Abstract
The method of temperature-programmed reaction (TPR) with the spatial resolution of desorbed product molecules and the measurements of their average rates (〈v〉) are used to study the transformation of methyl radicals adsorbed on polycrystalline copper. In the products of TPR, only methane is found. The spatial distribution of its desorption flow (SDDF) is described by the equation CH3 ·. The results of SDDF and I/ I 0= cos16ϕ measurements agree with each other. Under these conditions, translationally excited methane molecules are desorbed from the copper surface. The energy of these molecules is 10–15 times higher than the thermal energy.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Fairbrother, D.H., Peng, X.-D., Stair, P.C., et al., Symp. on Methane and Alkane Conversion Chemistry, 207th ACS National Meeting, San Diego: American Chemical Society, 1994, p. 280.
Hall, R.B., Castro, M., Kim, C.-M., et al., Symp. on Methane and Alkane Conversion Chemistry, 207th ACS National Meeting, San Diego: American Chemical Society, 1994, p. 282.
Yang, Q.Y. and Ceyer, S.T., J. Vac. Sci. Technol. A, 1988, vol. 6, no. 3, p. 851.
Smudde, G.H., Jr. and Min Yu Stair, P.C., J. Am. Chem. Soc., 1993, vol. 115, no. 5, p. 1988.
Kislyuk, M.U., Tret'yakov, I.I., Savkin, V.V., and Sinev, M.Yu., Kinet. Katal., 2000, vol. 41, no. 1, p. 71.
Verhoef, R.W., Kelly, D., Mullins, C.B., and Weinberg, W.H., Surf. Sci., 1993, vol. 287/288, no. 1, p. 94.
McMaster, M.C. and Madix, R.J., J. Chem. Phys., 1993, vol. 98, no. 1, p. 12.
Kislyuk, M.U., Savkin, V.V., and Tret'yakov, I.I., Kinet. Katal., 2000, vol. 41, no. 1, p. 82.
Savkin, V.V., Kislyuk, M.U., and Sklyarov, A.V., Kinet. Katal., 1987, vol. 28, no. 6, p. 1409.
Kislyuk, M.U., Migulin, V.V., Savkin, V.V., et al., Kinet. Katal., 1990, vol. 31, no. 6, p. 1392.
Kislyuk, M.U., Savkin, V.V., Vlasenko, A.G., and Bartan, A.O., Izv. Akad Nauk., Ser. Khim., 1995, no. 1, p. 30.
Van Willigen, V., Phys. Lett. A, 1968, vol. 28, no. 2, p. 80.
Kislyuk, M.U. and Bakuleva, T.N., Izv. Akad. Nauk, Ser. Khim., 1990, no. 6, p. 2699.
Savkin, V.V. and Kislyuk, M.U., Kinet. Katal., 1997, vol. 38, no. 5, p. 793.
Kislyuk, M.U. and Rozanov, V.V., Kinet. Katal., 1995, vol. 36, no. 1, p. 89.
Trendelenburg, E.A., Ultrahochvakuum, Karlsruhe: G. Braun, 1963, p. 286.
Kori, M. and Halpern, B.L., Chem. Phys. Lett., 1986, vol. 129, no. 4, p. 407.
Mantell, D.A., Kunimori, K., Ryali, S., et al., Surf. Sci., 1986, vol. 172, no. 2, p. 281.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kislyuk, M.U., Savkin, V.V. & Tretyakov, I.I. Kinetic Energy of Methane Molecules Formed from Methyl Radicals Adsorbed on Copper. Kinetics and Catalysis 42, 539–542 (2001). https://doi.org/10.1023/A:1010533824907
Issue Date:
DOI: https://doi.org/10.1023/A:1010533824907