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Facile preparation of activated carbon with optimal pore range for high butane working capacity

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2020, 30(3), pp.297-305
  • DOI : 10.1007/s42823-019-00098-w
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : June 19, 2019
  • Accepted : October 17, 2019
  • Published : June 1, 2020

Lee hye-min 1 Lee Byeong-Hoon 1 An Kay-Hyeok 2 PARK SOOJIN 3 Kim Byung-Joo 1

1(재) 한국탄소융합기술원
2전주대학교
3인하대학교

Accredited

ABSTRACT

In this work, the correlation between the pore characteristics of activated carbon (AC) and the adsorption/desorption charac�teristics of evaporated fuel was studied. AC was prepared by various physical re-activation methods using coconut-derived commercial AC. Pore characteristics of the re-activated AC were investigated using N2/77 K adsorption isotherms. The structural characteristics of the AC were observed by X-ray difraction and Raman spectroscopy. The butane working capacity was observed according to ASTM D5228. From the results, the specifc surface area and total pore volume of the ACs were determined to be 1380–2040 m2 /g and 0.60–0.96 cm3 /g, respectively. It was also observed that various pore size distributions were found to be dependent on the functions of the activation method and time. A close relationship between butane activity/ retentivity and micropore/mesopore volumes was found. In addition, it was inferred that the volume fraction of micropores and sub-mesopores with diameters between 1.5 and 3.0 nm primarily controls butane activity.

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