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多孔性物质比表面的測定,对于研究催化反应等方面是一个重要問題。在实驗方法上,采用动态吸附法是比較方便易行的。廖振江曾介紹过鲁宾什捷英等提出的实驗设备、仪器及操作。为了簡化实驗手续,减少計算时間,在我们的实驗中采用了一点法的办法。这样,对于一个样品,只要测出一个吸附量数据,卽可計算出比表面的大小。为了简化計算手續,又将計算中諸公式作成算图,只要几分钟卽可得到此表面的数据。一、用一点法求比表面利用日B.E.T.二常数等温式所得直线,截距一般
Determination of specific surface area of porous material, for the study of catalytic reactions and so is an important issue. In the experimental method, the use of dynamic adsorption method is more convenient and easy. Liao Zhenjiang had introduced the experimental equipment, instruments and operations proposed by Rubin Shijie. In order to simplify the experimental procedure and reduce the calculation time, a little method was adopted in our experiment. Thus, for a sample, as long as a measurement of the amount of adsorption data, 卽 can be calculated than the size of the surface. In order to simplify the calculation procedure, the formulas in the calculation are also calculated, and the data of the surface can be obtained in only a few minutes. First, with a little law to find the surface than the use of B.E.T. Second constant isotherm derived from the line, the general intercept