Absolute assessment of adsorption-based porous solid characterization methods: Comparison methods

Mark J. Biggs, Alex Buts, David Williamson

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

The design and use of microporous solids depends on having access to characteristics such as the pore volume and surface area. Comparison methods such as the αs method are one of the most widely used means of determining these parameters. An assessment of this group of methods was undertaken by comparing estimates obtained from them using adsorption isotherms generated by grand canonical Monte Carlo simulation on a selection of model nanoporous solids with exactly known surface areas and pore volumes. Conclusions are drawn from this absolute assessment in regard to the validity of the αs method for determining the micropore volume, the mesopore surface area, and the separation of pore groups based on the concept of primary and cooperative filling, the subtracting pore effect (SPE) method, and the required character of the reference surface.

Original languageEnglish
Pages (from-to)7123-7138
Number of pages16
JournalLangmuir
Volume20
Issue number17
DOIs
Publication statusPublished - 1 Aug 2004

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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