微量Fe^Ⅱ离子加速δ-FeOOH相转化历程的研究  

Studies of the phase-transformation of δ-FeOOH with promotion of a small amount of FeⅡ Ions in aqeuous solution

作　　者：孟哲[1] 魏雨[2] 

机构地区：[1]河北邢台学院化学系,河北邢台054001 [2]河北师范大学化学学院,河北石家庄050016

出　　处：《应用科技》2005年第1期56-58,61,共4页Applied Science and Technology

基　　金：河北省自然科学基金资助项目(501115).

摘　　要：以δ FeOOH为前驱体的液相转化研究表明,微量FeⅡ离子抑制δ FeOOH相转化为α Fe2O3由经δ FeOOH的生成,大大缩短δ FeOOH相转化为α Fe2O3的时间.结合X射线衍射光谱、红外光谱、透射电镜及粒度分析等测试手段,在微量FeⅡ存在下,对δ FeOOH相转化过程中结构、物相及形貌进行表征,并分析了微量FeⅡ离子加速δ FeOOH相转化的历程.In the presence of a small amount of Fe~Ⅱ ions, the phase-transformation of δ-FeOOH to α-Fe_2O_3 via the intermediate-phase α-FeOOH is controled in aqeuous solution. The time of the phase-transformation of δ-FeOOH to α-Fe_2O_3 is shortened speedily. Structural and morphological changes are characterized by various means such as XRD, FT-IR and TEM. The Mechanism of the phase-transformation of δ-FeOOH with Promotion of a small amount of Fe~Ⅱ ions will be investigated.

关 键 词：δ-FeOOH Fe^Ⅱ离子 相转化 Α-FEOOH 

分 类 号：TM912[电气工程—电力电子与电力传动]