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Citation: WANG Xing-Yao, KANG Xiao-Hong, XIE Hui-Qin, LU Li-Zhu. Preparation of Nanosized α-Fe₂O₃ by Hydrothermal Stripping Process[J]. Chinese Journal of Applied Chemistry, ;2004, 21(7): 655-659. shu

Preparation of Nanosized α-Fe₂O₃ by Hydrothermal Stripping Process

1.
Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080

Corresponding author: LU Li-Zhu,
Received Date: 20 October 2003
Available Online: 12 March 2004
Fund Project: 国家自然科学基金(20276074)资助项目 (20276074)

The technique of hydrothermal stripping was applied to prepare nanosized α-Fe₂O₃ powders from iron-loaded organic phase composed of naphthenic acid,isooctyl alcohol and kerosene.Infrared spectra indicated that the naphthenic acid used in the experiments is stable and TEM images showed that the particles of the α-Fe₂O₃ powders are quasi-elliptical sphere in shape and have average diameter ranges from 2 nm to 30 nm.The technique is environmental friend.The investigation showed that the granularity of Fe₂O₃ powders could be controlled by changing iron concentration,reaction temperature,pH of the aqueous phase and stripping time,as well as by addition of surfactants.
- nanosized α-Fe₂O₃,
- hydrothermal stripping,
- naphthenic acid,
- preparation
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Preparation of Nanosized α-Fe₂O₃ by Hydrothermal Stripping Process