Preparation of C/C composites by the chemical vapor infiltration (CVI) of propane pyrolysis

Kyung-Hoon Bang; Gui-Yung Chung; Hyung-Hoi Koo

Korean Journal of Chemical Engineering, Vol.28, No.1, 272-278, January, 2011

DOI10.1007/s11814-010-0352-y Export Citation

Preparation of C/C composites by the chemical vapor infiltration (CVI) of propane pyrolysis

Kyung-Hoon Bang, Gui-Yung Chung^†, and Hyung-Hoi Koo¹

Department of Chemical Engineering, Hong-Ik University, 72-1 Sangsudong, Mapoku, Seoul 121-791, Korea
¹ADD, Yuseong P. O. Box 35-5, Daejeon 305-600, Korea

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The preparation of C/C composites by the chemical vapor infiltration (CVI) of the pyrolysis carbon from propane was studied. Pyrolysis carbon was deposited at 30 torr and at temperatures between 1,173 and 1,233 K. The rate of carbon deposition increased slightly with time. The main gas products in the exit gas were methane, ethylene, and acetylene. The fraction of ethylene decreased and that of acetylene increased with the reaction temperature and the propane concentration. The produced propyl radicals reacted further at a high temperature and at a high propane concentration. These trends were similar to those of the reported data. Changes of the shapes of deposited carbon in the pores of preform were confirmed with SEM photos. The mathematical modeling of the system with the deposition rate constant from the reference estimated experimental data well.

Keywords:CVI;Propane;Pyrolysis Carbon;C/C Composites;Rate of Deposition

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[1] Delhaes P, Carbon., 40, 641 (2002)

[2] Renjun Z, Qiangkun L, Zhiyong L, J. Anal. Appl. Pyrol., 13, 183 (1988)

[3] Billaud F, J. Anal. Appl. Pyrol., 21(1/2), 15 (1991)

[4] Dagaut P, Cathonnet M, Boettner JC, Int. J. Chem. Kinet., 24, 813 (1992)

[5] Murphy DB, Carroll RW, Klonowski JE, Cabon., 35(12), 1819 (1997)

[6] WAMI EN, Chem. Eng. Technol., 17(3), 195 (1994)

[7] Tomlin AS, Pilling MJ, Merkin JH, Brindley J, Burgess N, Gough A, Ind. Eng. Chem. Res., 34(11), 3749 (1995)

[8] Norinaga K, Deutschmann O, Ind. Eng. Chem. Res., 46(11), 3547 (2007)

[9] Descamps C, Vignoles GL, Feron O, Langlais F, Lavenac J, J. Electrochem. Soc., 148(10), C695 (2001)

[10] Ziegler I, Fournet R, Marquaire PM, J. Anal. Appl. Pyrol., 73, 212 (2005)

[11] Ziegler I, Fournet R, Marquaire PM, J. Anal. Appl. Pyrol., 73, 231 (2005)

[12] Ziegler I, Fournet R, Marquaire PM, J. Anal. Appl. Pyrol., 79, 268 (2007)

[13] Khan RU, Bajohr S, Buchholz D, Reimert R, Minh HD, Norinaga K, Janardhanan VM, Tischera S, Deutschmann O, J.Anal. Appl. Pyrol., 81, 148 (2008)

[14] Chung GY, McCoy BJ, Smith JM, Cagliostro DE, AIChE J., 39(11), 1834 (1993)

[15] Cho MS, Kim JW, Chung GY, Korean J. Chem. Eng., 13(5), 515 (1996)

[16] Vaidyaraman S, Lackey WJ, Agrawal PK, Carbon., 34(5), 609 (1996)

[17] Ziegler I, Fournet R, Marquaire PM, J. Anal. Appl. Pyrol., 73, 107 (2005)

[18] Tesner PA, Chemistry and physics of carbon., Edited by P. A. Thrower, 9, 173 (1973)