Comprehensive study of ultra-microporous nitrogen-doped activated carbon for CO2 capture

Sethia, Govind; Sayari, Abdelhamid

doi:10.1016/j.carbon.2015.05.017

Cited by 280 publications

(198 citation statements)

References 63 publications

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“…The increment in surface area to N ratio (from 22.94 to 92.37, Table S2) further confirms our hypothesis. This is also in line with Sethia's result that CO 2 uptake is strongly dependent on the occurrence of ultramicropores and much less on the nitrogen content [35] . N 2 adsorption at 273 K and 298 K were also performed as comparisons ( Figure S11, S12).…”

supporting

confidence: 92%

A one-step carbonization route towards nitrogen-doped porous carbon hollow spheres with ultrahigh nitrogen content for CO₂ adsorption

Wang

Zeng

et al. 2015

Chem. Commun.

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supporting

confidence: 92%

A one-step carbonization route towards nitrogen-doped porous carbon hollow spheres with ultrahigh nitrogen content for CO₂ adsorption

Wang

Zeng

et al. 2015

Chem. Commun.

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“…Other authors also reported that CO2 capture basically depends on micropores with sizes below 0.8 nm (Presser et al, 2011;Lee and Park, 2013;Sevilla et al, 2013;Wickramaratne and Jaroniec, 2013). Improved CO2 retention capacities have been ascribed to even smaller diameters as well (Martín et al, 2010;Wahby et al, 2010;Wei et al, 2012;Sethia and Sayari, 2015). Zhang et al (2013) described that critical pore size increased with decreasing adsorption temperature and found that micropores with sizes below 0.54, 0.7, and 0.8 nm were determinant for adsorption at 75, 25, and 0°C, respectively .…”

Section: Adsorption Equilibrium Studiesmentioning

confidence: 93%

Biomass Waste Carbon Materials as adsorbents for CO2 Capture under Post-Combustion Conditions

et al. 2016

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A series of porous carbon materials obtained from biomass waste have been synthesized, with different morphologies and structural properties, and evaluated as potential adsorbents for CO2 capture in post-combustion conditions. These carbon materials present CO2 adsorption capacities, at 25°C and 101.3 kPa, comparable to those obtained by other complex carbon or inorganic materials. Furthermore, CO2 uptakes under these conditions can be well correlated with the narrow micropore volume, derived from the CO2 adsorption data at 0°C ( ) V CO 2 DR . In contrast, CO2 adsorption capacities at 25°C and 15 kPa are more related to only pores of sizes lower than 0.7 nm. The capacity values obtained in column adsorption experiments were really promising. An activated carbon fiber obtained from Alcell lignin, FCL, presented a capacity value of 1.3 mmol/g (5.7%wt). Moreover, the adsorption capacity of this carbon fiber was totally recovered in a very fast desorption cycle at the same operation temperature and total pressure and, therefore, without any additional energy requirement. Thus, these results suggest that the biomass waste used in this work could be successfully valorized as efficient CO2 adsorbent, under post-combustion conditions, showing excellent regeneration performance.

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“…In addition to the positive effect of nitrogen in CO 2 capture, the importance of suitable pore size has also been reported . Pore sizes below 0.7 nm have been shown to have a tremendous effect on the final CO 2 uptake .…”

Section: Introductionmentioning

confidence: 99%

Polyacrylonitrile Nanoparticle‐Derived Hierarchical Structure for CO₂ Capture

et al. 2018

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The production of porous clusters by controlled aggregation of polyacrylonitrile nanoparticles and thermal treatment, and their application to CO2 capture are reported. The synthesis of the primary particles by emulsion polymerization exhibits good reproducibility and is easy to scale up. The subsequent gelation of the produced latexes (controlled destabilization by salt addition) results in the formation of macroporous monoliths of nanoparticles with a mean pore diameter of 100 nm. A carefully assessed thermal treatment is applied to the dried monolith after grinding. The produced porous clusters are processed with three high‐temperature steps: oxidation, stabilization, and pyrolysis. The latter allows for the creation of micropores in the initially non‐porous nanoparticles, thus enabling access to the remaining nitrogen‐bearing species present in the pyrolyzed polymer. The relative contributions of the remaining nitrogen‐bearing species and of the micropores are elucidated by applying different oxidation temperatures. In particular, the fraction of the pores with diameter smaller than 0.7 nm is decisive in determining the final capture ability. After a treatment including oxidation at 240 °C, stabilization at 350 °C, and pyrolysis at 900 °C, the best reported material shows an average CO2 adsorption capacity of 3.56±0.17 mol (CO2) kg−1 at 0 °C and 1 atm.

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Comprehensive study of ultra-microporous nitrogen-doped activated carbon for CO2 capture

Cited by 280 publications

References 63 publications

A one-step carbonization route towards nitrogen-doped porous carbon hollow spheres with ultrahigh nitrogen content for CO₂ adsorption

A one-step carbonization route towards nitrogen-doped porous carbon hollow spheres with ultrahigh nitrogen content for CO₂ adsorption

Biomass Waste Carbon Materials as adsorbents for CO2 Capture under Post-Combustion Conditions

Polyacrylonitrile Nanoparticle‐Derived Hierarchical Structure for CO₂ Capture

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Comprehensive study of ultra-microporous nitrogen-doped activated carbon for CO2 capture

Cited by 280 publications

References 63 publications

A one-step carbonization route towards nitrogen-doped porous carbon hollow spheres with ultrahigh nitrogen content for CO2 adsorption

A one-step carbonization route towards nitrogen-doped porous carbon hollow spheres with ultrahigh nitrogen content for CO2 adsorption

Biomass Waste Carbon Materials as adsorbents for CO2 Capture under Post-Combustion Conditions

Polyacrylonitrile Nanoparticle‐Derived Hierarchical Structure for CO2 Capture

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A one-step carbonization route towards nitrogen-doped porous carbon hollow spheres with ultrahigh nitrogen content for CO₂ adsorption

A one-step carbonization route towards nitrogen-doped porous carbon hollow spheres with ultrahigh nitrogen content for CO₂ adsorption

Polyacrylonitrile Nanoparticle‐Derived Hierarchical Structure for CO₂ Capture