Acta Chimica Sinica ›› 2007, Vol. 65 ›› Issue (7): 601-606. Previous Articles     Next Articles

Original Articles

一种新型储氢材料——改性四氧化三铁的储氢性能研究

王小芳1, 王惠*,1,2, 田勇1, 董发昕1, 史启祯1, 文振翼1   

  1. (1西北大学化学系 陕西省物理无机化学重点实验室 西安 710069)
    (2西北大学大陆动力学国家重点实验室 西安 710069)
  • 收稿日期:2006-10-27 修回日期:2006-11-20 出版日期:2007-04-14 发布日期:2007-04-14
  • 通讯作者: 王惠

Studies on Hydrogen Storage Properties of a New Material—Modified Fe3O4

WANG Xiao-Fang1; WANG Hui*,1,2; TIAN Yong1; DONG Fa-Xin1; SHI Qi-Zhen1; WEN Zhen-Yi1   

  1. (1 Shaanxi Key Laboratory of Physico-inorganic Chemistry, Chemistry Department, Northwest University, Xi'an 710069)
    (2 State Key Laboratory of Continental Dynamics, Northwest University, Xi'an 710069)
  • Received:2006-10-27 Revised:2006-11-20 Online:2007-04-14 Published:2007-04-14
  • Contact: WANG Hui

Modified Fe3O4 samples for hydrogen storage with different metal additives (Mo, Al, Cr, W) used in this work were prepared by precipitation of Fe3O4 from the aqueous solution of FeCl3 and (NH4)2Fe(SO4)2•6H2O. The apparatus used for the reduction and reoxidation of Fe3O4-Mo, Fe3O4-Al, Fe3O4-Cr, Fe3O4-W and Fe3O4-none samples was a value system of the performance of hydrogen storage with a fixed bed of the samples at the center of a quartz-made tubular reactor. These samples were characterized and measured by X-ray powder diffraction, scanning electron microscope and BET surface area analyzer. The results show that the temperatures of the samples Fe3O4-Mo in their 4 cyclic tests in the range of 310~314 ℃ (the flow rate of H2 was 300 μmol•min―1•Fe-g―1 at this time), were lower than that of the Fe3O4-none, and even lower than that of similar best one by 50 ℃. Moreover, the size of the samples Fe3O4 prepared by the present method used in this paper was 50~70 nm. Furthermore, cyclic stabilities and catalytic activities of the samples depended on the type of added metal and the size of the particle of the samples.

Key words: modified Fe3O4, hydrogen storage material, hydrogen storage property, cyclic stability