Experimental Evidence for Pore Blocking as the Mechanism for Nitrogen Sorption Hysteresis in a Mesoporous Material

Sean P Rigby, Robin S Fletcher

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30 Citations (Scopus)

Abstract

The theory of "pore blocking" is often used, particularly in combination with percolation theory, to develop methods of anal. for gas sorption data for the structural characterization of porous media. However, the evidence for the existence of the pore-blocking effect is conflicting and equivocal. In the work described here mercury porosimetry expts. were integrated with gas sorption to detect the existence of pore-blocking effects during the desorption of nitrogen from a mesoporous sol-gel silica material at 77 K. [on SciFinder (R)]
Original languageEnglish
Pages (from-to)4690-4695
Number of pages6
JournalJournal of Physical Chemistry B
Volume108
Issue number15
Publication statusPublished - 2004

Keywords

  • Desorption
  • pore blocking desorption nitrogen mesoporous silica mercury porosimetry
  • Pore (pore blocking during desorption of nitrogen from mesoporous silica studied using mercury porosimetry)
  • Porous materials (mesoporous
  • pore blocking during desorption of nitrogen from mesoporous silica studied using mercury porosimetry)

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