Abstract
Kinetic features for the carbon erosion (CE) of bulk NiCr alloy (NiCrA, nichrome wire 0.1 mm in diameter) were studied at 450–750°C under conditions of the catalytic decomposition of 1,2-dichloroethane vapor in a reductive atmosphere (H2). It was found that the CE process takes place more efficiently in the temperature range from 550 to 720°C, leading to the disintegration of the bulk alloy with the formation of a fibrous carbon product. The apparent activation energy of the process was estimated to be 16.8 ± 0.9 kJ/mol. The realization of CE is hampered outside the optimal temperature range because of chlorination (T < 500°C) or blocking of the alloy’s surface by carbonaceous deposits (T > 720°C). The kinetics of the process is characterized by the existence of an induction period, whose duration decreases with an increasing temperature (from 40 min at 550°C to 6 min at 710°C). According to scanning and transmission electron microscopy data, the submicron metallic particles (0.2–0.4 μm) catalyzing the growth of carbon fibers with disordered structure result from the disintegration of the NiCr alloy.
Similar content being viewed by others
References
Voronko, M.G., Tatarova, L.A., Trofimova, K.S., Verkhozina, E.I., and Khaliullin, A.K., Khim. Interesah Ustoich. Razvit., 2001, no. 9, p. 393.
Bauman, Yu.I., Mishakov, I.V., Vedyagin, A.A., Dmitriev, S.V., Mel’gunov, M.S., and Buyanov, R.A., Catal. Ind., 2012, vol. 4, no. 4, p. 261.
Mishakov, I.V., Bauman, Yu.I., Korneev, D.V., and Vedyagin, A.A., Top. Catal., 2013, vol. 56, p. 1026.
Rudnev, A.V., Lysakova, A.S., Plyusnin, P.E., Bauman, Yu.I., Shubin, Yu.V., Mishakov, I.V., Vedyagin, A.A., and Buyanov, R.A., Inorg. Mater., 2014, vol. 50, no. 6, p. 566.
Herring, D.H. http://www.heat-treat-doctor.com.
Grabke, H.J., Krajak, R., and Nava Paz, J.C., Corros. Sci., 1993, vol. 35, p. 1141.
Nava Paz, J.C. and Grabke, H.J., Oxid. Met., 1993, vol. 39, p. 437.
Chambers, A. and Baker, R.T.K., J. Phys. Chem. B, 1997, vol. 101, p. 1621.
Grabke, H.J., Spiegel, M., and Zahs, A., Mater. Res., 2004, vol. 7, p. 89.
Grabke, H.J., Moszynski, D., Müller-Lorenz, E.M., and Schneider, A., Surf. Interface Anal., 2002, vol. 34, p. 369.
Schneider, A. and Grabke, H.J., Mater. Corros., 2003, vol. 54, p. 793.
Patent WO2003051771 A1, 2003.
Chun, C.M., Mumford, J.D., and Ramanarayanan, T.A., J. Electrochem. Soc., 2003, vol. 152, p. B348.
Chun, C.M. and Ramanarayanan, T.A., Oxid. Met., 2004, vol. 62, p. 71.
Chun, C.M., Mumford, J.D., and Ramanarayanan, T.A., J. Electrochem. Soc., 2002, vol. 149, p. B76.
Chun, C.M., Bhargava, G., and Ramanarayanan, T.A., J. Electrochem. Soc., 2007, vol. 154, p. 231.
Nerushev, O.A., Novopashin, S.A., and Smovzh, D.V., Nanotechnol. Russ., 2008, vol. 3, nos. 7–8, p. 464.
Bauman, Yu.I., Mishakov, I.V., Buyanov, R.A., Vedyagin, A.A., and Volodin, A.M., Kinet. Catal., 2011, vol. 52, no. 4, p. 547.
Mishakov, I.V., Chesnokov, V.V., Buyanov, R.A., and Pakhomov, N.A., Kinet. Catal., 2001, vol. 42, no. 4, p. 543.
Motojima, S. and Chen, X., Bull. Chem. Soc. Jpn., 2007, vol. 80, p. 449.
Kuzuya, C., In-Hwang, W., Hirako, S., Hishikawa, Y., and Motojima, S., Chem. Vap. Deposition, 2002, vol. 8, p. 57.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © Yu.I. Bauman, I.V. Mishakov, A.A. Vedyagin, A.N. Serkova, A.A. Gromov, 2017, published in Kinetika i Kataliz, 2017, Vol. 58, No. 4, pp. 473–480.
The article was translated by the authors.
Rights and permissions
About this article
Cite this article
Bauman, Y.I., Mishakov, I.V., Vedyagin, A.A. et al. Kinetic features of the carbon erosion of a bulk NiCr alloy during the catalytic decomposition of 1,2-dichloroethane. Kinet Catal 58, 448–454 (2017). https://doi.org/10.1134/S0023158417040036
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0023158417040036