On May 31, "How to accurately measure pore size?" held by the Magnetic Resonance Laboratory of Tsinghua University Analysis Center. The lecture series was officially opened, and Xia Pan, General Manager of State Instrument Precision Measurement, shared the report of "Key points of accurate determination of material pore size and analysis of testing examples", and nearly 60 researchers in related fields attended and exchanged in-depth exchanges offline and online.


Off-line venue of the seminar


       Prof. Yang Haijun pointed out that the pore structure of materials directly affects the performance of materials, and the precise measurement of material pore size is widely used in many disciplines and industries. The lecture series will focus on the theme of "How to accurately measure pores" and invite experts in related fields to continue to share different methods of pore analysis.



 Prof. Yang Haijun, Department of Chemistry, Tsinghua University


       Xia Pan from CIQTEK said in his report that the principle of low-temperature nitrogen adsorption for specific surface area and pore size analysis is a commonly used test method in the international arena, with mature theoretical support and perfect standard guidance. In the actual testing process, the testing requirements are different for different types of materials and different pore size ranges. Combining with a variety of gas adsorption analysis instruments independently developed by CIQTEK, he explained in his report the analysis and testing for different types of ultramicroporous, microporous and mesoporous. In particular, he shared in detail about the pore size analysis of ultra-microporous and microporous materials, which are increasingly widely used, from the selection of instruments to the setting of parameters in the testing process, the selection of models for test data analysis and the interpretation of test results, especially the pore size analysis of ultra-microporous materials with pore size less than 0.7 nm.



CIQTEK General Manager Xia Pan


       Recently, the  EASY-V 1440, a high-performance microporous analyzer, was officially delivered to Tsinghua University Analysis Center. Xia Pan introduced that this instrument focuses on the surface characterization of microporous materials. Based on the stainless steel pipeline, the device has a breakthrough design of VCR metal surface sealed sample tube, which improves the overall sealing during the flow of gas pipeline and has the advantages of long time vacuum retention, ultra-low partial pressure ratio, constant temperature control and multiple fluxes. It can be widely used in environmental protection, fuel cell, pharmaceutical and catalytic industries, and is especially suitable for researchers who have higher requirements for microporous and ultra-microporous analysis. After the presentation, Mr. Yang and Mr. Xia had an in-depth discussion with the guests on site and online about various pore sizes and testing techniques.



CIQTEK EASY-V 1440, a high-performance microporous analyzer at Tsinghua University Analysis Center