A new choice of polymer precursor for solvent-free method: Preparation of N-enriched porous carbons for highly selective CO2 capture

Peixin Zhang, Yao Zhong, Jian Ding, Jun Wang, Mai Xu, Qiang Deng, Zheling Zeng, Shuguang Deng

Research output: Contribution to journalArticle

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Abstract

A facile one-pot melting-assisted and solvent-free method was successfully developed for the first time for preparing nitrogen-containing polymers. Followed by activation at temperatures ranging from 600 to 800 °C led to the formation of N-rich microporous carbons possessing narrow pore size distribution (ca. 0.5–3 nm), high specific surface area (ca. 1021.4–3657.0 m2 g−1), large pore volume (ca. 0.43–2.00 cm3 g−1) and high nitrogen content (ca. up to 5.11 wt%). Particularly, the porous carbons exhibited outstanding CO2 adsorption capacity of 2.65 and 7.38 mmol g−1 at 273 K and 0.15 and 1 bar, respectively; meanwhile, it also exhibited extremely large CO2 storage capacity of 22.06 mmol g−1 at 298 K and 20 bar. Moreover, the outstanding CO2/N2, CO2/CH4 and CH4/N2 selectivity up to 36.5, 6.9 and 5.1 at 298 K and 1 bar were achieved. The determinant factors on CO2 capture at 0.15, 1 and 20 bar were carefully investigated. Furthermore, this method could be 10-fold scaled up to produce almost identical high-performance carbons. For real-world applications, pressure/vacuum swing adsorption (P/VSA) working capacity, gas-mixture transit breakthrough experiment, and recycle feasibility are evaluated. Thus, these novel materials are promising candidates for CO2 capture from dilute gas mixtures.

LanguageEnglish (US)
Pages963-973
Number of pages11
JournalChemical Engineering Journal
Volume355
DOIs
StatePublished - Jan 1 2019
Externally publishedYes

Fingerprint

Polymers
Carbon
polymer
carbon
Gas mixtures
adsorption
Nitrogen
nitrogen
Adsorption
surface area
melting
Specific surface area
fold
Pore size
Melting
Chemical activation
Vacuum
method
experiment
temperature

Keywords

  • Biogas upgrading
  • CO capture
  • IAST selectivity
  • N-doped porous carbon
  • Solvent-free method

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Cite this

A new choice of polymer precursor for solvent-free method : Preparation of N-enriched porous carbons for highly selective CO2 capture. / Zhang, Peixin; Zhong, Yao; Ding, Jian; Wang, Jun; Xu, Mai; Deng, Qiang; Zeng, Zheling; Deng, Shuguang.

In: Chemical Engineering Journal, Vol. 355, 01.01.2019, p. 963-973.

Research output: Contribution to journalArticle

Zhang, Peixin ; Zhong, Yao ; Ding, Jian ; Wang, Jun ; Xu, Mai ; Deng, Qiang ; Zeng, Zheling ; Deng, Shuguang. / A new choice of polymer precursor for solvent-free method : Preparation of N-enriched porous carbons for highly selective CO2 capture. In: Chemical Engineering Journal. 2019 ; Vol. 355. pp. 963-973.
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N2 - A facile one-pot melting-assisted and solvent-free method was successfully developed for the first time for preparing nitrogen-containing polymers. Followed by activation at temperatures ranging from 600 to 800 °C led to the formation of N-rich microporous carbons possessing narrow pore size distribution (ca. 0.5–3 nm), high specific surface area (ca. 1021.4–3657.0 m2 g−1), large pore volume (ca. 0.43–2.00 cm3 g−1) and high nitrogen content (ca. up to 5.11 wt%). Particularly, the porous carbons exhibited outstanding CO2 adsorption capacity of 2.65 and 7.38 mmol g−1 at 273 K and 0.15 and 1 bar, respectively; meanwhile, it also exhibited extremely large CO2 storage capacity of 22.06 mmol g−1 at 298 K and 20 bar. Moreover, the outstanding CO2/N2, CO2/CH4 and CH4/N2 selectivity up to 36.5, 6.9 and 5.1 at 298 K and 1 bar were achieved. The determinant factors on CO2 capture at 0.15, 1 and 20 bar were carefully investigated. Furthermore, this method could be 10-fold scaled up to produce almost identical high-performance carbons. For real-world applications, pressure/vacuum swing adsorption (P/VSA) working capacity, gas-mixture transit breakthrough experiment, and recycle feasibility are evaluated. Thus, these novel materials are promising candidates for CO2 capture from dilute gas mixtures.

AB - A facile one-pot melting-assisted and solvent-free method was successfully developed for the first time for preparing nitrogen-containing polymers. Followed by activation at temperatures ranging from 600 to 800 °C led to the formation of N-rich microporous carbons possessing narrow pore size distribution (ca. 0.5–3 nm), high specific surface area (ca. 1021.4–3657.0 m2 g−1), large pore volume (ca. 0.43–2.00 cm3 g−1) and high nitrogen content (ca. up to 5.11 wt%). Particularly, the porous carbons exhibited outstanding CO2 adsorption capacity of 2.65 and 7.38 mmol g−1 at 273 K and 0.15 and 1 bar, respectively; meanwhile, it also exhibited extremely large CO2 storage capacity of 22.06 mmol g−1 at 298 K and 20 bar. Moreover, the outstanding CO2/N2, CO2/CH4 and CH4/N2 selectivity up to 36.5, 6.9 and 5.1 at 298 K and 1 bar were achieved. The determinant factors on CO2 capture at 0.15, 1 and 20 bar were carefully investigated. Furthermore, this method could be 10-fold scaled up to produce almost identical high-performance carbons. For real-world applications, pressure/vacuum swing adsorption (P/VSA) working capacity, gas-mixture transit breakthrough experiment, and recycle feasibility are evaluated. Thus, these novel materials are promising candidates for CO2 capture from dilute gas mixtures.

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