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Report No.

Study on $$^{99}$$Mo production by solution irradiation method, 1; Characterization of aqueous molybdate solutions under unirradiation

Inaba, Yoshitomo  ; Ishikawa, Koji*; Iimura, Koichi ; Tatenuma, Katsuyoshi*; Ishitsuka, Etsuo   

In the present study, the schematic structure of the $$^{99}$$Mo production system with the solution irradiation method was investigated, and two kinds of aqueous molybdate solutions (an aqueous ammonium molybdate solution and an aqueous potassium molybdate solution) were selected as candidates for the irradiation target of the solution irradiation method, and then the molybdenum adsorption performance of PZC with the solutions, the properties of the molybdates to be materials of the solutions, the compatibility between the solutions and structural materials, and the chemical stability of the solutions were investigated under unirradiation. As a result, it was found that the aqueous potassium molybdate solution is promising as the target in terms of the molybdenum content, the compatibility with the structural materials, and the chemical stability and that the aqueous ammonium molybdate solution with suitable pH adjustment has an aptitude for the target. In addition, it became clear that stainless steel having good compatibility with the solutions has a potential as the structural material of capsules, pipes and so on.



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