反应条件对氧化铁结晶行为的影响  

EFFECT OF REACTION CONDITION ON CRYSTALLIZATION BEHAVIOR OF FERRIC OXIDE

作　　者：史培阳[1] 刘承军[1] 王媛媛[1] 姜茂发[1] 

机构地区：[1]东北大学材料与冶金学院,沈阳110004

出　　处：《硅酸盐学报》2008年第9期1300-1303,共4页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金(50204005)资助项目

摘　　要：借助扫描电镜、X射线衍射、红外光谱等分析手段,系统探讨了水热反应条件下,反应温度和时间对氧化铁结晶行为的影响。随着反应温度的升高,样品中的FeOOH相转变为Fe2O3,在表面吸附的SO2-4呈减少的趋势,晶体形状均为球形。随着反应时间的延长,样品中均含有Fe2O3和FeOOH相,在表面吸附SO2-4呈减少趋势,晶体尺寸增大,晶体形态由球形向纺锤形转变。Effects of temperature and time on the crystallization behavior of ferric oxide were studied under the hydrothermal condition by scanning electron microscope, X-ray diffraction and infrared spectroscopy. With the increasing of temperature, the FeOOH phases in the sample are changed to Fe2O3, and SO4^2- is gradually adsorbed on the surface, all of the crystals are spherical. With the increasing of time, the sample included Fe2O3 phases and FeOOH phases, and the amotmt of SO4^2- adsorbed on the surface gradually decrease. The size of the crystals increases, and the crystal shape is changed from spherical to spindly.

关 键 词：纳米氧化铁 水热法 温度 时间 转炉渣 

分 类 号：TQ682.2[化学工程] TG146.4[一般工业技术—材料科学与工程]