Materials challenges for the development of solid sorbents for post-combustion carbon capture

Drage, Trevor C.; Snape, Colin E.; Stevens, Lee A.; Wood, Joseph; Wang, Jiawei; Cooper, Andrew I.; Dawson, Robert; Guo, Zhengxiao; Satterley, Christopher J.; Irons, Robin

doi:10.1039/c2jm12592g

Cited by 260 publications

(227 citation statements)

References 91 publications

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“…Benzimidazole-linked polymers 41 show selectivities up to 113 at 273 K, being reduced to 71 at 298 K. Although nitrogen-rich organic cage frameworks 30,47 show high CO 2 /N 2 selectivities up to 213 at 298 K, their surface areas (o10 m 2 g À 1 ) and CO 2 capture capacities (up to 7.15 mg g À 1 ) are very low. Other structures with protic nitrogens also behave in a similar fashion 43,44,48 .…”

Section: Synthesismentioning

confidence: 84%

Unprecedented high-temperature CO2 selectivity in N2-phobic nanoporous covalent organic polymers

et al. 2013

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Post-combustion CO 2 capture and air separation are integral parts of the energy industry, although the available technologies remain inefficient, resulting in costly energy penalties. Here we report azo-bridged, nitrogen-rich, aromatic, water stable, nanoporous covalent organic polymers, which can be synthesized by catalyst-free direct coupling of aromatic nitro and amine moieties under basic conditions. Unlike other porous materials, azo-covalent organic polymers exhibit an unprecedented increase in CO 2 /N 2 selectivity with increasing temperature, reaching the highest value (288 at 323 K) reported to date. Here we observe that azo groups reject N 2 , thus making the framework N 2 -phobic. Monte Carlo simulations suggest that the origin of the N 2 phobicity of the azo-group is the entropic loss of N 2 gas molecules upon binding, although the adsorption is enthalpically favourable. Any gas separations that require the efficient exclusion of N 2 gas would do well to employ azo units in the sorbent chemistry.

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Section: Synthesismentioning

confidence: 84%

Unprecedented high-temperature CO2 selectivity in N2-phobic nanoporous covalent organic polymers

et al. 2013

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“…The emerging porous metal-organic frameworks (MOFs) are promising as the cost-effective and efficient materials for CO 2 capture and separation [5][6][7][8][9][10] . The regeneration energy cost to utilize these porous materials for CO 2 capture by the implementation of temperature swing adsorption, pressure swing adsorption (PSA) and vacuum swing adsorption is significantly lower than the abovementioned alkanolamine technology.…”

mentioning

confidence: 99%

Microporous metal-organic framework with potential for carbon dioxide capture at ambient conditions

et al. 2012

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“…However, for adsorption to be used in large-scale applications, two main aspects need to be addressed. The first is the choice of the adsorbent materials (Drage et al, 2012). To date, great attention is focused on the development of highly specific adsorbent materials, namely materials with great affinity towards CO 2 molecules (Choi et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Role of Acoustic Fields in Promoting the Gas-Solid Contact in a Fluidized Bed of Fine Particles

Raganati

Ammendola

Chirone

2015

KONA

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The present work is a review presenting the main results obtained by our research group in the field of soundassisted fluidization of fine particles. Our aim is to highlight the role of acoustic fields in enhancing the gas-solid contact efficiency, with specific attention to the phenomenological mechanism upon which this technique is based. In particular, the first section presents the characterization of the fluidization behaviour of four different nanopowders in terms of pressure drops, bed expansion, and minimum fluidization velocity as affected by acoustic fields of different intensity and frequency. The fluidization of binary mixtures comprising two powders is also investigated under the application of different acoustic fields and varying the amounts of the two powders. The second section focuses on the study of the mixing process between two different nanopowders both from a "global/macroscopic" and "local/microscopic" point of view and highlighting the effect of mixture composition, primary particles density and sound intensity. The last section presents a promising application of sound-assisted fluidization, i.e. CO 2 capture by adsorption on a fine activated carbon, pointing out the effect of CO 2 partial pressure, superficial gas velocity, sound intensity and frequency on the adsorption efficiency.

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Materials challenges for the development of solid sorbents for post-combustion carbon capture

Cited by 260 publications

References 91 publications

Unprecedented high-temperature CO2 selectivity in N2-phobic nanoporous covalent organic polymers

Unprecedented high-temperature CO2 selectivity in N2-phobic nanoporous covalent organic polymers

Microporous metal-organic framework with potential for carbon dioxide capture at ambient conditions

Role of Acoustic Fields in Promoting the Gas-Solid Contact in a Fluidized Bed of Fine Particles

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