Preparation of ultrafine calcium carbonate with micropore dispersion

Abstract

Abstract: Ultrafine particles of CaCO₃ were synthesized with micropore dispersion in gas-liquid (slurry) systems.Experiments was conducted on carbonation of Ca(OH)₂/H₂O system.Micropore plate was used for the dispersion of mixed gas containing CO2.Therefore,the processes of momentum transfer, mass transfer and reaction were enhanced.The results showed that ultrafine particles with diameter about 40nm and specific surface area more than 30m2•g^-1 were prepared successfully.The crystal structure of particles was characterized with BET, FTIR and TEM.

Key words: 超细CaCO₃, 微孔分散, 微反应器, 纳米颗粒

关键词: 超细CaCO₃, 微孔分散, 微反应器, 纳米颗粒

WU Guohua, PIAO Xianglan, WANG Yujun, ZHU Shenlin. Preparation of ultrafine calcium carbonate with micropore dispersion[J]. CIESC Journal, 2006, 57(6): 1482-1485.

吴国华, 朴香兰, 王玉军, 朱慎林. 微孔分散法制备超细CaCO₃ [J]. 化工学报, 2006, 57(6): 1482-1485.

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