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1958年,Nelsen 和 Eggertsen 提出了热解吸色谱方法(连续流动色谱法),至今已成为一种通用的测量比表面积的方法。目前,国内外都已有多种采用此法的比表面积测定仪出现。1975年我国研究工作者提出了一种以纯氦气为载气的热解吸色谱法(双气路法),可以在常压下测定等温吸附线的全过程,从而可以测定固体物质的比表面、比孔体积和孔径分布,并以此流程为基础,研制成功了 ST—03型表面与孔径测定仪。
In 1958, Nelsen and Eggertsen proposed thermal desorption chromatography (continuous flow chromatography), which has so far become a versatile method of measuring specific surface area. At present, there are many kinds of specific surface area analyzers that adopt this method both at home and abroad. In 1975, Chinese researchers proposed a thermal desorption chromatography (double gas method) using pure helium as the carrier gas. The whole process of the isothermal adsorption line can be measured under normal pressure so that the specific surface area of the solid material can be measured , Than the pore volume and pore size distribution, and based on this process, the successful development of the ST-03 surface and aperture detector.