Abstract
We present a detailed study of the pyrolytic synthesis of nanofibrous carbon materials (NCMs) from ethanol and various water-ethanol mixtures on a nickel catalyst at temperatures from 400 to 700°C. In the synthesis from 96% ethanol, the initial deposition rate increases with temperature, but this is accompanied by a substantial decrease in catalyst life. The addition of water to the reaction system considerably increases the catalyst life. One possible reason for this is that water vapor prevents carbonization of the catalyst particles. At the same time, above 600°C the rate of NCM deposition from a 50% water-ethanol mixture is considerably slower. At 550°C and lower temperatures, the rate of NCM deposition from water-ethanol mixtures (based on ethanol consumption) changes insignificantly. Our results demonstrate that NCMs can be synthesized even from very dilute (down to 10 vol %) aqueous ethanol solutions. The participation of water vapor in chemical processes that take place in the reaction zone is discussed.
Similar content being viewed by others
References
Red’kin, A.N. and Malyarevich, L.V., Growth of Carbon Nanowires and Nanotubes via Ultrarapid Heating of Ethanol Vapor, Neorg. Mater., 2003, vol. 39, no. 4, pp. 433–437 [Inorg. Mater. (Engl. Transl.), vol. 39, no. 4, pp. 353–356].
Red’kin, A.N., Malyarevich, L.V., and Vakulenko, A.A., Selected-Area Deposition of Fibrous Carbon Nanomaterials from Ethanol Vapor at Substrate Temperatures below 500°C, Neorg. Mater., 2005, vol. 41, no. 11, pp. 1311–1314 [Inorg. Mater. (Engl. Transl.), vol. 41, no. 11, pp. 1153–1156].
Li, Y.-L., Zhang, L.-H., Zhong, X.-H., and Windle, A.H., Synthesis of High Purity Single-Walled Carbon Nanotubes from Ethanol by Catalytic Gas Flow CVD Reactions, Nanotechnology, 2007, vol. 18, paper 225 604.
Okazaki, T. and Shinohara, H., Synthesis and Characterization of Single-Wall Carbon Nanotubes by Hot-Filament Assisted Chemical Vapor Deposition, Chem. Phys. Lett., 2003, vol. 376, pp. 606–611.
Maruyama, S., Kojima, R., Miyauchi, Y., et al., Low-Temperature Synthesis of High-Purity Single-Walled Carbon Nanotubes from Alcohol, Chem. Phys. Lett., 2002, vol. 360, pp. 229–234.
Maruyama, Y., Miyauchi, Y., Chiashi, S., and Maruyama, S., Characterization of Single-Walled Carbon Nanotubes Catalytically Synthesized from Alcohol, Chem. Phys. Lett., 2003, vol. 374, pp. 53–58.
Gruneis, A., Rummeli, M.H., Kramberger, C., et al., High Quality Double Wall Carbon Nanotubes with a Defined Diameter Distribution by Chemical Vapor Deposition from Alcohol, Carbon, 2006, vol. 44, pp. 3177–3182.
Pan, C. and Bao, Q., Well-Aligned Carbon Nanotubes from Ethanol Flame, J. Mater. Sci. Lett., 2002, vol. 21, pp. 1927–1929.
Red’kin, A.N., Kipin, V.A., and Malyarevich, L.V., Synthesis of Fibrous Carbon Nanomaterials from Ethanol Vapor on a Nickel Catalyst, Neorg. Mater., 2006, vol. 42, no. 3, pp. 284–287 [Inorg. Mater. (Engl. Transl.), vol. 42, no. 3, pp. 242–245].
Morgenstern, D.A. and Fornango, J.P., Low-Temperature Reforming of Ethanol over Copper-Plated Raney Nickel: A New Route to Sustainable Hydrogen for Transportation, Energy Fuels, 2005, vol. 19, pp. 1708–1716.
Nasibulin, A.G., Brown, D.P., Queipo, P., et al., An Essential Role of CO2 and H2O during Single-Walled CNT Synthesis from Carbon Monoxide, Chem. Phys. Lett., 2006, vol. 417, pp. 179–184.
Yu, G., Gong, J., and Wang, S., Etching Effects of Ethanol on Multi-Walled Carbon Nanotubes, Carbon, 2006, vol. 44, pp. 1218–1224.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © A.N. Red’kin, V.A. Kipin, 2009, published in Neorganicheskie Materialy, 2009, vol. 45, no. 9, pp. 1057–1062.
Rights and permissions
About this article
Cite this article
Red’kin, A.N., Kipin, V.A. Vapor phase synthesis of nanofibrous carbon materials from water-ethanol mixtures. Inorg Mater 45, 982–987 (2009). https://doi.org/10.1134/S0020168509090076
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0020168509090076