. It turned out that isoPentyl-BTBP/SiO2-P had much higher affinity for 241Am(III) and 239Pu(IV) over FP elements in 3 M HNO3, fast adsorption kinetics towards 239Pu(IV), excellent stability in HNO3 medium, and should be a very promising adsorbent for separating 239Pu(IV) and 241Am(III) from HLLW.

中文翻译：

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软N-给体异戊基-BTBP的合成及其对高放废液中锕系元素的去除研究

摘要 为了直接从高放废液 (HLLW) 中分离锕系元素，一种新型分子，即。e. 合成并表征了异戊基-BTBP（6,6'-双（5,6-双（4-甲基戊基）-1,2,4-三嗪-3-基）-2,2'-联吡啶）。通过在减压条件下将异戊基-BTBP浸渍到多孔二氧化硅/聚合物载体颗粒SiO2-P中，得到了一种异戊基-BTBP/SiO2-P吸附剂。研究了 HNO3 浓度、接触时间对异戊基-BTBP/SiO2-P 对 241Am(III) 和 239Pu(IV) 吸附的影响。并且还评估了isoPentyl-BTBP/SiO2-P在HNO3介质中的稳定性。结果表明，在 3 M HNO3 中，isoPentyl-BTBP/SiO2-P 对 241Am(III) 和 239Pu(IV) 的亲和力比 FP 元素高得多，对 239Pu(IV) 的吸附动力学快，在 HNO3 介质中具有出色的稳定性，