摘要
为了解2,6-双(5,6-二异丙-基1,2,4-三唑-3)吡啶(iPr-BTP)在硝酸介质中对镅和铕的萃取行为,以30%辛醇/正十二烷溶液为稀释剂,考察了稀释剂的组成、萃取时间、硝酸浓度、萃取剂浓度及硝酸钠浓度对iPr-BTP萃取Am(Ⅲ)和Eu(Ⅲ)的影响,确定了萃合物组成和萃取反应方程式。实验结果表明,该萃取剂对镅的萃取能力较强,而对铕的萃取能力较弱。iPr-BTP对Am(Ⅲ)和Eu(Ⅲ)的萃取反应方程式可表示为:M3++3NO3-+3(iPr-BTP)(o)M(NO3)3.3(iPr-BTP)(o)。
Using 30% n-octanol/n-dodecane as diluent, the extraction behavior of Am （Ⅲ） and Eu（Ⅲ） from nitric acid solution was studied with 2,6-bis-（5,6-di-isopropyl-1,2,4-triazin -3-yl）-pyridine （iPr-BTP）. By investigating the influences of the concentration of nitric acid, the concentration of iPr-BTP, diluent composition and the contact time and the concentration of NaNO3 on the distribution ratio of Am（ Ⅲ ） and Eu（ Ⅲ ）, the composition of the extraction complexes and the extraction reaction equation were deduced. The extraction reaction equation may be expressed as follows：
M^3＋＋3NO3^-＋3（iPr-BTP（o）←→M（NO3）3·3（iPr-BTP（o）.
The results show that the capability of extracting americium by iPr-BTP is higher than that of extracting europium.
出处
《核化学与放射化学》
EI
CAS
CSCD
北大核心
2007年第1期23-26,共4页
Journal of Nuclear and Radiochemistry
