Control of Crystal Size and Morphology of Calcium Carbonate Crystal Polymorphism
- 1 Department of Chemistry and Bioengineering, Faculty of Engineering, Iwate University, Morioka, Japan
- 2 Department of Chemistry and Bioengineering, Faculty of Engineering, Iwate University, Morioka, Japan
- 3 Department of Chemistry and Bioengineering, Faculty of Engineering, Iwate University, Morioka, Japan
- 4 OKUTAMA KOGYO CO., LTD., Tokyo, Japan
- 5 OKUTAMA KOGYO CO., LTD., Tokyo, Japan
- 6 OKUTAMA KOGYO CO., LTD., Tokyo, Japan
Abstract
Calcium carbonate, the main component of lime, has been widely used in industry due to its stability and economy. Calcium carbonate has three types of crystalline polymorphism, calcite, aragonite and vaterite, each with different properties. Therefore, the control of crystal polymorphism is required for industrial applications. In addition, the control of crystal size and shape is similarly required for different applications. In this study, the effect of SrCO 3 on the size control of fine aragonite-type calcium carbonate crystals by uniform urea precipitation and the effect of SrCO 3 addition was investigated by adding solid strontium carbonate and dissolved strontium carbonate. The addition of solid strontium carbonate affected the crystal polymorphism and size of the calcium carbonate produced, depending on the properties of the solid particles and the amount of SrCO 3 added. Experiments on the addition of dissolved SrCO 3 showed that the supersaturation formation rate could be controlled to control the crystal polymorphism.
- Maslen, E.N., Streltsov, V.A. and Streltsova, N.R. (1993) X-Ray Study of the Electron Density in Calcite CaCO3. Acta Crystallographica Section B, 49, 636-641. https://doi.org/10.1107/S0108768193002575
- De Villiers, P.R.J. (1971) Crystal Structures of Aragonite, Strontianite, and Witherite. American Mineralogist, 56, 758-767.
- Le Bail, A., Ouhenia, S. and Chateigner, D. (2011) Microtwinning Hypothesis for a More Ordered Vaterite Model, Powder Diffraction, 26, 16-21. https://doi.org/10.1154/1.3552994
- Kojima, Y., Sadotomo, A., Yasue, T. and Arai, Y. (1992) Control of Crystal Shape and Modification of Calcium Carbonate Prepared by Precipitation from Calcium Hydrogencarbonate Solution. Journal of the Ceramic Society of Japan, 100, 1145-1153.
- Kojima, Y., Kawanobe, A., Yasue, T. and Arai, Y. (1994) Controls of Polymorphism and Morphology of Calcium Carbonate Compounds Formed by Crystallizing Amorphous Calcium Carbonate Hydrate. Journal of the Ceramic Society of Japan, 102, 1128-1136.
- Wada, N. and Umegaki, T. (1993) Effect of Cation (Sr, Pb and Ba) on Calcium Carbonate Polymorphs under Diffusional Conditions. Gypsum & Lime, 245, 211-219.
- Jyonosono, K. and Kato, A. (1995) Crystallization of CaCO3 from Ca(NO3)2 Aqueous Solution by Homogeneous Precipitation Technique Using Urea. Inorganic Materials, 2, 492-497.
- Jyonosono, K., Nagashima, S., Tsuchida, K., Maeda, H. and Kato, A. (1997) Effect of Ni2+, Co2+, Mn2+ and Fe3+ Ions on Crystallization of Calcium Carbonate. Inorganic Materials, 4, 238-245.
- Shirota, Y., Niki, K. and Shindo, H. (2011) Stabilities of Crystal Faces of Aragonite-Type Strontianite (SrCO3) and Cerussite (PbCO3) Compared by AFM Observation of Facet Formation in Acid. Journal of Crystal Growth, 324, 190-195. https://doi.org/10.1016/j.jcrysgro.2011.03.033