Determination of the optimum porosity for 2-CEES adsorption by activated carbon fiber from various precursors

Lee hye-min (이혜민); Lee Byeong-Hoon (이병훈); Kim Ju-Hwan (김주환); An  Kay-Hyeok (안계혁); PARK SOOJIN (박수진); Kim Byung-Joo (김병주)

doi:10.1007/s42823-019-00080-6

Determination of the optimum porosity for 2-CEES adsorption by activated carbon fiber from various precursors

Carbon Letters
Abbr : Carbon Lett.
2019, 29(6), pp.649-654
DOI : 10.1007/s42823-019-00080-6
Publisher : Korean Carbon Society
Research Area : Natural Science > Natural Science General > Other Natural Sciences General
Received : April 11, 2019
Accepted : August 28, 2019
Published : December 1, 2019

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

¹(재) 한국탄소융합기술원
²전주대학교
³인하대학교

Accredited

ABSTRACT

In this study, we prepared ACFs with a high specific surface area from various precursors (rayon, pitch, and oxidized polyacrylonitrile-based fibers) by a steam-activation technique and investigated the effects of the micropore and mesopore fraction on 2-CEES adsorption behaviors. The activation time was precisely controlled so that the activation yield was in the range of 35–40% to ensure the mechanical properties of the ACFs. The N2 adsorption isotherm characteristics at 77K were confirmed by Brunauer–Emmett–Teller, Barrett–Joyner–Halenda and non-local density functional theory equations. The adsorption capacities of the ACF were measured by breakthrough experiments in the gas phase (750 μg/mL of 2-CEES in N2 flow). The removal efficiency of the ACFs was evaluated and compared with that of AC. From the results, specific surface areas and total pore volume of the ACF were determined to be 1380–1670 m2/g and 0.61–0.82 cm3/g, respectively. It was also observed that various pore characteristics of ACF were found to be dependent on crystallite structure of each precursor. The break through time (C/C0 = 0.10) was in the order of Oxi-Pan-H-9-2 < Saratoga AC < Rayon-H-9-3 < Pitch-H-9-4. This indicates that 2-CEES adsorption capacity could be a function not only of specific surface area or total pore volume, but also of sub-mesopore volume fraction in the range of 1.5–2.5 nm of adsorbents.

KEYWORDS

Activated carbon fiber Physical activation 2-CEES Chemical warfare agent

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Carbon Letters 2023 KCI Impact Factor : 1.35 KCI-WoS Impact Factor : 6.04

Determination of the optimum porosity for 2-CEES adsorption by activated carbon fiber from various precursors

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This is the result of checking the information with the same ISSN, publication year, volume, and start page between the WoS and the KCI journals. (as of 2024-07-28)

Total Citation Counts(KCI+WOS) (15) 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 (15) 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 2024-10-01)

* References for papers published after 2023 are currently being built.

Carbon Letters 2023 KCI Impact Factor : 1.35 KCI-WoS Impact Factor : 6.04

Determination of the optimum porosity for 2-CEES adsorption by activated carbon fiber from various precursors

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Total Citation Counts(KCI+WOS) (15) 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 (15) 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 2024-10-01)

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This is the result of checking the information with the same ISSN, publication year, volume, and start page between the WoS and the KCI journals. (as of 2024-07-28)

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