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Enhanced CO2 capture by cupuassu shell-derived activated carbon with high microporous volume

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2023, 33(3), pp.727-735
  • DOI : 10.1007/s42823-022-00454-3
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : June 10, 2022
  • Accepted : December 21, 2022
  • Published : May 1, 2023

Cruz Orlando F. 1 Campello-Gómez Ignacio 2 Casco Mirian E. 3 Serafin Jarosław 4 Silvestre-Albero Joaquín 2 Martínez-Escandell Manuel 2 Hotza Dachamir 5 Rambo Carlos R. 5

1National Institute of Amazonian Research (INPA)
2Departamento de Química Inorgánica, Universidad de Alicante
3Department of Engineering, Universidad Católica del Uruguay
4Department of Inorganic and Organic Chemistry, University of Barcelona
5Graduate Program on Materials Science and Engineering (PGMAT), Federal University of Santa Catarina

Accredited

ABSTRACT

Here, we report the preparation of microporous-activated carbons from a Brazilian natural lignocellulosic agricultural waste, cupuassu shell, by pyrolysis at 500 ºC and KOH activation under different experimental conditions and their subsequent application as adsorbent for CO2 capture. The effect of the KOH:precursor ratio (wt/wt%) and the activation temperature on the porous texture of activated carbons have been studied. The values of specific surface area ranged from 1132 to 2486 m2/g, and the overall micropore volume ranged from 0.73 to 1.02 cm3/g. Carbons activated with 2:1 ratio of KOH and activation temperature of 700 ºC presented a CO2 adsorption at 1 bar of 7.8 and 4.4 mmol/g at 0 °C and 25 ºC, respectively. The isosteric heat of adsorption, Qst , was calculated for all samples by applying the Clausius–Clapeyron approach to CO2 adsorption isotherms at both temperatures. The values of CO2 adsorption capacities are among the highest reported in the literature, especially for activated carbons produced from biomass.

Citation status

This is the result of checking the information with the same ISSN, publication year, volume, and start page between the WoS and the KCI journals. (as of 2024-07-26)

Total Citation Counts(KCI+WOS) (11) This is the number of times that the duplicate count has been removed by comparing the citation list of WoS and KCI.

Scopus Citation Counts (11) This is the result of checking the information with the same ISSN, publication year, volume, and start page between articles in KCI and the SCOPUS journals. (as of 2024-10-01)

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