化学工业和石油化学工业中用的固体催化剂、吸附剂都是些多孔固体物质,它们的表面积和孔性往往直接影响于其上进行的物理化学过程,所以在许多生产和科研中经常遇到比表面(每克固体物质所具有的表面积)和孔径分布的测定与计算问题。过去测定比表面和孔分布较为准确的方法是经典的BET静态法,但该法设备安装麻烦、操作繁复,且要使用大量的汞、不 The solid catalysts and adsorbents used in the chemical industry and the petrochemical industry are porous solid materials whose surface area and porosity often have a direct impact on the physicochemical processes carried out thereon and are therefore often encountered in many production and scientific research Surface (surface area per gram of solid material) and pore size distribution and measurement problems. In the past, the more accurate method of determining specific surface area and pore distribution was the classic BET static method, but the method was cumbersome to install, complicated to operate and used a large amount of mercury, not