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Norm
ISO 9277:2022
Issue date: 2022 11 08
Determination of the specific surface area of solids by gas adsorption — BET method
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...
Valid
Publisher:
International Organization for Standardization
Format:
Digital | 22 Pages
Language:
English
ICS
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.
ISO 9277:2022
2022 11 08
Determination of the specific surface area of solids by gas adsorption — BET method
Norm
↖
ISO 9277:2010
2010 08 20
Determination of the specific surface area of solids by gas adsorption — BET method
Norm
ISO 9277:1995
1995 05 18
Determination of the specific surface area of solids by gas adsorption using the BET method
Norm
