Synthetic inorganic ion-exchange materials. LVIII. Hydrothermal synthesis of a new layered lithium titanate and its alkali ion exchange.

• Sugita Mitsuru

  Department of Chemistry, Faculty of Science, Tokyo Institute of Technology

• Tsuji Masamichi

  Department of Chemistry, Faculty of Science, Tokyo Institute of Technology

• Abe Mitsuo

  Department of Chemistry, Faculty of Science, Tokyo Institute of Technology

抄録

A new crystalline hydrous lithium titanate, (Li_1.81, H_0.19)Ti₂O₅·2.2H₂O, was synthesized hydrothermally at 190 °C by a reaction of hydrous titanium dioxide with LiOH solution. The compound has a layered structure and showed a C–base-centered orthorhombic system with the lattice constants, a_o=16.66±0.02 Å, b_o=3.797±0.002 Å, and c_o=3.007±0.003 Å. The lattice constants were changed to a_o=18.08±0.03 Å, b_o=3.784±0.003 Å, and c_o=2.998±0.002 Å upon conversion to the hydrogen form. The 8.5% increase in the a_o value along the a axis suggests a layered structure. A hypothetical structure was proposed. The H⁺ form showed the ion-exchange selectivity at an ionic strength of 0.1 in the order of K⁺<Na⁺<Li⁺ at pH>6 and Li⁺<K⁺<Na⁺ at pH<6.

収録刊行物

• Bulletin of the Chemical Society of Japan

  Bulletin of the Chemical Society of Japan 63 (7), 1978-1984, 1990

  公益社団法人 日本化学会

キーワード

• General Chemistry

詳細情報

• CRID: 1390001204117985792
• NII論文ID: 130001979491
• DOI: 10.1246/bcsj.63.1978
• ISSN: 13480634
• ISSN: 00092673
• Web Site: https://academic.oup.com/bcsj/article-pdf/63/7/1978/56214454/bcsj.63.1978.pdf
• 本文言語コード: en
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