Fe(Ⅱ)离子对γ-FeOOH相转化为α-Fe_2O_3的影响  

The Influence of Fe(Ⅱ)ions on the Transformation of γFeOOH

作　　者：马子川[1,2] 魏雨[1,2] 郑学忠 郭祀远[1,2] 

机构地区：[1]华南理工大学轻化工研究所 [2]河北师范大学化学系

出　　处：《河北师范大学学报（自然科学版）》1998年第2期223-225,共3页Journal of Hebei Normal University：Natural Science

基　　金：河北省教委科研基金

摘　　要：研究了ＦｅＳＯ４浓度及ｐＨ值（４～８）对γＦｅＯＯＨ在（９９±１）℃下相转化为αＦｅ２Ｏ３的影响．结果表明，Ｆｅ（Ⅱ）／Ｆｅ（Ⅲ）为３％～５％及ｐＨ值为近中性时相转化时间最短．指出Ｆｅ（Ⅱ）离子对γＦｅＯＯＨ的促进作用为ＦｅＯＨ＋吸附在γＦｅＯＯＨ表面使其溶解造成的．Phase transformation of γFeOOH particles in the presence of FeSO4 was studied in the range of pH from 4.0～8.0　at (99±1)℃.Results showed that the catalytic activity of Fe(Ⅱ)ions for γFeOOH phase transformation at pH near neutralily,effect of Fe(Ⅱ)ions concentration on γFeOOH phase　transformation was discussed.

关 键 词：Γ-FEOOH 相转化 三氧化二铁 磁粉 铁离子 

分 类 号：TQ586.1[化学工程—精细化工]