微孔分散法制备超细CaCO_3  

Preparation of ultrafine calcium carbonate with micropore dispersion

作　　者：吴国华[1] 朴香兰[1] 王玉军[1] 朱慎林[1] 

机构地区：[1]化学工程联合国家重点实验室(清华大学),北京100084

出　　处：《化工学报》2006年第6期1482-1485,共4页CIESC Journal

摘　　要：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 30 m2·g -1 were prepared successfully.The crystal structure of particles was characterized with BET, FTIR and TEM.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 40nrn and specific surface area more than 30 m^2 · g^-1 were prepared successfully. The crystal structure of particles was characterized with BET, FTIR and TEM.

关 键 词：超细CACO3 微孔分散 微反应器 纳米颗粒 

分 类 号：TQ132.3[化学工程—无机化工]