SCI和EI收录∣中国化工学会会刊

›› 2011, Vol. 19 ›› Issue (6): 1047-1051.

• • 上一篇    下一篇

Preparation of Nano-MnFe2O4 and Its Catalytic Performance of Thermal Decomposition of Ammonium Perchlorate

韩爱军, 廖娟娟, 叶明泉, 李燕, 彭新华   

  1. School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
  • 收稿日期:2011-05-12 修回日期:2011-11-03 出版日期:2011-12-28 发布日期:2012-04-24
  • 通讯作者: HAN Aijun, E-mail: gjchaoxi@yahoo.com.cn
  • 基金资助:
    Supported by the National Natural Science Foundation of China (90305008, 51077072)

Preparation of Nano-MnFe2O4 and Its Catalytic Performance of Thermal Decomposition of Ammonium Perchlorate

HAN Aijun, LIAO Juanjuan, YE Mingquan, LI Yan, PENG Xinhua   

  1. School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
  • Received:2011-05-12 Revised:2011-11-03 Online:2011-12-28 Published:2012-04-24
  • Supported by:
    Supported by the National Natural Science Foundation of China (90305008, 51077072)

摘要: Nano-MnFe2O4 particles were synthesized by co-precipitation phase inversion method and low-temperature combustion method respectively, using MnCl2, FeCl3, Mn(NO3)2, Fe(NO3)3, NaOH and C6H8O7. X-ray diffraction (XRD), transmission electron microscope (TEM), Fourier transform infrared spectroscopy (FT-IR), thermogravimetry-differential thermal analysis (TG-DTA) and differential scanning calorimetry (DSC) were used to characterize the structure, morphology, thermal stability of MnFe2O4 and its catalytic performance to ammonium perchlorate. Results showed that single-phased and uniform spinel MnFe2O4 was obtained. The average particle size was about 30 and 20 nm. The infrared absorption peaks appeared at about 420 and 574 cm-1, and the particles were stable below 524℃. Using the two prepared catalysts, the higher thermal decomposition temperature of ammonium perchlorate was decreased by 77.3 and 84.9℃ respectively, while the apparent decomposition heat was increased by 482.5 and 574.3 J·g-1. The catalytic mechanism could be explained by the favorable electron transfer space provided by outer d orbit of transition metal ions and the high specific surface absorption effect of MnFe2O4 particles.

关键词: MnFe2O4, co-precipitation phase inversion method, low-temperature combustion method, ammonium perchlorate, catalysis

Abstract: Nano-MnFe2O4 particles were synthesized by co-precipitation phase inversion method and low-temperature combustion method respectively, using MnCl2, FeCl3, Mn(NO3)2, Fe(NO3)3, NaOH and C6H8O7. X-ray diffraction (XRD), transmission electron microscope (TEM), Fourier transform infrared spectroscopy (FT-IR), thermogravimetry-differential thermal analysis (TG-DTA) and differential scanning calorimetry (DSC) were used to characterize the structure, morphology, thermal stability of MnFe2O4 and its catalytic performance to ammonium perchlorate. Results showed that single-phased and uniform spinel MnFe2O4 was obtained. The average particle size was about 30 and 20 nm. The infrared absorption peaks appeared at about 420 and 574 cm-1, and the particles were stable below 524℃. Using the two prepared catalysts, the higher thermal decomposition temperature of ammonium perchlorate was decreased by 77.3 and 84.9℃ respectively, while the apparent decomposition heat was increased by 482.5 and 574.3 J·g-1. The catalytic mechanism could be explained by the favorable electron transfer space provided by outer d orbit of transition metal ions and the high specific surface absorption effect of MnFe2O4 particles.

Key words: MnFe2O4, co-precipitation phase inversion method, low-temperature combustion method, ammonium perchlorate, catalysis