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本文提出了一种新的计算多孔固体比表面积的方法。这个方法是根据氮气的脱附等温线求出单分子层饱和吸附量(V_m),然后求出比表面积(S_o)。用该方法的计算结果与用BET方法计算的结果相对误差很小。由于推导该方法需要的假设和近似比BET方程少,所以尤其在多孔固体的表面积测定中显示出它的结果正确性和优越性。
This paper presents a new method to calculate the specific surface area of porous solid. This method is based on nitrogen desorption isotherm to obtain saturated monolayer adsorption capacity (V_m), and then determine the specific surface area (S_o). The result of this method is relatively less error than the result of the BET method. Since the assumptions and approximations needed to derive this method are less than those of the BET equation, its accuracy and superiority of results have been shown, especially in the determination of the surface area of porous solids.