Standard

ISO 9277:2022

Publisert
Forhåndsvisning

Rettelser og tillegg kjøpes separat.

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Omfang

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.

Dokumentinformasjon

  • Standard fra ISO
  • Publisert:
  • Utgave: 3
  • Versjon: 1
  • Varetype: IS
  • ICS 19.120
  • ISO TC ISO/TC 24/SC 4

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