Physicochemical Properties of Potassium Nickel Hexacyanoferrate(II)-Loaded Chabazites
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概要
- 論文の詳細を見る
Insoluble hexacyanoferrate(II)s are well known to have an extremely strong affinity for Cs<SUP>+(1)</SUP>, and they have been studied mainly in connection with the removal of <SUP>137</SUP>Cs from radioactive waste solutions<SUP>(2)</SUP>. Potassium nickel hexacyanoferrate(II)s (KNiFC) are readily obtained by precipitating Ni(NO<SUB>3</SUB>)<SUB>2</SUB> with K<SUB>4</SUB>Fe(CN)<SUB>6</SUB><SUP>(3)(4)</SUP>, while they are composed of aggregates of very fine crystals and have insufficient mechanical stability during repeat sorption-desorption cycles. Several granulation methods have been proposed for modifying microcrystalline ferrocyanides into granular shape by freezing and thawing precipitated gels<SUP>(5)</SUP>, or by binding precipitate particles with insoluble polymers<SUP>(6)</SUP>, while these procedures for preparation were rather complicated and results were often not reproducible.<BR>In order to overcome these difficulties, we have developed a simplified method for incorporation of KNiFC crystals into the porous support of chabazite by successive impregnation of macro pores with Ni(NO<SUB>3</SUB>)<SUB>2</SUB> and K<SUB>4</SUB>Fe(CN)<SUB>6</SUB> solutions<SUP>(7)</SUP>. For the practical application of this exchanger to the treatment of radioactive waste solutions, it is necessary to evaluate the physicochemical properties such as chemical and thermal stability. The present paper deals with the resistance of KNiFC-loaded chabazite (abbreviated as CFC) against acid and alkaline solutions and with the thermal transformation at high temperature in connection with the uptake behavior of Cs<SUP>+</SUP>
- 社団法人 日本原子力学会の論文
- 1998-05-25
著者
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AKIBA Kenichi
Institute for Advanced Materials Processing, Tohoku University
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Kimura M
Institute For Advanced Materials Processing Tohoku University
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Akiba K
Institute Of Multidisciplinary Research For Advanced Materials. Tohoku University
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Akiba Kenichi
Institute For Advanced Materials Processing Tohoku University
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MIMURA Hitoshi
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
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ONODERA Yoshio
National Institute of Advanced Industrial Science and Technology
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Onodera Y
National Inst. Advanced Industrial Sci. And Technol. Sendai
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Mimura H
Tohoku Univ. Sendai
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Mimura Hitoshi
Institilte Of Multidisciplinary Research For Advanced Materials Tohoku University
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ONODERA Yoshio
Tohoku National Industrial Research Institute
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KIMURA Masanori
Institute for Advanced Materials Processing, Tohoku University
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Kimura Masanori
Institute For Advanced Materials Processing Tohoku University
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