Hydrous Titanium Oxide Ion Exchanger, (I):Method of Synthesis and Some Properties
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概要
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Synthesis of hydrous titanium oxide ion exchanger was tried from three systems: (a) TiCl<SUB>4</SUB>-NaOH-H<SUB>2</SUB>O, (b) ATS (ammonium titanyl sulphate monohydrate)-NaOH-H<SUB>2</SUB>O and (c) TiCl<SUB>4</SUB>-NH<SUB>4</SUB>OH-H<SUB>2</SUB>O. The first method gave the best results under the conditions covered in the present work.<BR>It was found that repeated washing and aging of the hydrous titanium oxide pre-cipitate were indispensable in order to obtain reproducible results, and that this operation further obviated the need of precisely adjusting the conditions for mixing the reagents.<BR>Both the yield of exchanger and the ion exchange capacity of the resulting product increase with concentration of the reagents. A cation exchange capacity of about 3 meq•Na<SUP>+</SUP>/g could be obtained, which is considerably higher than any corresponding value reported in literature. The value decreased with increasing drying temperature. Irre-spectively of the conditions of synthesis, the chemical composition was TiO<SUB>2</SUB>(2.02.2) H<SUB>2</SUB>O, and the impurities contained in the product were found to be less than 0.1w/o.<BR>The exchanger produced is in granular form suitable for use in column operation. It is fairly stable in alkaline solution, and also in mineral acid solutions of <0.1 N concentration.
- 一般社団法人 日本原子力学会の論文
著者
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Tsuji Masamichi
Department Of Chemical Science Graduate School Of Natural Science And Technology Kanazawa University
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Inoue Yasushi
Department of Applied Physics, Osaka University
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