A Comparative Study of the Suitability of Sircar's and BET Isotherms to Study the Adsorption of Vapours on Non-Porous Adsorbents
A comparative study is reported of the suitability of the BET and Sircar equations for the analysis of the adsorption isotherms of vapours on non-porous solids, by applying both equations to experimental data reported in the literature corresponding to the adsorption of nitrogen at 77 K on a non-por...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
SAGE Publications
1989-09-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1177/026361748900600301 |
| Summary: | A comparative study is reported of the suitability of the BET and Sircar equations for the analysis of the adsorption isotherms of vapours on non-porous solids, by applying both equations to experimental data reported in the literature corresponding to the adsorption of nitrogen at 77 K on a non-porous carbon-coated silica. It is concluded that Sircar's method, despite its greater mathematical complexity, does not provide better precision in determining the parameters of the equation. In addition, the monolayer capacity values are very different in both cases. The BET equation remains the more reliable for the determination of the monolayer adsorption capacity of solids. |
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| ISSN: | 0263-6174 2048-4038 |