Preparation of Acid Deficient Solutions of Uranyl Nitrate and Thorium Nitrate by Steam Denitration.

• YAMAGISHI Shigeru

  Department of Chemistry and Fuel Research, Japan Atomic Energy Research Institute

• TAKAHASHI Yoshihisa

  Department of Chemistry and Fuel Research, Japan Atomic Energy Research Institute

抄録

Acid deficient heavy metal (HM) nitrate solutions are often required in the internal gelation processes for nuclear fuel fabrication. The stoichiometric HM-nitrate solutions are needed in a sol-gel process for fuel fabrication. A method for preparing such nitrate solutions with a controlled molar ratio of nitrate/metal by denitration of acid-excess nitrate solutions was developed. The denitration was conducted by bubbling a nitrate solution with a mixture of steam+Ar. It was found that steam was more effective for the denitration than Ar. The acid deficient uranyl nitrate solution with nitrate/U=1.55 was yielded by steam bubbling, while not by only Ar bubbling. As for thorium nitrate, acid deficient solutions of nitrate/Th ?? 3.1 were obtained by steam bubbling.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　Ｎｕｃｌｅａｒ　Ｓｃｉｅｎｃｅ　ａｎｄ　Ｔｅｃｈｎｏｌｏｇｙ（日本原子力学会英文論文誌）

  Ｊｏｕｒｎａｌ　ｏｆ　Ｎｕｃｌｅａｒ　Ｓｃｉｅｎｃｅ　ａｎｄ　Ｔｅｃｈｎｏｌｏｇｙ（日本原子力学会英文論文誌） 33 (2), 147-151, 1996

  一般社団法人 日本原子力学会

キーワード

• chemical preparation
• acid deficient solution
• uranyl nitrates
• thorium nitrates
• denitration
• steam
• argon
• mixture

詳細情報

• CRID: 1390001204095580288
• NII論文ID: 10002074221
• NII書誌ID: AA00703720
• DOI: 10.3327/jnst.33.147
• COI: 1:CAS:528:DyaK28XhvVent70%3D
• ISSN: 18811248
• ISSN: 00223131
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可