DIN Standards Committee Building and Civil Engineering
Determination of the specific surface area of solids by gas adsorption - BET method (ISO 9277:2022)
Abstract
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.
Begin
2023-05-31
Planned document number
DIN ISO 9277
Project number
00519579
Responsible national committee
Responsible international committee
ISO/TC 24/SC 4/WG 3 - Pore size distribution, porosity
draft standard
Determination of the specific surface area of solids by gas adsorption - BET method (ISO 9277:2022)
Order from DIN Media
previous edition(s)
Determination of the specific surface area of solids by gas adsorption - BET method (ISO 9277:2010)
2014-01
