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South African Journal of Chemistry

On-line version ISSN 1996-840X
Print version ISSN 0379-4350


CAI, Yan-Hua; MA, Dong-Mei; PENG, Ru-Fang  and  CHU, Shi-Jin. Preparation of ultra-fine calcium carbonate by a solvent-free reaction using supersonic airflow and low temperatures. S.Afr.j.chem. (Online) [online]. 2008, vol.61, pp.112-114. ISSN 1996-840X.

The treatment of calcium chloride with sodium carbonate under solvent-free conditions with a supersonic airflow and at a low heating temperature leads to the synthesis of ultra-fine calcium carbonate. The reaction not only involves mild conditions, a simple operation, and high yields but also gives a high conversion rate.

Keywords : Supersonic airflow; solvent-free reaction; low temperature; calcium carbonate.

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