超重力场中合成立方形纳米CaCO_3颗粒与表征  

Synthesis and Characterization of Cube-shaped CaCO_3 Nanometer Particles in High Gravity Field

作　　者：陈建峰[1] 贾志谦[1] 王玉红[1] 郑冲[1] 

机构地区：[1]北京化工大学超重力工程技术研究中心

出　　处：《Chinese Journal of Chemical Physics》1997年第5期457-460,共4页化学物理学报（英文）

基　　金：国家自然科学基金

摘　　要：在超重力场中合成了平均表观粒径在１７．５～２１．５ｎｍ之间、粒度分布窄的立方形纳米ＣａＣＯ３颗粒。探讨了超重力水平对颗粒粒度、反应时间的影响，并对颗粒进行了ＴＥＭ、ＸＲＤ、ＴＧ和ＤＴＡ等表征。与常重力场中合成纳米ＣａＣＯ３相比，粒度分布较窄。随着超重力水平的提高，产物粒径减小，反应时间明显降低。The cube-shaped particles of CaCO3 of average size from 175 to 215nm and of very narrow size distribution were synthesized in High Gravity Field The influence of the high gravity level on the particles size and the reaction time were experimentally investigated The particles were characterized by TEM, XRD, TG, DTA techniques, and also the particles size distribution was analyzed.

关 键 词：超重力场 立方形 碳酸钙 纳米颗粒 

分 类 号：O614.231[理学—无机化学]