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Crystal transition of HNIW in nitrate acid

  • Shao Hua Jin*
  • , Bo Yang
  • , Jin Quan Liu
  • , Xiang Dong Lei
  • , Shu Sen Chen
  • *Corresponding author for this work
  • Beijing Institute of Technology
  • CASIC Beijing

Research output: Contribution to journalArticlepeer-review

Abstract

Solubility of hexanitrohexaazaisowurzitane (HNIW) and its changes with temperature in three kinds of different concentrations of nitric acid were measured. The process of crystal transition from α, γ-HNIW to ε-HNIW in nitrate acid was studied. ε-HNIW with different crystal quality were obtained by changing concentration of HNO3, temperature of adding crystal seeds, stirring rate. ε-HNIW is obtained in 90% nitric acid when the temperature of adding crystal seeds is in the range of 34-40°C. Its yield and purity is over 98%, 99% respectively, and acid number is below 2‰ (as HNO3).

Original languageEnglish
Pages (from-to)656-659
Number of pages4
JournalHanneng Cailiao/Chinese Journal of Energetic Materials
Volume15
Issue number6
Publication statusPublished - Dec 2007

Keywords

  • Applied chemistry
  • Crystal transition
  • Distribution of granularity
  • Hexanitrohexaazaisowurzitane (HNIW)
  • Solubility

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