Résumé
PrévisualiserThis 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.
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État actuel: PubliéeDate de publication: 2022-11
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Edition: 3
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- ICS :
- 19.120 Analyse dimensionnelle des particules. Tamisage
Acheter cette norme
fr
| Format | Langue | |
|---|---|---|
| std 1 124 | PDF + ePub | |
| std 2 124 | Papier |
- CHF124
Cycle de vie
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Précédemment
AnnuléeISO 9277:2010
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Actuellement
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