Acoustic Emission Analysis (AEA) for textural characterization of granular activated carbons (GACs) is an interesting alternative for assessing the GAC volume of pores in a rapid, sensitive and reliable way. Correlations between AEA and conventional methods have demonstrated its potentialities for textural characterization of high-porosity materials. In this study, commercial GACs with different porous characteristics were compared and correlated by applying volumetric gas sorption (N₂ at 77 K, CO₂ at 273 K), Hg porosimetry and AEA. The energy, amplitude and power of the acoustic signal produced during GAC immersion in water are used as parameters to correlate with textural characteristics of the carbons. The found relationship between conventional porosity assessment techniques and acoustic parameters demonstrated the potentialities of the acoustic method as complementary technique of exploring textural properties of high-porosity materials.

用于以颗粒状活性炭（GAC）进行结构表征的声发射分析（AEA）是一种以快速，灵敏和可靠的方式评估孔的GAC体积的有趣替代方法。AEA与常规方法之间的相关性已经证明了其在高孔隙率材料的结构表征方面的潜力。在这项研究中，用不同的多孔特性的商品GACS进行比较并通过应用体积气体吸附（N个相关的₂在77 K，CO ₂在273 K），Hg孔隙率法和AEA。GAC浸入水中时产生的声信号的能量，幅度和功率被用作与碳的纹理特征相关的参数。常规孔隙率评估技术与声学参数之间的发现关系证明了声学方法作为探索高孔隙率材料纹理特性的补充技术的潜力。