Carbon dioxide adsorption performance of ultramicroporous carbon derived from poly(vinylidene fluoride)

Seul Yi Lee, Soo Jin Park

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

This study examined the properties of ultra-microporous carbon synthesized by the pyrolysis of poly(vinylidene fluoride) as a function of the heat-treatment temperature, and evaluated the CO2 adsorption capacity by pressure swing analysis. X-ray photoelectron spectroscopy confirmed the specific elements of the heat-treated carbon (HTC) surfaces. The textural properties were analyzed using N2 adsorption isotherms at 77 K. The CO2 adsorption capacity was measured by CO2 isothermal adsorption at 298 K and under increasing pressure up to 100 kPa. The CO 2 adsorption capacity increased with increasing heat-treatment temperature to 873 K (HTC-873, 155 mg/g), and then decreased at 973 K (HTC-973), which correlated with their micropore volume. Interestingly, HTC-773 with a smaller pore size had higher CO2 adsorption capacity than HTC-873 at pressures up to 30 kPa. This results show that the CO2 adsorption capacity at a certain pressures (in particular <30 kPa) is strongly affected by the pore size of the HTC samples but not by the micropore volume or specific surface area.

Original languageEnglish
Pages (from-to)147-151
Number of pages5
JournalJournal of Analytical and Applied Pyrolysis
Volume106
DOIs
StatePublished - Mar 2014

Bibliographical note

Funding Information:
This work was supported by the Korea CCS R&D Center (KCRC) grant funded by the Korea Government (Ministry of Science, ICT and Future Planning) ( 0031985 ) and the Carbon Valley Project by the Korea Government (Ministry of Commerce, Industry and Energy) .

Keywords

  • Activation-free method
  • Carbon dioxide capture
  • Heat-treatment
  • Microporous carbon
  • Pore size

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