Chapter 8. Comparison of Surface Areas Calculated from Nitrogen Adsorption and Mercury Porosimetry

  1. John B. Wachtman Jr.
  1. Diane R. Milburn and
  2. Burtron H. Davis

Published Online: 26 MAR 2008

DOI: 10.1002/9780470314272.ch8

A Collection of Papers on Engineering Aspects of Fabrication of Ceramics: Ceramic Engineering and Science Proceedings, Volume 14, Issue 11/12

A Collection of Papers on Engineering Aspects of Fabrication of Ceramics: Ceramic Engineering and Science Proceedings, Volume 14, Issue 11/12

How to Cite

Milburn, D. R. and Davis, B. H. (1993) Comparison of Surface Areas Calculated from Nitrogen Adsorption and Mercury Porosimetry, in A Collection of Papers on Engineering Aspects of Fabrication of Ceramics: Ceramic Engineering and Science Proceedings, Volume 14, Issue 11/12 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470314272.ch8

Author Information

  1. Center for Applied Energy, Research Laboratory, Lexington, KY 40511-8433

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1993

ISBN Information

Print ISBN: 9780470375280

Online ISBN: 9780470314272

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Keywords:

  • porosimetry;
  • physisorption;
  • isotherms;
  • nitrogen;
  • mesopores

Summary

A variety of samples with BET surface areas ranging from 1 m2/g to 760 m2/g has been examined to compare surface area calculated from nitrogen adsorption and mercury porosimetry measurements. The techniques provide comparable results with a ratio of Hg-derived surface area to N2-derived surface area, r, approximately equal to one for a specific range of BET surface areas. At BET surface areas greater than 100 m2/g or less than 10 m2/g, r frequently deviates significantly from one and factors such as particle packing and pore shape must be taken into account when comparing results from the two techniques.