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一、引论在许多文献上都报导了从铀的裂片溶液中制各无载体Nb~(95)的方法。其中有用碘酸钍作载体从被照射过的硝酸铀酰中把Zr-Nb载出,然后用K_2CO_3熔融法分离Zr和Nb的方法;或者用二氧化锰作载体从铀的裂片产物中分离出Nb~(95)[2,3]的方法。也有用离子交换法来达到分离目的。在文献[5]中提到用硅胶柱吸附法直接从硝酸铀酰中吸附Nb、Zr,接着用草酸
I. INTRODUCTION In many literatures, it has been reported that the non-supported Nb ~ (95) is prepared from the uranium solution. Among them, thorium iodate is used as a carrier to carry Zr-Nb from irradiated uranyl nitrate, and then Zr and Nb are separated by K_2CO_3 fusion method; or manganese dioxide is used as a carrier to separate uranium from the lobed product Nb ~ (95) [2,3] method. Also useful ion exchange method to achieve the purpose of separation. In [5] it is mentioned that Nb and Zr are adsorbed directly from uranyl nitrate by silica gel column adsorption followed by oxalic acid