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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.117  No.1361 (January) (2009)  >  pp.106-110

Journal of the Ceramic Society of Japan
<<Previous article Vol.117  No.1361 (January) (2009)   pp.106 - 110 Next article>>

Synthesis of calcium carbonate in ethanol-ethylene glycol solvent

Miyoung RYU1), Jiwhan AHN1), Kwangsuk YOU1), Seishi GOTO3) and Hwan KIM2)
1) Korea Institutes of Geosciecne and Mineral Resources
2) School of Materials Sciecne and Engineering, Seoul National University
3) Graduate School of Medicine, Yamaguchi University


  Calcium carbonate has been synthesized from Ca(OH)2 in ethanol-ethylene glycol solvent by carbonation and aging process. Carbonation in organic solvent caused Ca(OH)2 to form a white gelatinous CaCO3 product, which was then destroyed by aging process. The calcium carbonate precipitated and agglomerated in these steps was composed of stable calcite, and meta-stable aragonite and vaterite. These meta-stable particles were shaped either peanut-like or sphere. When a little amount of distilled water was added to organic solvent, the meta-stable phases remarkably decreased, whereas stable calcite increased. When Ca(OH)2 was carbonated with water addition increased to 2 vol% of the total organic solvent and aged at 40°C, only rhombic calcite was synthesized.


Keyword:
Precipitated calcium carbonate, Peanut-like particle, Ethanol-ethylene glycol, Carbonation method, Aging process

Received: March 26, 2008
Accepted: September 11, 2008 , Published online: January 01, 2009
Copyright (c) 2009 The Ceramic Society of Japan

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