Innovative Strategy for Truly Reversible Capture of Polluting Gases—Application to Carbon Dioxide
This paper consists of a deep analysis and data comparison of the main strategies undertaken for achieving truly reversible capture of carbon dioxide involving optimized gas uptakes while affording weakest retention strength. So far, most strategies failed because the estimated amount of CO<sub&l...
Ausführliche Beschreibung
Autor*in: |
Abdelkrim Azzouz [verfasserIn] René Roy [verfasserIn] |
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E-Artikel |
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Sprache: |
Englisch |
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2023 |
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Übergeordnetes Werk: |
In: International Journal of Molecular Sciences - MDPI AG, 2003, 24(2023), 22, p 16463 |
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Übergeordnetes Werk: |
volume:24 ; year:2023 ; number:22, p 16463 |
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Link aufrufen |
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DOI / URN: |
10.3390/ijms242216463 |
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Katalog-ID: |
DOAJ101233752 |
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Innovative Strategy for Truly Reversible Capture of Polluting Gases—Application to Carbon Dioxide |
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This paper consists of a deep analysis and data comparison of the main strategies undertaken for achieving truly reversible capture of carbon dioxide involving optimized gas uptakes while affording weakest retention strength. So far, most strategies failed because the estimated amount of CO<sub<2</sub< produced by equivalent energy was higher than that captured. A more viable and sustainable approach in the present context of a persistent fossil fuel-dependent economy should be based on a judicious compromise between effective CO<sub<2</sub< capture with lowest energy for adsorbent regeneration. The most relevant example is that of so-called promising technologies based on amino adsorbents which unavoidably require thermal regeneration. In contrast, OH-functionalized adsorbents barely reach satisfactory CO<sub<2</sub< uptakes but act as breathing surfaces affording easy gas release even under ambient conditions or in CO<sub<2</sub<-free atmospheres. Between these two opposite approaches, there should exist smart approaches to tailor CO<sub<2</sub< retention strength even at the expense of the gas uptake. Among these, incorporation of zero-valent metal and/or OH-enriched amines or amine-enriched polyol species are probably the most promising. The main findings provided by the literature are herein deeply and systematically analysed for highlighting the main criteria that allow for designing ideal CO<sub<2</sub< adsorbent properties. |
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This paper consists of a deep analysis and data comparison of the main strategies undertaken for achieving truly reversible capture of carbon dioxide involving optimized gas uptakes while affording weakest retention strength. So far, most strategies failed because the estimated amount of CO<sub<2</sub< produced by equivalent energy was higher than that captured. A more viable and sustainable approach in the present context of a persistent fossil fuel-dependent economy should be based on a judicious compromise between effective CO<sub<2</sub< capture with lowest energy for adsorbent regeneration. The most relevant example is that of so-called promising technologies based on amino adsorbents which unavoidably require thermal regeneration. In contrast, OH-functionalized adsorbents barely reach satisfactory CO<sub<2</sub< uptakes but act as breathing surfaces affording easy gas release even under ambient conditions or in CO<sub<2</sub<-free atmospheres. Between these two opposite approaches, there should exist smart approaches to tailor CO<sub<2</sub< retention strength even at the expense of the gas uptake. Among these, incorporation of zero-valent metal and/or OH-enriched amines or amine-enriched polyol species are probably the most promising. The main findings provided by the literature are herein deeply and systematically analysed for highlighting the main criteria that allow for designing ideal CO<sub<2</sub< adsorbent properties. |
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This paper consists of a deep analysis and data comparison of the main strategies undertaken for achieving truly reversible capture of carbon dioxide involving optimized gas uptakes while affording weakest retention strength. So far, most strategies failed because the estimated amount of CO<sub<2</sub< produced by equivalent energy was higher than that captured. A more viable and sustainable approach in the present context of a persistent fossil fuel-dependent economy should be based on a judicious compromise between effective CO<sub<2</sub< capture with lowest energy for adsorbent regeneration. The most relevant example is that of so-called promising technologies based on amino adsorbents which unavoidably require thermal regeneration. In contrast, OH-functionalized adsorbents barely reach satisfactory CO<sub<2</sub< uptakes but act as breathing surfaces affording easy gas release even under ambient conditions or in CO<sub<2</sub<-free atmospheres. Between these two opposite approaches, there should exist smart approaches to tailor CO<sub<2</sub< retention strength even at the expense of the gas uptake. Among these, incorporation of zero-valent metal and/or OH-enriched amines or amine-enriched polyol species are probably the most promising. The main findings provided by the literature are herein deeply and systematically analysed for highlighting the main criteria that allow for designing ideal CO<sub<2</sub< adsorbent properties. |
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Among these, incorporation of zero-valent metal and/or OH-enriched amines or amine-enriched polyol species are probably the most promising. 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