• AYUSHI SINGH

Articles written in Bulletin of Materials Science

• Investigation of methane adsorption onto metal–organic frameworks under subcritical condition employing adsorption isotherm models

Analysis of methane (CH4) adsorption isotherms for metal–organic framework (MOF) adsorbents in the subcritical regions has been reported in this article. In this study, virgin MIL-101-(Cr) MOF, which is doped with alkali ions, are used to comprehend the influence of alkali dopants on CH$_4$ sorption behaviour. MIL-101-(Cr) MOF and its derivatives with alkali ion dopants were prepared by the benign hydrothermal synthesis route, which was characterized bypowder X-ray diffraction method. The equilibrium uptakes of CH$_4$ under the subcritical condition were evaluated by fitting the isotherms with Langmuir, Toth and Dubinin–Astakohv adsorption models to determine the adsorption parameters. The adsorption parameters were correlated with the surface-induced heterogeneity, which can be attributed to the introduction of alkali dopants in the MOF structure. It is apparent from the analysis that the isosteric heat of adsorption diminishes with increasing alkali dopant size, while the induced surface structural heterogeneity increases with increasing alkali dopant size.

• Bulletin of Materials Science

Volume 46, 2023
All articles
Continuous Article Publishing mode

• Dr Shanti Swarup Bhatnagar for Science and Technology

Posted on October 12, 2020

Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020