Insights of the adsorbents surface chemical properties effect on water adsorption isotherms
The usage of metal organic frameworks (MOFs) as adsorbent materials for adsorption-based heat transformation applications is gaining popularity among the research society due to their S-shaped water adsorption isotherms. Apart from the S-shaped isotherms, there are other two key features that need t...
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sg-ntu-dr.10356-1637422022-12-15T07:32:32Z Insights of the adsorbents surface chemical properties effect on water adsorption isotherms Rupam, Tahmid Hasan Palash, M. L. Chakraborty, Anutosh Saha, Bidyut Baran School of Mechanical and Aerospace Engineering Engineering::Mechanical engineering Adsorption Heat Transformation Aluminum Fumarate The usage of metal organic frameworks (MOFs) as adsorbent materials for adsorption-based heat transformation applications is gaining popularity among the research society due to their S-shaped water adsorption isotherms. Apart from the S-shaped isotherms, there are other two key features that need to be kept in mind when working with MOF/water pair, namely the equilibrium uptake and the hydrophobic length of the water adsorption isotherms. Therefore, in this study, three different metal organic frameworks, namely MOF–801, aluminum fumarate, and MIL–100(Fe), are synthesized, and water adsorption onto these adsorbents is measured thermogravimetrically. Utilizing the four-step temperature swing adsorption process, the entropy generation in each step is calculated for each pair. Surface properties of the MOFs are measured using the inverse gas chromatography method. We explicitly demonstrated the relation between surface energy components of the adsorbents and their respective water adsorption isotherms. It has been found that the equilibrium uptake is proportional to the surfaces’ work of adhesions, while the hydrophobic length shows a relation with the surface acid-base properties. This information is crucial for designing an optimum MOF adsorbent for an efficient adsorption-based heat transformation application. 2022-12-15T07:32:32Z 2022-12-15T07:32:32Z 2022 Journal Article Rupam, T. H., Palash, M. L., Chakraborty, A. & Saha, B. B. (2022). Insights of the adsorbents surface chemical properties effect on water adsorption isotherms. International Journal of Heat and Mass Transfer, 192, 122842-. https://dx.doi.org/10.1016/j.ijheatmasstransfer.2022.122842 0017-9310 https://hdl.handle.net/10356/163742 10.1016/j.ijheatmasstransfer.2022.122842 2-s2.0-85127796296 192 122842 en International Journal of Heat and Mass Transfer © 2022 Elsevier Ltd. All rights reserved. |
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Engineering::Mechanical engineering Adsorption Heat Transformation Aluminum Fumarate Rupam, Tahmid Hasan Palash, M. L. Chakraborty, Anutosh Saha, Bidyut Baran Insights of the adsorbents surface chemical properties effect on water adsorption isotherms |
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The usage of metal organic frameworks (MOFs) as adsorbent materials for adsorption-based heat transformation applications is gaining popularity among the research society due to their S-shaped water adsorption isotherms. Apart from the S-shaped isotherms, there are other two key features that need to be kept in mind when working with MOF/water pair, namely the equilibrium uptake and the hydrophobic length of the water adsorption isotherms. Therefore, in this study, three different metal organic frameworks, namely MOF–801, aluminum fumarate, and MIL–100(Fe), are synthesized, and water adsorption onto these adsorbents is measured thermogravimetrically. Utilizing the four-step temperature swing adsorption process, the entropy generation in each step is calculated for each pair. Surface properties of the MOFs are measured using the inverse gas chromatography method. We explicitly demonstrated the relation between surface energy components of the adsorbents and their respective water adsorption isotherms. It has been found that the equilibrium uptake is proportional to the surfaces’ work of adhesions, while the hydrophobic length shows a relation with the surface acid-base properties. This information is crucial for designing an optimum MOF adsorbent for an efficient adsorption-based heat transformation application. |
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School of Mechanical and Aerospace Engineering |
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School of Mechanical and Aerospace Engineering Rupam, Tahmid Hasan Palash, M. L. Chakraborty, Anutosh Saha, Bidyut Baran |
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Article |
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Rupam, Tahmid Hasan Palash, M. L. Chakraborty, Anutosh Saha, Bidyut Baran |
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Rupam, Tahmid Hasan |
title |
Insights of the adsorbents surface chemical properties effect on water adsorption isotherms |
title_short |
Insights of the adsorbents surface chemical properties effect on water adsorption isotherms |
title_full |
Insights of the adsorbents surface chemical properties effect on water adsorption isotherms |
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Insights of the adsorbents surface chemical properties effect on water adsorption isotherms |
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Insights of the adsorbents surface chemical properties effect on water adsorption isotherms |
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insights of the adsorbents surface chemical properties effect on water adsorption isotherms |
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2022 |
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https://hdl.handle.net/10356/163742 |
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