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Volume 37 Issue 4
Sep 2023
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Chinese Journal of High Pressure Physics  > 2023  >  37(4): 043201.
ZHU Qunlong, WANG Quan, WANG Xuguang, LI Rui, TU Changchang, YANG Rui, ZHU Wenyan. Characterization and Performance of Nano-La2O3 Prepared by Detonation Method[J]. Chinese Journal of High Pressure Physics, 2023, 37(4): 043201. doi: 10.11858/gywlxb.20230643
Citation: ZHU Qunlong, WANG Quan, WANG Xuguang, LI Rui, TU Changchang, YANG Rui, ZHU Wenyan. Characterization and Performance of Nano-La2O3 Prepared by Detonation Method[J]. Chinese Journal of High Pressure Physics, 2023, 37(4): 043201. doi: 10.11858/gywlxb.20230643
shu

Characterization and Performance of Nano-La2O3 Prepared by Detonation Method

doi: 10.11858/gywlxb.20230643
  • 1.

    School of Chemical Engineering, Anhui University of Science and Technology, Huainan 232001, Anhui, China

  • 2.

    Anhui Provincial Blasting Equipment and Technology Engineering Laboratory, Huainan 232001, Anhui, China

  • 3.

    Beijing General Research Institute of Mining & Metallurgy, Beijing 102628, China

  • Received Date: 19 Apr 2023
  • Rev Recd Date: 10 May 2023
  • Accepted Date: 17 May 2023
    • Available Online: 17 Aug 2023
  • Issue Publish Date: 01 Sep 2023
    Abstract
  • It is very important that new preparation method of nano-lanthanum oxide is explored in view of the current problems of low purity, poor sinterability, and large molecular gaps. Detonation method was employed to prepare rare earth nano-La2O3 powder in this study. La(NO3)3·6H2O was added to the emulsion explosive as a lanthanum source, and the high temperature and high pressure conditions for the synthesis of La2O3 were provided by the detonation reaction of the emulsion explosive in a 0.5 kg TNT equivalent vacuum explosion container. The physical phases, morphologies and ingredients of the purified and forged products were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FT-IR), and the powder performances were determined by ultraviolet-visible spectroscopy (UV-Vis), Brunauer Emmett Teller (BET), CO2-temperature programmed desorption (CO2-TPD) and O2-temperature programmed desorption (O2-TPD). The results show that the forging temperature has a significant effect on the crystalline growth of La2O3 powder. Nano-La2O3 powder with high ultraviolet light absorption, high purity and good dispersion was successfully produced at a forging temperature of 800 ℃ and a forging time of 3 h. The particle size is in the range of 50－175 nm, and the crystal has a hexagonal structure. The specific surface area of the nano-La2O3 is 17.46 m2/g, with a good pore order and concentrated pore size distribution. The nano-La2O3 has good adsorption of acid gas and oxygen migration performance. The detonation method applied to the preparation process of nano-La2O3 powder provides a new reference for the industrial preparation of nano-La2O3.

     

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