在TBP-煤油有机相中光化还原制取U(Ⅳ)的研究——Ⅱ.降解产物的产生和它们对萃取的影响

    STUDIES ON THE PHOTOCHEMICAL REDUCTION TO PRODUCE U(Ⅳ) IN THE ORGANIC PHASE OF TBP-KEROSENE Ⅱ. PRODUCTION OF DEGRADATION PRODUCTS AND THEIR EFFECTS ON EXTRACTION

    • 摘要: 本文研究了在TBP-煤油体系中光化还原制取U(Ⅳ)时,降解产物的产生和它们对萃取性能的影响。结果表明,TBP-煤油的主要降解产物有DBP和MBP、羰基化合物和硝基烷。光照后的有机相经稀酸反萃和碱洗所得回收萃取剂的萃铀分配比、铀保留值和分相时间与新鲜萃取剂无明显差别)。

       

      Abstract: In the photochemical reducton of U(Ⅵ) to produce U(Ⅳ) in the organic phase, production of degradation products and their effects on extraction are investigated. The results show that main degradation products of TBP-kerosene consist of compounds such as DBP and MBP,carbonyl compounds and nitro compounds. The yields of these products are a function of composition and tem-perature of the solation.The extraction properties are compared between the recovered extractant and the fresh extractant. It is shown that these two ex-tractauts have no significant difference.

       

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