Thermodynamic simulation of hydrogen reduction of NbCl5 to produce Nb metal powder

Zhanmin Cao, Zhiyu Qiao, Jun Zhu, Hongmin Zhu

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


A thermodynamic simulation program for Nb powder production process by hydrogen reduction of NbCl5 in argon was developed by using SimuSage Software, which is a component library used in the developing of process simulation. The effects of the key parameters such as evaporation temperature, loading gas amount (Ar (g)), reduction temperature, H2 (g) amount and collection temperature were studied by the simulation program. The results show that the evaporation rate of NbCl5 (s) and the content of NbCl5 (g) in gas are dependent upon the evaporation temperature and the amount of Ar (g) used. To get Nb (s) as the unique solid product, a minimum H2 (g) amount of 20 mol per mol NbCl5 is needed when the reduction temperature is 1000°C. High temperature of collection is helpful to the purity of the solid Nb powder product.

Original languageEnglish
Pages (from-to)640-643
Number of pages4
JournalBeijing Keji Daxue Xuebao/Journal of University of Science and Technology Beijing
Issue number6
Publication statusPublished - 2008 Jun


  • Hydrogen reduction
  • Nb powder
  • Processing parameters
  • Thermodynamic simulation


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