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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.116  No.1351 (March) (2008)  >  pp.481-485

Journal of the Ceramic Society of Japan
<<Previous article Vol.116  No.1351 (March) (2008)   pp.481 - 485 Next article>>

Synthesis of octacalcium phosphate intercalated with dicarboxylate ions from calcium carbonate and phosphoric acid

Masanobu KAMITAKAHARA1), Hiroaki OKANO2), Masao TANIHARA2) and Chikara OHTSUKI3)
1) Graduate School of Environmental Studies, Tohoku University
2) Graduate School of Materials Science, Nara Institute of Science and Technology
3) Department of Crystalline Materials Science, Graduate School of Engineering, Nagoya University


  We have investigated the effect of the Ca/P molar ratio in the starting composition on the synthesis of octacalcium phosphate intercalated with dicarboxylate ions (OCPC), starting from calcium carbonate and phosphoric acid in the presence of a dicarboxylic acid, such as succinic acid, adipic acid, or suberic acid. For a Ca/P molar ratio in the starting composition of 1.6, which is the stoichiometric value for OCPC, the highest yield of OCPC with a high degree of crystallinity was obtained for the OCPC samples synthesized with starting Ca/P molar ratios of 1.5, 1.6, and 1.7. The Ca/P molar ratio of the starting composition is an important factor in the synthesis of OCPC. This synthesis route provides for the effective production of OCPC samples.



Keyword:
Octacalcium phosphate, Calcium phosphate, Dicarboxylic acid, Intercalation, Calcium carbonate, Phosphoric acid

Received: August 28, 2007
Accepted: February 21, 2008 , Published online: March 01, 2008
Copyright (c) 2008 The Ceramic Society of Japan

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