• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 17 Issue 5
Oct.  2004
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Article Contents
ZHANGXi-yan, GAOJie-ming, ZHOUShi-jie, ZHANGJin. Comparison of Dissolving Processes for Preparationof Nano-CeO2Powers[J]. Journal of Southwest Jiaotong University, 2004, 17(5): 696-698.
Citation: ZHANGXi-yan, GAOJie-ming, ZHOUShi-jie, ZHANGJin. Comparison of Dissolving Processes for Preparation of Nano-CeO2Powers[J]. Journal of Southwest Jiaotong University, 2004, 17(5): 696-698.

Comparison of Dissolving Processes for Preparation of Nano-CeO2Powers

  • Publish Date: 25 Oct 2004
  • The dissolving processes with HCl and HNO3were compared experimentally. The proportion of dissolved CeO2with HCl was less than 25% accompanied with large consumption in raw materials and serious pollution by Cl2, unsuitable for production. On the other hand, the proportion of CeO2dissolved withHNO3was over 90% in the following reaction conditions: temperature 35 to 50℃, concentration of HNO3: 7.0 to 8.5 mol/L,VH2O2:VHNO3=0.125, dissolving time: 60 min. The resolved nano-powders were homogeneous and theirgrain sizeswere in the range of 30 to 40 nm. HNO3dissolving process saves raw materials and there is no pollution, showing industrialized production.

     

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      沈阳化工大学材料科学与工程学院 沈阳 110142

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