Abstract
Oak-tree-based white charcoals were subjected to high-temperature heat treatment at up to 2400 °C to analyze changes in their surface morphology and internal structure using scanning electron microscopy and transmission electron microscopy. When the treatment temperature was increased, micropores became smaller and disappeared, but macropores and mesopores remained, resulting in an increase in average pore size. At treatment temperatures of 2000 °C or higher, all the pores disappeared and the internal structure changed into a dense graphite-like structure. The X-ray diffraction patterns of charcoals heat-treated at 1800 °C or higher in an argon atmosphere exhibited a sharp peak near 2θ = 26.5°, and Raman spectroscopy showed clear D and 2D bands near 1360 and 2680 cm−1, respectively, indicating that carbon graphite crystals were developing. At 2400 °C for 10 min., the interlayer distances (d002 and d100), Lc and La of the graphite crystallites were 0.34, 0.21, 23.00, and 6.13 nm, respectively. The presence of the D band and the IG/(IG + ID) ratio confirmed that the newly developed structure was turbostratic. The Brunauer–Emmett–Teller (BET) adsorption isotherm of the as-received charcoals exhibited peculiar characteristics in which Types I and IV were mixed. This result is due to low-pressure hysteresis, in which nitrogen is embedded in the crevices of charcoal during adsorption and is hardly desorbed during desorption. This low-pressure hysteresis disappeared as increasing the temperature, the adsorption isotherm of charcoal treated at 2400 °C was Type II, and the specific surface area was 8.45 m2/g, indicating that the charcoal was completely transformed to nonporous graphite.
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References
A. Fontana, Mem. Mat. Fis. Soc. Ital Sci. 1, 679 (1777)
C. W. Scheele, Chemical Observations on Air and Fire, vol. 182 (1780).
N.T. De Saussure, Gilbert’s Ann. 47, 113 (1814)
E. Mitscherlich, Pogg. Ann. 59, 94 (1843)
R.C. Bansal, J.B. Donnet, F. Stoeckli, Active Carbon (Marcel Dekker Inc., New York, 1988), p.vii
S. Iijima, Nature 354, 56 (1991)
K.S. Novoselov, A.K. Geim, S.V. Morozov, D. Jiang, Y. Zhang, S.V. Dubonos, I.V. Grigorieva, A.A. Firsov, Science 306(5696), 666 (2004)
D.A. Spyker, A. Arch, Intern. Med. 145(1), 43 (1985)
R. Spector, G.D. Park, West. J. Med. 145, 511 (1986)
J. Greensher, H.C. Mofenson, T.R. Caraccio, R. Pediatr. 80, 949 (1987)
Korean Carbon Society, Carbon Materials Application Handbook (Daiyoung Co., Seoul, 2008), p.258
K. Kazuro, A. Mitsuyoshi, A. Atsushi, O. Shinichiro, Tanso 191, 32 (2000)
Y. Takeshi, I. Shigehisa, H. Toshimitsu, Tanso 186, 2 (1999)
H. Toshimitsu, Y. Kenji, K. Emico, I. Yuji, I. Shigehisa, J. Wood Sci. 44, 332 (1998)
T. Hata, T. Vystavel, P. Bronsveld, J. DeHosson, H. Kikuchi, K. Nishimiya, Y. Imamura, Carbon 42(5–6), 961 (2004)
M. Inagaki, S. Naka, J. Mater. Sci. 10(5), 814 (1975)
N. Kasahara, S. Shiraishi, A. Oya, Heterogeneous graphitization of thin carbon fiber derived from phenol-formaldehyde resin. Carbon 41, 1654–1656 (2003)
K. Okabe, S. Shiraishi, A. Oya, Mechanism of heterogeneous graphitization observed in phenolic resin-derived thin carbon fibers heated at 3000°C. Carbon 42, 667 (2004)
J.L. Fogg, K.J. Putman, T. Zhang et al., Catalysis-free transformation of non-graphitising carbons into highly crystalline graphite. Commun Mater 1, 47 (2020). https://doi.org/10.1038/s43246-020-0045-y
Y. Katsuyama, Y. Nakayama, H. Kobayashi, Y. Goto, I. Honma, M. Watanabe, Chemsuschem 13, 5762 (2020)
N. Sun, H. Liu, B. Xu, J Mater Chem. A. 3, 20560 (2015)
N. Koei, H. Toshimitsu, K. Hikari, I. Yuji, J. Wood Sci. 50, 177 (2004)
D.S. Knight, W.B. White, J. Mater. Res. 4, 385 (1989)
J. Ramirez-Rico, C. Gutierrez-Castilla, J. Martinez-Fernandez, V.V. Popov, T.S. Orlova, Mater. Des. 99, 528 (2016)
Y. Akira, K. Yutaka, H. Yoshihiro, Tanso 221, 2 (2006)
Y. Min, S. Theo, S. Taicao, G. Franceo, J.R. Michael, Materials 11(9), 1588 (2018)
IUPAC, “Manual of symbols and terminology,” Appendix 2, Pt. 1 colloid and surface chemistry. Pure Appl. Chem. 31(4), 577 (1972)
D.H. Everett, J.C. Powl, J. Chem. Soc. Faraday Trans. I. 72, 619 (1976)
A. Zsigmondy, Anorg. Chem. 71, 356 (1911)
S. Brunauer, P.H. Emmett, E. Teller, J. Am. Chem. Soc. 60(2), 309 (1938)
K.S. An, L.K. Kwak, H.G. Kim, S.K. Ryu, Korean Chem. Eng. Res. 60(2), 1 (2022)
D. A. Cadenhead, D. H. Everett, Proc. Int. Conf. on Carbon and Graphite (Society of Chemical Industry, 1958), p. 272
B. McEnaney, J. Chem. Soc. Faraday Trans. I. 70, 84 (1974)
V.R. Deitz, E. Berlin, J. Colloid Interface Sci. 44(1), 57 (1973)
M.I. Pope, S.J. Gregg, Fuel 39(3), 267 (1960)
A. Bailey, D.A. Cadenhead, D.H. Davies, D.H. Everett, A.J. Miles, Trans. Faraday Soc. 67, 231 (1971)
B.C. Lippens, J.H. de Boer, Studies on pore systems in catalysts: the t-method. J. Catalysis 4, 319 (1965)
G. Horvath, K. Kawazoe, J. Chem. Eng. (Jpn) 16, 470 (1983)
I. Langmuir, J. Am. Chem. Soc. 40(9), 1361 (1918)
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The research work described in this article was a part of the basic research project (No.2016R1A6A1A03012069) supported by the National Research Foundation (Ministry of Education). This work also supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MIST) (No. 2020R1A2C1102174)
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Park, YN., Lee, J.J., Kwac, LK. et al. Graphitization of Oak-Tree-Based White Charcoals by High Temperature Heat Treatment. Korean J. Chem. Eng. (2024). https://doi.org/10.1007/s11814-024-00138-w
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DOI: https://doi.org/10.1007/s11814-024-00138-w