Recent advances in development of amine functionalized adsorbents for CO2 capture

Gelles, Teresa; Lawson, Shane; Rownaghi, Ali A.; Rezaei, Fateme

doi:10.1007/s10450-019-00151-0

Cited by 116 publications

(80 citation statements)

References 306 publications

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“…To overcome such issues, supported amine sorbents are being explored as potential candidates for post-combustion carbon capture from a wet flue gas. These adsorbents have amine moieties grafted in silica or carbon substrates and are known to exhibit high CO 2 capacities in the presence of water [25][26][27][28][29][30][31]. Although these adsorbents are well known to the scientific community for quite some time now, few knowledge gaps still exist.…”

Section: Introductionmentioning

confidence: 99%

Screening Supported Amine Sorbents in the Context of Post‐combustion Carbon Capture by Vacuum Swing Adsorption

Krishnamurthy

Boon

Grande

et al. 2021

Chemie Ingenieur Technik

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The aim of this work was to evaluate the performance of three different supported amine sorbents in a 6-step vacuum swing adsorption (VSA) cycle through process simulation and optimization for a representative post-combustion CO 2 capture system. Detailed process optimization revealed that all the adsorbents were able to achieve the desired purityrecovery targets. The best performing adsorbent in terms of productivity was Lewatit with a productivity of 0.48 mol m -3 ads s -1 . All the adsorbents exhibited similar minimum specific energy value of around 1 MJ kg -1 on an electric basis.

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Section: Introductionmentioning

confidence: 99%

Screening Supported Amine Sorbents in the Context of Post‐combustion Carbon Capture by Vacuum Swing Adsorption

Krishnamurthy

Boon

Grande

et al. 2021

Chemie Ingenieur Technik

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“…Many reactions involving amines and CO 2 have been performed in water, where the competition between the formation of the carbamato species and that of carbonate/bicarbonate anions must be taken into account ( Scheme 2 ). Despite this complication, kinetic and thermodynamic aspects have been widely investigated [ 35 , 50 , 51 ], also in view of the search for optimal substrates and conditions for industrial CO 2 capture.…”

Section: The Reactivity Of Carbon Dioxide With Amines and Other mentioning

confidence: 99%

“…Thus, a range of nucleophilic reagents, including neutral N -heterocyclic carbenes [ 25 , 26 ], are known to react with CO 2 even under mild conditions, and some chemistry at transition metal centers is provided by the possibility of CO 2 insertion into the bond between a metal atom and a suitable anionic ligand, e.g., alkyl, allyl, alkoxide and hydride [ 27 , 28 , 29 , 30 , 31 , 32 ]. In this context, amines are key reactants towards carbon dioxide, and indeed carbon dioxide/amine systems have been intensively investigated in the field of capture/storage [ 33 , 34 , 35 ] and exploited for the incorporation of the CO 2 moiety within organic structures [ 36 , 37 , 38 , 39 ]. Furthermore, CO 2 is also prone to insertion reactions into a variety of metal-amide bonds, generating a carbamato ligand; however, metal complexes containing carbamato ligands are easily available through diverse synthetic routes not requiring the use of pressurized CO 2 .…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in the Chemistry of Metal Carbamates

et al. 2020

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Following a related review dating back to 2003, the present review discusses in detail the various synthetic, structural and reactivity aspects of metal species containing one or more carbamato ligands, representing a large family of compounds across all the periodic table. A preliminary overview is provided on the reactivity of carbon dioxide with amines, and emphasis is given to recent findings concerning applications in various fields.

