NBN ISO 9277:2023

NBN ISO 9277:2023

Determination of the specific surface area of solids by gas adsorption — BET method ISO 9277:2022

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Détails

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.


Directives : Not yet available in DB

Informations supplémentaires

Auteur Bureau de Normalisation Belge (NBN)
Edité par NBN
Type de document Norme
ICS 19.120 : Analyse dimensionnelle des particules. tamisage
Historique No
Mot-clé ISO 9277, ISO 9277:2023