Acta Phys. -Chim. Sin. ›› 1996, Vol. 12 ›› Issue (08): 766-768.doi: 10.3866/PKU.WHXB19960819

• Note • Previous Articles    

The Characterization of the Porous Structure of Expanded Graphite

Cao Nai-Zhen,Shen Wan-Ci,Wen Shi-Zhu   

  1. National Key Laboratory of Tribology,Tsinghua University,Beijing 100084
  • Received:1996-01-12 Revised:1996-05-27 Published:1996-08-15
  • Contact: Cao Nai-Zhen


N2 adsorption , mercury porosimetry and scanning electron microscope (SEM ) were chosen in this work to investigate the pore size distribution, pore shape, specific surface area and pore volume of expanded graphite, a new type of porous carbon material. The results showed that expanded graphite is dominated by middle and large sizes of wedge-pores with cross section of slit or polygon. It has a relatively medium specific surface area and may be suitab1e for adsorbing large molecules.

Key words: Expanded graphite, Porous structure, Characterization