Abstract
The inverse kinetic problem of reducing sorption of molecular oxygen by a copper-containing electron-ion exchanger was formulated and solved taking into account the influence of the size of ultradisperse metal particles on the total rate of the process. These results were used to determine the inside diffusion coefficient of oxygen and rate constants for its interaction with disperse copper from the experimental kinetic curves. The diffusion coefficient obtained was compared with the result of an independent experiment. The kinetic parameters found were used to perform a theoretical analysis of the contributions of various factors influencing the rate of the process under consideration. The reason for the experimentally observed acceleration of the reducing sorption of oxygen by a high-dispersity electron-ion exchanger sample was shown to be an increase in the surface area of metal because of a decrease in the size of its particles and a comparatively high copper content in the surface layer of grains.
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References
Yu. A. Kokotov, P. P. Zolotarev, and G. E. El’kin, Theoretical Fundamentals of Ion Exchange (Khimiya, Leningrad, 1986) [in Russian].
Yu. P. Znamenskii and N. V. Bychkov, Kinetics of Ion Exchange Processes (Printer, Obninsk, 2000) [in Russian].
V. A. Shaposhnik and E. V. Butyrskaya, Kondens. Sredy Mezhfaznye Granitsy 5(3), 241 (2003).
A. I. Kalinichev, in Ion Exchange, Ed. by D. Muraviev, V. Gorshkov, and A. Warshawsky (M. Dekker, New York, 2000), p. 345.
T. A. Kravchenko and I. V. Aristov in Ion Exchange, Ed. by D. Muraviev, V. Gorshkov, and A. Warshawsky (M. Dekker, New York, 2000), p. 691.
D. V. Konev, T. A. Kravchenko, A. I. Kalinichev, et al., Zh. Fiz. Khim. 80(9), 1689 (2006) [Russ. J. Phys. Chem. 81 (2), 259 (2007)].
S. Aksu and F. M. Doyle, J. Electrochem. Soc. 148(1), B51 (2001).
T. A. Kravchenko, N. V. Sotskaya, D. V. Konev, et al., Zh. Fiz. Khim. 78(10), 1858 (2004) [Russ. J. Phys. Chem. 78 (10), 1637 (2004)].
V. D. Kol’ner and A. G. Zil’berman, Practical Microprobe Methods for Analysis of Metals and Alloys (Metallurgiya, Moscow, 1981) [in Russian].
D. V. Konev, T. A. Kravchenko, A. I. Kalinichev, et al., Zh. Fiz. Khim. 80(8), 1486 (2006) [Russ. J. Phys. Chem. 80 (8), 1309 (2006)].
L. I. Turchak, Fundamentals of Numerical Methods (Nauka, Moscow, 1987) [in Russian].
D. V. Konev, T. A. Kravchenko, A. I. Kalinichev, et al., Zh. Fiz. Khim. 82(3), 538 (2008).
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Original Russian Text © D.V. Konev, V.V. Fertikov, T.A. Kravchenko, A.I. Kalinichev, 2008, published in Zhurnal Fizicheskoi Khimii, 2008, Vol. 82, No. 8, pp. 1533–1538.
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Konev, D.V., Fertikov, V.V., Kravchenko, T.A. et al. The inverse problem of the kinetics of redox sorption taking into account the size of ultradisperse metal particles in an electron-ion exchanger. Russ. J. Phys. Chem. 82, 1363–1367 (2008). https://doi.org/10.1134/S0036024408080207
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DOI: https://doi.org/10.1134/S0036024408080207