标准编号：ISO 9277:2022
中文名称：用气体吸附测定固态物质比表面积 BET法
英文名称：Determination of the specific surface area of solids by gas adsorption — BET method
发布日期：2022-11
标准范围
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 [1] gas according to the method of Brunauer, Emmett and Teller method, based on the 2015 International [3] Union for Pure and Applied Chemistry (IUPAC) recommendations .
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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