无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2011, Vol. 43 ›› Issue (3): 18-.

• 论文 • 上一篇    下一篇

撞击流反应器制备纳米四氧化三铁的研究

刘东1,林修洲2,朱想明1,罗晓刚1   

  1. 1.武汉工程大学化工与制药学院,湖北武汉 430073;2.四川理工学院材料与化学工程系
  • 发布日期:2011-04-19

Preparation of Fe3O4 nanoparticles by impinging stream reactor

Liu Dong1,Lin Xiuzhou2,Zhu Xiangming1 ,Luo Xiaogang1   

  1. 1.School of Chemical Engineering & Pharmacy,Wuhan Institute of Technology,Wuhan 430073,China;2.Department of Material & Chemical Engineering,Sichuan Institute of Science & Engineering
  • Published:2011-04-19

摘要: 在浸没式循环撞击流反应器中,以氨水为沉淀剂,用七水合硫酸亚铁和六水合三氯化铁为原料,采用共沉淀法制备了纳米四氧化三铁粒子。考察了搅拌转速、亚铁与三价铁物质的量比、反应温度和溶液pH对所得纳米四氧化三铁的分散性和粒径的影响。采用傅里叶红外光谱仪、透射电镜、X射线衍射仪等对制得的纳米粒子的结构和性能进行了表征。结果表明:用撞击流反应器制备纳米四氧化三铁粒子的最佳工艺条件:亚铁与三价铁物质的量比为1 ∶1,反应温度为40 ℃,搅拌转速为1 600 r/min,以氨水作沉淀剂,最佳pH控制在11.0左右。在上述条件下,可以制备出分散性好、纯度高、平均粒径为10 nm的四氧化三铁粒子。

关键词: 纳米四氧化三铁, 共沉淀法, 撞击流反应器

Abstract: In submerged circulative impinging stream reactor,Fe3O4 nanoparticles were prepared by co-precipitation method,with FeSO4•7H2O and FeCl3•6H2O as raw materials,and ammonia as precipitator.Effects of stirring rate,amount-of-substance ratio of Fe2+ to Fe3+,reaction temperature,and pH on dispersion and particle size of Fe3O4 nanoparticles were investigated.Structure and performance of Fe3O4 nanoparticles were characterized by Fourier transform infrared spectroscopy (FT-IR),transmission electron microscopy (TEM),and X-ray diffraction (XRD).Results showed that Fe3O4 nanoparticles with good dispersion,high purity,and mean particle size of 10 nm could be prepared under following optimum technological conditions:amount-of-substance ratio of Fe2+ to Fe3+ was 1 ∶1,reaction temperature was 40 ℃,stirring rate was1 600 r/min,pH was about 11.0 in the presence of ammonia as precipitant.

Key words: Fe3O4nanoparticles, co-precipitation method, impinging stream reactor

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