水熱法で得られた合成ウィットロッカイトの組成

• 橋本 和明

  千葉工業大学工学部工業化学科

• 小林 強

  ニチアス株式会社

• 戸田 善朝

  千葉工業大学工学部工業化学科

• 金澤 孝文

  千葉工業大学付属研究所

• 宇田川 重和

  千葉工業大学付属研究所

書誌事項

タイトル別名

• Chemical Composition of Synthetic Whitlockite Prepared by Hydrothermal Method
• スイネツホウ デ エラレタ ゴウセイ ウィットロッカイト ノ ソセイ

抄録

Synthetic Mg-containing whitlockite was hydrothermally prepared and was investigated on Ca deficiency, chemical composition and thermal behavior.<BR>Synthetic Mg-containing whitlockite was successfully synthesized under hydrothermal conditions below 350°C. In preparing at high concentration of both KOH and H₃PO₄ solutions, Ca-defected non-stoichiometric whitlockite (Ca_18-xMg₂K_yH_2+z (PO4) 14·nH₂O; x=y+z, n=1-3) was formed. On the other hand, stoichiometric whitlockite (Ca₁₈Mg₂H₂ (PO₄) ₁₄) was formed at the low concentration condition of both solutions. For the purpose of the compensation of electric charge and stabilization of whitlockite structure, synthetic whitlockite included water of crystallization and K⁺ ion and they decreased with lowering of concentration of both solutions. The contents of water of crystallization and K⁺ ion in whitlockite were considerably dependent on Ca-deficiency and they decreased with decreasing of amount of Ca-deficiency. The increase in Ca-deficiency lowered the decomposition temperature and thermal stability of synthetic whitlockite

収録刊行物

• 無機マテリアル

  無機マテリアル 6 (279), 110-116, 1999

  無機マテリアル学会

キーワード

• Synthetic whitlockite
• β-Tricalcium phosphate structure
• Hydrothermal method
• Ca-Deficiency

詳細情報

• CRID: 1390001205389855488
• NII論文ID: 130004011760
• NII論文ID: 10002125416
• NII書誌ID: AN10455831
• ISSN: 13407899
• ISSN: 2185436X
• DOI: 10.11451/mukimate1994.6.110
• NDL書誌ID: 4665969
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4665969
• データソース種別:
  • JaLC
  • NDL
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可