本文提出了一个在固体表面上20℃时苯吸附层厚(t)随相对压力p/p_s改变的Halsey方程,t=t_m×1.208(lnps/p)_(-2/3)其中t_m为苯吸附单分子层的厚度,t_m=3.69(埃)。应用此经验方程,按DH法给出了苯吸附测定多孔物质孔分布(圆柱孔模型)的计算模式,其应用范围为15(埃)<γ<300(埃)。应用本法进行了硅酸铝微球、活性炭等样品的计算,并与氮吸附法进行了比较。 This paper presents a Halsey equation for the change of benzene adsorption layer thickness (t) with relative pressure p / p_s at 20 ° C on a solid surface, where t_m is benzene The thickness of the adsorbed monolayer, tm = 3.69 (angstroms). Using this empirical equation, the calculation model for the pore distribution of porous material (cylindrical pore model) for benzene adsorption was given by DH method. The range of application is 15 (Å) <γ <300 (Å). This method was used to calculate the samples of aluminum silicate microspheres and activated carbon, and compared with the nitrogen adsorption method.