The pore size distribution (PSD) is an important property of the porous materials, but an accurate and reliable PSD is very difficult to obtain. Quenched Solid Density Functional Theory (QSDFT) is widely used to analyze the pore size distribution. Here, a series of unclosed and closed isotherms of activated carbon were measured and compared. The experimental results revealed the appearance of an artefact peak in the PSD for the unclosed isotherms by employing QSDFT equilibrium model. Moreover, the location of the artificial peak is highly related to the end point of the desorption branch. In addition, tensile strength effect (TSE) illustrates the limit of mechanical stability of liquids in pores, and subsequent cavitation generates an artefact peak at around 2.8 nm. Interestingly, it was found that isotherm data associated with TSE can be used to calculate the total pore volume of all large cavities in which cavitation occurs.

中文翻译：

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由未封闭的吸附等温线和拉伸强度效应引起的孔径分布伪影峰

孔径分布（PSD）是多孔材料的重要性质，但是很难获得准确和可靠的PSD。淬火固体密度泛函理论（QSDFT）被广泛用于分析孔径分布。在此，测量并比较了一系列未封闭和封闭的活性炭等温线。实验结果表明，采用QSDFT平衡模型，未封闭等温线的PSD中出现了伪像峰。此外，人工峰的位置与解吸分支的终点高度相关。此外，抗张强度效应（TSE）说明了液体在孔中的机械稳定性的极限，随后的空化作用在2.8 nm处产生了假象峰。有趣的是