Application of specific surface area and pore size distribution determination in industry

Battery industry

With the development of industrial technology, energy issues have become more and more the focus of social attention. The depletion of non-renewable energy and the environmental pollution caused by it have forced humans to find new alternative energy sources. Electric energy, especially energy storage batteries, is generally favored by people due to its low pollution and renewable characteristics. It is most likely to become an alternative energy source in the future and has broad development prospects. The key part of energy storage batteries - energy storage materials, due to its special requirements for energy storage, has very strict requirements on the specific surface area performance of materials. Too large or too small is not conducive to the performance of the battery. Therefore, the specific surface area becomes the most important physical performance indicator of electrode materials.

Chemical industry

Catalysts are required in many product production processes in the chemical industry, and the development of catalysts has a long history. With the development of material technology, the performance of catalysts has become more and more powerful. In addition to its chemical composition, the most important determining factors of the catalytic performance of materials are the size of their specific surface area and pore volume and their surface morphology. Catalytic materials generally have a large specific surface area and are porous materials. Both can increase the contact area between the catalyst and the reactant, thereby greatly improving the catalytic efficiency. The size of the specific surface area and pore volume is an important performance indicator to measure the performance of the catalyst.

Rubber industry

In the rubber industry, carbon black reinforcement is already a very mature technology and is widely used. At present, it has developed into a non-traditional single carbon black reinforcement. In recent years, many substitutes for ordinary carbon black have emerged, such as white carbon black. Studies have shown that in the carbon black reinforcement process, the external specific surface area of ​​the reinforcing agent excluding micropores has a very important influence on the reinforcement performance. Therefore, in the carbon black industry, it is usually necessary to measure the external specific surface area of ​​the reinforcing agent to measure its performance.

Construction industry

At present, China is in a period of great development in the construction industry, and high-quality buildings cannot be separated from high-quality cement. As a binder, the bonding performance of cement is closely related to the size of its specific surface area. Before the popularization of gas adsorption method, the early determination of cement specific surface area was determined by Blaine method, and the results of this determination method generally had large errors. With the improvement of cement production technology and the higher requirements for its quality in modern buildings, the results of Blaine method determination gradually cannot meet its accuracy requirements. It has become a general trend to use gas adsorption method with higher accuracy to determine the specific surface area of ​​cement.

With the continuous development of material technology, the performance measurement of specific surface area and porosity (pore volume) is also widely used in many other industries, such as electromagnetic materials, fluorescent materials, ceramics, powder metallurgy, adsorbents, cosmetics, food, etc. For granular materials, specific surface area has gradually become a physical property as important as particle size.