Journal of Inorganic Materials

• Research Paper • Previous Articles     Next Articles

Preparation of Sulfur-free and Expandable Graphite by Using Mixing Acid

SONG Kemin1, LIU Jinpeng2, DUN Huijuan3   

  1. 1Dep. of Basic Curse, Hebei Agriculture University Baoding 071001 China; 2Hebei Institute of Chemical Technology and Light Industry Shijiazhuang 050018 China; 3Hebei Normal University Shijiazhuang 050016 China
  • Received:1996-08-12 Revised:1996-10-04 Published:1997-08-20 Online:1997-08-20

Abstract: Sulfur-free and expanable graphite was prepared by reacting of natural flake graphite with concentrated nitric acid and acetic acid using potassium permanganate as oxidant at 30℃. The best conditions of the preparation were screened out. The method of Mass Spectrum was utilized to analyze the expandable graphite.

Key words: sulfur-ferr and expandable graphite, preparation, acetic acie, concentrated nitric acid