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ISO 9277:2022

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Abstract

This document specifies the determination of the overall specific external and internal surface area of either disperse (e.g. nano-powders) or porous, solids by measuring the amount of physically adsorbed gas according to the method of Brunauer, Emmett and Teller method,[1] based on the 2015 International Union for Pure and Applied Chemistry (IUPAC) recommendations[3]. NOTE       For solids exhibiting a chemically heterogeneous surface, for example, metal-carrying catalyst, the BET method gives the overall surface area, whereas the metallic portion of the surface area can be measured by chemisorption methods.

Document information

  • Standard from ISO
  • Published:
  • Edition: 3
  • Version: 1
  • Document type: IS
  • ICS 19.120
  • ISO TC ISO/TC 24/SC 4

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