금속(Fe 및 K) 담지 활성탄소를 위한 열처리 반응의 속도론적 고찰

김준식; 이재광; 김상도; 이철위; 이상봉; 최명재; Jun-Sik Kim; Jae-Kwang Lee; Sang-Do Kim; Chul Wee Lee; Sang-Bong Lee; Myoung-Jae Choi

Korean Chemical Engineering Research, Vol.42, No.5, 510-517, October, 2004

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금속(Fe 및 K) 담지 활성탄소를 위한 열처리 반응의 속도론적 고찰

Kinetics of Heat Treatment for Metal (Fe or K) Impregnated Activated Carbons

김준식 ^†, 이재광 , 김상도 ¹, 이철위 , 이상봉 , 최명재

한국화학연구원 화학기술부, 305-600 대전시 유성구 장동 100
¹한국에너지기술연구원 에너지환경연구부, 305-343 대전시 유성구 장동 71-2

Jun-Sik Kim^†, Jae-Kwang Lee , Sang-Do Kim¹, Chul Wee Lee , Sang-Bong Lee , and Myoung-Jae Choi

Advanced Chemical Technology Division, Korea Research Institute of Chemical Technology, 100, Jang-dong, Yuseong-gu, Daejeon 305-600, Korea
¹Energy and Environmental Research Division, Korea Institute of Energy Research, 71-2, Jang-dong, Yuseong-gu, Daejeon 305-343, Korea

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초록

Fe 또는 K를 담지한 활성탄소의 열처리를 수행하고 이들 활성탄소의 특성을 XRD, BET 표면적, 기공 분포, CO₂와 NH₃의 승온 탈착(TRD) 분석방법으로 살펴보았다. 또한, 열중량 분석(TGA)에 의한 열처리 반응의 속도론을 고찰하였으며 활성화에너지를 결정하기 위하여 Kissinger, Freeman-Carroll, Friedman 방법을 이용하였다. 열처리에 의하여 금속 활성탄소의 중기공 부피는 증가하였으나 미세공 부피와 BET 표면적은 크게 감소하였다. 이들 활성탄소는 상용 활성탄소에 비하여 상대적으로 높은 CO₂와 NH₃ 흡착량을 나타내었다.

Heat treatment of the activated carbons impregnated with Fe or K was carried out and these metal activated carbons (MAC) characterized by XRD, BET surface area, pore size distribution and CO₂ and NH₃ temperature programmed desorption (TPD). Also, The kinetics of the heat treatment was investigated by thermogravimetric analysis(TGA). Kissinger, Freeman-Carroll and Friedman method have been used to determine the activation energies. The mesopore volume of MAC was increased by heat treatment, but the micro volume and BET surface area decreased remarkably. CO₂ and NH₃ adsorption for the MAC is found to be higher than the commercial activated carbon (CAC).

Keywords:Activated Carbon;Heat Treatment;Impregnation;Metal

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[1] Tamai H, Katsu N, Ono K, Yasuda H, Carbon, 39, 1963 (2001)

[2] Moon SJ, Jeon GS, Ihm SK, HWAHAK KONGHAK, 26(6), 617 (1988)

[3] Freitas MMA, Figueiredo JL, Fuel, 80, 1 (2001)

[4] Kyotani T, Carbon, 38, 269 (2000)

[5] Ryoo R, Jun S, J. Korean Ind. Eng. Chem., 12(1), 1 (2001)

[6] Eom SY, Cho TH, Cho KH, Ryu SK, HWAHAK KONGHAK, 38(5), 591 (2000)

[7] Ferraz MCMA, Monteiro JLC, Fuel, 79(6), 645 (2000)

[8] Hayashi J, Horikawa T, Muroyama K, Gomes VG, Microporous Mesoporous Mater., 55, 63 (2002)

[9] Okada K, Yamamoto N, Kameshima Y, Yasumori A, J. of Colloid and Interface Sci., 262, 194 (2003)

[10] Teng H, Wang SC, Ind. Eng. Chem. Res., 39, 673 (2000)

[11] Ariyadejwanich P, Tanthapanichakoon W, Nakagawa K, Mukai SR, Tamon H, Carbon, 41, 157 (2003)

[12] Huidobro A, Pastor AC, Rodriguez-Reinoso F, Carbon, 39, 389 (2001)

[13] Tsai WT, Chang CY, Lin MC, Chien SF, Sun HF, Hsieh MF, Chemosphere, 45, 51 (2001)

[14] Oh WC, J. Korean Ind. Eng. Chem., 13(5), 434 (2002)

[15] Hayashi J, Uchibayashi M, Horikawa T, Muroyama K, Gomes VG, Carbon, 40, 2747 (2002)

[16] Ryu DK, Kim SH, J. Korean Ind. Eng. Chem., 9(2), 286 (1998)

[17] Hsu LY, Teng HS, Appl. Catal. B: Environ., 35(1), 21 (2001)

[18] Davini P, Carbon, 39, 2173 (2001)

[19] Yang KK, Wang XL, Wang YZ, Wu B, Jin YD, Yang B, European Polymer Journal, 39, 1567 (2003)

[20] Kissinger H, Anal. Chem., 29, 1702 (1957)

[21] Freeman ES, Carroll B, J. Phys. Chem., 62, 394 (1958)

[22] Friedman HL, J. Polym. Sci., 6, 183 (1963)

[23] Silva LMS, Orfao JJM, Figueiredo JL, Appl. Catal. A: Gen., 209(1-2), 145 (2001)

[24] Morozov IV, Znamenkov KO, Korenev YM, Shlyakhtin OA, Thermochim. Acta, 403(2), 173 (2003)

[25] Jackson JG, Novichikhin A, Fonseca RW, Holcombe JA, Spectroc. Acta Pt. B-Atom. Spectr., 50, 1423 (1995)

[26] Lehman RL, Gentry JS, Glumac NG, Thermochim. Acta, 316(1), 1 (1998)

[27] Mckee DW, Fuel, 62, 170 (1983)