ISO 9277:2022

Determination of the specific surface area of solids by gas adsorption — BET method
Autor: ISO
Código ICS: 19.120


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.

Especificaciones de la Norma
Fecha de Publicación 08/11/2022
Título Secundario Détermination de l'aire massique (surface spécifique) des solides par adsorption de gaz — Méthode BET
Páginas Técnicas 22
Idioma Inglés