标准摘要
[中文适用范围]: 本国际标准提供了根据 Brunauer、Emmet 和 Teller 的方法通过测量物理吸附气体量来测定分散或多孔(孔径 > 2 nm)精细陶瓷材料的总比外表面积和内比表面积的指南( BET法)[1]。 ISO 9277 中描述了该方法的一般准则。 该国际标准仅关注与精细陶瓷材料相关的具体细节。 还应该注意的是,BET 方法不能应用于 I 型等温线(微孔材料或化学吸附行为)或当固体吸收测量气体时。 注:有关这些主题的更多详细信息,请参阅 IUPAC 参考文献 [2]、[3] 或 Gregg 和 Sing 的教科书 [4]。 [外文原描述]: ISO 18757:2003 provides guidelines for the determination of the total specific external and internal surface area of disperse or porous (pore diameter greater than 2 nm) fine ceramic materials by measuring the amount of physically adsorbed gas according to the method of Brunauer, Emmett and Teller (BET method). This International Standard only focuses on specific details relevant to fine ceramic materials. It should further be noted that the BET method cannot be applied to type I isotherms (microporous materials or chemisorption behaviour) or when the solid adsorbs the measuring gas.
英文名称Fine ceramics (advanced ceramics, advanced technical ceramics) — Determination of specific surface area of ceramic powders by gas adsorption using the BET method