摘要
甲酸的存在降低了Ｐｕ（Ⅳ）在水相和３０％ＴＢＰ－正十二烷间的分配比，这是甲酸被萃入有机相所起的排挤作用及它对Ｐｕ（Ⅳ）的络合作用的结果。用萃取法测定了甲酸与四价钚的络合物稳定常数，并通过单级萃取实验，探讨了甲酸、甲酸加硝酸羟胺（ＨＡＮ）应用于铀二循环铀中去钚的可能性。实验结果表明：甲酸对铀、钚分离有一定的效果，但不理想。向ＨＡＮ洗涤液中加入甲酸，洗涤效果改善不明显。
ormic acid can decrease the partition ratio of plutonium by TBP extraction. Its decrease is due to not only the displacement of formic acid, but also the formation of formate complexes of plutonim. The stability constants for the complexes are determined by using liquidliquid partition method. The probability for application of formic acid to the separation of plutonium in second uranium cycle is investigated also by single stage extraction technique. The scrubbing effect is not good enough by using formic acid alone, and can not be improved by addition of formic acid to hydroxylamine scrub solution.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
1998年第S1期11-16,共6页
Atomic Energy Science and Technology
关键词
甲酸
Pu(Ⅳ)
络合
稳定常数
Formic acid Plutonium(Ⅳ) Complexation Stability constant
