Polyfuran-Derived Microporous Carbons for Enhanced Adsorption of CO2 and CH4

Jun Wang, Rajamani Krishna, Xiaofei Wu, Yingqiang Sun, Shuguang Deng

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Oxygen-doped microporous carbons were synthesized by chemical activation of polyfuran with KOH or ZnCl2 at 600 and 800 °C. It was found that KOH preserves and ZnCl2 eliminates the O-C functional groups in the activation process. The O-doped carbon activated with KOH at 800°C exhibited a high CO2 capacity (4.96 mmol g-1, 273 K, 1 bar) and CH4 adsorption capacity (2.27 mmol g-1, 273 K, 1 bar). At 298 K and 1 bar, a very high selectivity for separating CO2/N2 (41.7) and CO2/CH4 (6.8) gas mixture pairs was obtained on the O-doped carbon activated with KOH at 600°C. The excellent separation ability of the O-doped carbons was demonstrated in transient breakthrough simulations of CO2/CH4/N2 mixtures in a fixed bed adsorber. The isosteric adsorption heats of the O-doped carbons were also significantly lower than those of MOF-74 and NaX zeolite. The O-doped microporous carbon adsorbents appear to be a very promising adsorbent for CO2 capture from flue gas, biogas upgrading, and CH4 storage.

Original languageEnglish (US)
Pages (from-to)9845-9852
Number of pages8
JournalLangmuir
Volume31
Issue number36
DOIs
StatePublished - Sep 15 2015
Externally publishedYes

Fingerprint

Carbon
Adsorption
adsorption
carbon
activated carbon
adsorbents
Activated carbon
Adsorbents
Chemical activation
activation
Zeolites
flue gases
upgrading
Biofuels
Biogas
Flue gases
Gas mixtures
Functional groups
gas mixtures
beds

ASJC Scopus subject areas

  • Electrochemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Materials Science(all)
  • Spectroscopy

Cite this

Polyfuran-Derived Microporous Carbons for Enhanced Adsorption of CO2 and CH4. / Wang, Jun; Krishna, Rajamani; Wu, Xiaofei; Sun, Yingqiang; Deng, Shuguang.

In: Langmuir, Vol. 31, No. 36, 15.09.2015, p. 9845-9852.

Research output: Contribution to journalArticle

Wang, Jun ; Krishna, Rajamani ; Wu, Xiaofei ; Sun, Yingqiang ; Deng, Shuguang. / Polyfuran-Derived Microporous Carbons for Enhanced Adsorption of CO2 and CH4. In: Langmuir. 2015 ; Vol. 31, No. 36. pp. 9845-9852.
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