Reference number
ISO 9277:2022
International Standard
ISO 9277:2022
Determination of the specific surface area of solids by gas adsorption — BET method
Edition 3
2022-11
Preview
ISO 9277:2022
71014
Indisponible en français
Publiée (Edition 3, 2022)

ISO 9277:2022

ISO 9277:2022
71014
Langue
Format
CHF 129
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Résumé

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.

Informations générales

  •  : Publiée
     : 2022-11
    : Norme internationale publiée [60.60]
  •  : 3
  • ISO/TC 24/SC 4
    19.120 
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