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“…However, these adsorbents suffer from inferior capture capacities compared to aqueous amine‐scrubbing, as well as reduced working capacities in humidified conditions . Therefore, recent research has focused on the incorporation of amine moieties onto the adsorbents aiming at enhancing the CO 2 capture capacity and selectivity of these materials …”

Section: Introductionmentioning

confidence: 99%

Diffusion kinetics of CO₂ in amine‐impregnated MIL‐101, alumina, and silica adsorbents

Gelles

Rezaei

2019

AIChE Journal

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CO 2 sorption kinetics of poly(ethylenimine) (PEI)-impregnated MIL-101, γ-alumina, and UVM-7 silica were investigated by the zero-length column technique for the purpose of understanding the effect of amine content, adsorbent porosity, and adsorption temperature on CO 2 sorption rates. Each of the adsorbents was impregnated with three different amine contents (20, 35, and 50 wt%) and the effective diffusion time constants were determined at 25 C. For each respective adsorbent, it was found that increasing the amine content results in diminished diffusion rates. Additionally, it was found that the pore size of the support has a profound effect on diffusional kinetics, where microporous MIL-101 yielded substantially slow desorption rates upon amine-functionalization compared to mesoporous γ-alumina. PEIimpregnated UVM-7 silica was further investigated at 50 and 75 C in order to provide insight into the effect of temperature on sorption kinetics. The results indicated that PEI-impregnated UVM-7 exhibited faster sorption kinetics at higher temperatures. Upon desorption, PEI-UVM-7 silica exhibited two distinct regions of masstransfer control that occur at different sorption times. This is best explained by first the occurrence of surface diffusion followed by diffusion out of the bulky PEI polymer chains. The findings of this study provide novel kinetic characterizations on promising amino-adsorbents for carbon capture applications. K E Y W O R D S γ-alumina, CO 2 capture, diffusion time constant, MIL-101, UVM-7 silica, ZLC technique 1 | INTRODUCTION The rapid rise of anthropogenic CO 2 emissions resulting from fossil fuel combustion has been widely identified as the primary cause to the increase in global temperatures, due to the deleterious effects of this greenhouse gas. 1 Hence, development of cost-effective carbon capture processes is essential for mitigation of CO 2 emissions. 1-4 Aqueous monoethanol amine absorption is regarded as the benchmark technology for post-combustion CO 2 capture, but suffers from high-energy penalties upon solvent regeneration. 3 Alternatively, the direct removal of CO 2 from ambient air has arisen as an attractive option in recent years that could be implemented in residential areas to mitigate emissions resulting from transportation sources. 4,5 Therefore, solid-state adsorbents have been intensively studied as a viable, cost-effective alternative to absorption-based amine scrubbing for practical carbon capture applications. Solid adsorbents, traditionally including zeolites, carbon molecular sieves, activated carbons, activated alumina, and metal-organic frameworks (MOFs), are physical adsorbents and have been extensively studied due to their high efficiency, low regeneration requirements, and long-term stability. 6 However, these adsorbents suffer from inferior capture capacities compared to aqueous amine-scrubbing, as well as reduced working capacities in humidified conditions. 7 Therefore, recent research has focused on the incorporation of amine moieties

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Recent advances in development of amine functionalized adsorbents for CO2 capture

Cited by 116 publications

References 306 publications

Screening Supported Amine Sorbents in the Context of Post‐combustion Carbon Capture by Vacuum Swing Adsorption

Screening Supported Amine Sorbents in the Context of Post‐combustion Carbon Capture by Vacuum Swing Adsorption

Recent Advances in the Chemistry of Metal Carbamates

Diffusion kinetics of CO₂ in amine‐impregnated MIL‐101, alumina, and silica adsorbents

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Recent advances in development of amine functionalized adsorbents for CO2 capture

Cited by 116 publications

References 306 publications

Screening Supported Amine Sorbents in the Context of Post‐combustion Carbon Capture by Vacuum Swing Adsorption

Screening Supported Amine Sorbents in the Context of Post‐combustion Carbon Capture by Vacuum Swing Adsorption

Recent Advances in the Chemistry of Metal Carbamates

Diffusion kinetics of CO2 in amine‐impregnated MIL‐101, alumina, and silica adsorbents

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Diffusion kinetics of CO₂ in amine‐impregnated MIL‐101, alumina, and silica adsorbents