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Received January 11, 2005
Accepted May 6, 2005
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Methane Conversion over Nanostructured Pt/γ-Al2O3 Catalysts in Dielectric-Barrier Discharge
Department of Environmental Engineering, Donghae University, 119, Jiheung-dong, Donghae, Gangwon-do 240-713, Korea 1College of Environment & Applied Chemistry, Kyung Hee University, Yongin-si, Kyunggi-do 449-701, Korea 2Clean Technology Center, Korea Institute of Science and Technology, P.O. BOX 131, Cheongryang, Seoul 136-650, Korea 3School of Chemical Engineering, ChungBuk National University, San 48, Gaeshin-dong, Heungduk-gu, Cheongju, Chungbuk 371-763, Korea
ks7070@dreamwiz.com
Korean Journal of Chemical Engineering, July 2005, 22(4), 585-590(6), 10.1007/BF02706648
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Abstract
Spherical nanostructured γ-Al2O3 granules were prepared by combining the modified Yoldas process and oil-drop method, followed by the Pt impregnation inside mesopores of the granules by incipient wetness method. Prepared Pt/γ-Al2O3 catalysts were reduced by novel method using plasma, which was named plasma assisted reduction (PAR), and then used for methane conversion in dielectric-barrier discharge (DBD). The effect of Pt loading, calcination temperature on methane conversion, and selectivities and yields of products were investigated. Prepared Pt/γ-Al2O3 catalysts were successfully reduced by PAR. The main products of methane conversion were the light alkanes such as C2H6, C3H8 and C4H10 when the catalytic plasma reaction was carried out with Pt/γ-Al2O3 catalyst. Methane conversion was in the range of 38-40% depending on Pt loading and calcination temperature. The highest yield of C2H6 was 12.7% with 1 wt% Pt/γ-Al2O3 catalysts after calcinations at 500 ℃.
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References
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Zhang HS, Wang JX, Driscoll DJ, Lunsford JH, J. Catal., 112(2), 366 (1988)
Zhang Y, Chu W, Cao WM, Luo CR, Wen XG, Zhou KL, Plasma Chem. Plasma Process., 20(1), 137 (2000)
Zhang Y, Smith KJ, Catal. Today, 77(3), 257 (2002)
