期刊信息

  • 刊名: 河北师范大学学报(自然科学版)Journal of Hebei Normal University (Natural Science)
  • 主办: 河北师范大学
  • ISSN: 1000-5854
  • CN: 13-1061/N
  • 中国科技核心期刊
  • 中国期刊方阵入选期刊
  • 中国高校优秀科技期刊
  • 华北优秀期刊
  • 河北省优秀科技期刊

Fe(Ⅱ)离子对γ-FeOOH相转化为α-Fe2O3的影响

  • 1. 华南理工大学轻化工研究所 510641 广州;
    2. 河北师范大学化学系 050016 石家庄
  • DOI:

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

摘要/Abstract

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。

Abstract:

Phase transformation of γ-FeOOH particles in the presence of FeSO4 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.