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Synthesis of Aragonite by the Carbonation Process
Author(s) -
Ahn JiWhan,
Choi KyungSun,
Yoon SeokHyun,
Kim Hwan
Publication year - 2004
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2004.00286.x
Subject(s) - aragonite , carbonation , magnesium , calcite , chemistry , calcium , ion , inorganic chemistry , calcium carbonate , mineralogy , nuclear chemistry , organic chemistry
The conditions necessary for synthesizing aragonite by the carbonation process were investigated. Aragonite formation was found to have no relation to the pH value, the mole ratio of MgCl 2 /Ca(OH) 2 , or the magnesium/calcium ion concentration in a solution. The synthesis of aragonite requires a concentration of magnesium ions in the appropriate range (∼0.1–0.26 mol/L) and a concentration of calcium ions below a certain range (less than ∼0.16–0.25 mol/L). An excess of calcium ions or magnesium ions favors calcite formation. Needlelike aragonite with a large aspect ratio was successfully synthesized in the present study.