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KMID : 1059519950390110869
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Journal of the Korean Chemical Society
1995 Volume.39 No. 11 p.869 ~ p.877
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Studies on the Preparation of Aragonite (Ⅱ): Formation of Pillar Aragonite by the Carbonation of Slake Lime Suspension
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Park Seoung-Sik
Lee Hee-Cheol
Jun Sang-Moon
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Abstract
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Carbonation process of Jung sun slake lime(Sr(OH)2=0.053 wt%) suspension with CO2 gas at 30∼80℃ has been studied to investigate the formation process of aragonite. The reaction temperature at above 50℃, rhombic nuclei of SrCO3 has been grown with the interaction of CO32-(aq) which is profitable to growth the nuclei at the liquid film of gas-liquid interface to form pillar aragonite crystal. At 40℃, the controlling of concentration of CO2(aq) at the beginning of the reaction has been made the nuclei to growth to be an aragonite crystal. Addition of some Sr(OH)2 to Yi Lee slake lime (Sr(OH)2=0.011 wt%) suspension and controlling the concentration of OH-(aq) and CO2(aq), the carbonation reaction produced pillar aragonite crystal with the short side of 0.1∼0.2 ㎛ and long side of 1∼2 ㎛.
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