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Thermal and photo-oxidation of a potential extractant in nuclear fuel reprocessing

机译:核燃料后处理中潜在萃取剂的热氧化和光氧化

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Malonamides have been investigated by the C.E.A. (Commissariat a l'Energie Atomique) to extract actinides (III) and lanthanides (III) from acidic nitrate nuclear waste solutions. The destructin of these potentially incinerable molecules has been tested in relatively soft conditions: thermal oxidation at temperatures below 250 deg C and photo-oxidation at short wavelengths (185-254 nm). qualitative and quantitative analysis of main degradation products allows the comparison between these methods. Thermal oxidation leads to a rapid destruction of the initial modecule but numerous by-products and some black insoluble material appear, whereas photo-oxidation is slower but doensn't give so many by-products and any insoluble residues.
机译:丙二酰胺已由C.E.A. (Commerariat a l'Energie Atomique)从酸性硝酸盐核废液中提取act系元素(III)和镧系元素(III)。已经在相对较软的条件下测试了这些可能被焚化的分子的破坏素:在低于250摄氏度的温度下进行热氧化,在短波长(185-254 nm)下进行光氧化。通过对主要降解产物进行定性和定量分析,可以对这些方法进行比较。热氧化导致初始分子的快速破坏,但出现了许多副产物和一些黑色的不溶物,而光氧化反应则较慢,但不会产生这么多副产物和任何不溶性残留物。

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