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Citation: ZHANG Jianhui, CHEN Xiaojuan, YU Xiaolan, ZHANG Weiqing. Screening, Processing and Checking of BET Test Data[J]. University Chemistry, ;2019, 34(3): 53-59. doi: 10.3866/PKU.DXHX201807015 shu

Screening, Processing and Checking of BET Test Data

School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China

Received Date: 9 July 2018

The classic BET test is applicable to mesoporous and nonporous materials, and the relative pressure (p/p₀) range is 0.05-0.3. Currently, BET is also used to characterize the substances containing microspores. The relative pressure range is 0.005-0.3. The large amount data need to be screened to find out the data that conform to the BET model. Some of the latest software provided by the instrumental company have very convenient auxiliary screening function, which is written based on Rouquerol transform method. We tried to find out the mathematical deduction process of this method. Then, according to the literature and the testing experience by many individuals, we summed up the 5 steps of BET data processing. The entire process can be realized on the Origin software. It is suitable for the data screening, processing and checking of all volumetric BET methods.
- BET test,
- Rouquerol transform,
- Data screening,
- Origin software
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