Why is Kr used for low specific surface area evaluation?
Can low specific surface area be measured using Kr? The adsorption cross-sectional area of Kr (0.202 nm²) is 25% larger than that of N2 (0.162 nm²), making it unsuitable for measuring low specific surface area. The reason lies in the adsorption temperature and vapor pressure. In the constant volume method, the amount of gas adsorbed is calculated from the difference between the amount of gas introduced and the amount of gas that was not adsorbed. We provide detailed information on our website. Please take a look. *For more details, please refer to the related links or feel free to contact us.*
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