均分散针状α-Fe2O3的制备

摘要/Abstract

摘要： 均分散α-Fe₂O₃的合成方法有沉化法^[1]、强迫水解法^[2,3]和水热法^[4,5].在不添加结晶助剂时,α-Fe₂O₃通常形成立方形、球形或椭球形.

Abstract: Uniform acicular hematite used as starting material for magnetic recording were prepared by hydrothermal reaction from condensed ferric hydroxide gel.The simplified procedure under general experimental conditions was used.In the presence of organic chelating agent(HEDP) acicular particles were observed.However,with concentration of HEDP increasing from 1×10^-3 mol/L to 1×10^-2 mol/L,uniform cubic α-Fe₂O₃ was obtained.The experimental results show that the volume of the particles is dependent on the number of nuclei produced in the precipitation stage of Fe(OH)₃.

Key words: α-Fe₂O₃, Fe(OH)₃, acicular particlese

魏雨, 郑学忠, 刘晓林, 邵素霞, 鹿平. 均分散针状α-Fe₂O₃的制备[J]. 应用化学, 1996, 0(1): 86-88.

Wei Yu, Zheng Xuezhong, Liu Xiaolin, Shao Shuxia, Lu Ping. Preparation of Monodispersed Acicular α-Fe₂O₃[J]. Chinese Journal of Applied Chemistry, 1996, 0(1): 86-88.

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[6]	张凯华, 姜继森, 陈龙武. 均匀铁氧化物(含水)胶体粒子的制备[J]. 应用化学, 1991, 0(3): 89-92.

均分散针状α-Fe₂O₃的制备

Preparation of Monodispersed Acicular α-Fe₂O₃

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