Reference number
ISO 9277:2022
International Standard
ISO 9277:2022
Determination of the specific surface area of solids by gas adsorption — BET method
Edition 3
2022-11
Preview
ISO 9277:2022
71014
No disponible en español
Publicado (Edición 3, 2022)

ISO 9277:2022

ISO 9277:2022
71014
Idioma
Formato
CHF 129
Convertir Franco suizo (CHF) a tu moneda

Resumen

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.

Informaciones generales

  •  : Publicado
     : 2022-11
    : Norma Internacional publicada [60.60]
  •  : 3
     : 22
  • ISO/TC 24/SC 4
    19.120 
  • RSS actualizaciones

¿Tiene alguna duda?

Consulte nuestras Ayuda y asistencia