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本文用色谱保留值来测定固体的比表面积。结果表明,这种方法的操作简便,设备简单,与ST-03比表面测定仪所得的结果比较偏差约±5％,是一种便于推广的常规测定方法。并用此法得出了新近开发出的腾冲硅藻土的比表面、吸附等温线,进而求出了腾冲硅藻土的微孔孔径分布曲线。
This article uses the chromatographic retention value to determine the specific surface area of the solid. The results show that this method is simple and easy to operate with simple equipment. It is about ± 5% deviation from the result obtained by ST-03 surface analyzer, which is a convenient method for generalization. The specific surface area and adsorption isotherm of the newly developed Tengchong diatomite were obtained by this method, and then the micropore pore size distribution curve of Tengchong diatomite was obtained.