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Micropore-structured activated carbon prepared by waste PET/petroleum-based pitch

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2019, 29(4), pp.385-392
  • DOI : 10.1007/s42823-019-00028-w
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : November 28, 2018
  • Accepted : February 13, 2019
  • Published : August 1, 2019

Seo Sang Wan 1 choi yun jeong 1 Kim Ji Hong 1 Cho Jong Hoon 1 Lee, Young-Seak 2 Im Ji Sun 1

1한국화학연구원
2충남대학교

Accredited

ABSTRACT

In this study, pitch crosslinked by oxygen function groups was made into activated carbon (AC) and pore structure was observed. The oxygen functional groups were introduced by the addition of waste PET for pitch synthesis. Activation agent ratios used to obtain the AC during the activation process were 1:1, 1:2 and 1:4 (pitch:KOH, w/w). The oxygen content in the prepared pitch was characterized by elemental analysis. Also, the molecular weight of pitch was investigated by MALDI-TOF. Specific surface area and micropore volume of the prepared AC were determined by the argon adsorption–desorption analysis and calculated using the Brunauer–Emmett–Teller and Horvath–Kawazoe equations, respectively. Micropore fraction of PET-free AC was smaller than that of PET-added AC. At high activation agent ratio, mesopores were created when the micropore structure collapsed. However, in the PET-added AC, due to the oxygen crosslinking effect, the micropore structure and micropore size were maintained even at a high activation agent ratio. Therefore, PET AC was found to have a higher micropore fraction than that of PET-free AC.

Citation status

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Total Citation Counts(KCI+WOS) (22) 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 (24) 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 2023-10-01)

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