Abstract
The in situ 1H NMR technique was used to study the propagation of chemical waves during the liquid-phase Belousov–Zhabotinsky (BZ) reaction in a model fixed bed of grains consisting of chemically inert glass beads or quartz sand. The propagation of autocatalytic chemical waves in this bed is determined by the size of pores between the grains. The rate of wave front propagation is independent of the size of the grains involved in this bed but is much lower than that in the bulk of the homogenous aqueous phase. This may be attributed to the difference in the effective diffusion coefficients in the homogeneous liquid phase and in the bed.
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REFERENCES
Imbihl, R. and Ertl, G., Chem. Rev., 1995, vol. 95, p. 697.
Boreskov, G.K., Geterogennyi kataliz (Heterogeneous Catalysis), Moscow: Nauka, 1988.
Bazhin, N.M., Ivanchenko, V.I., and Parmon, V.N., Termodinamika dlya khimikov (Thermodynamics for Chemists), 2000, Moscow: Khimiya.
Khrustova, N., Michailov, A.S., and Imbihl, R., J. Phys. Chem., 1997, vol. 107, p. 2096.
Slin'ko, M.M., Ukharskii, A.A., Reskov, N.V., and Jaeger, N.I., Catal. Today, 2001, vol. 70, p. 341.
Gao, Y., Cross, A.R., Amstrong, R.L., J. Phys. Chem., 1996, vol. 100, p. 10159.
Tzalmona, A., Amstrong, R.L., Menzinger, M., Cross, A., and Lemaire, C., Chem. Phys. Lett., 1990, vol. 174, p. 199.
Koptyug, I.V., Fenelonov, V.B., Khitrina, L.Yu., Sagdeev, R.Z., and Parmon, V.N., J. Phys. Chem., 1998, vol. 102, p. 3090.
Koptyug, I.V., Kabanikhin, S.I., Iskakov, K.T., Fenelonov, V.B., Khitrina, L.Yu., Sagdeev, R.Z., and Parmon, V.N., Chem. Eng. Sci., 2000, vol. 55, p. 1559.
Sovremennye podkhody k issledovaniyu i opisaniyu protsessov sushki poristykh tel (Modern Approaches to the Study and Description of Processes of Drying of Porous Bodies), Parmon, V.N., Ed., Novosibirsk: Ross. Akad. Nauk, 2001, p. 300.
Koptyug, I.V., Kulikov, A.V., Lysova, A.A., Kirillov, V.A., Parmon, V.N., and Sagdeev, R.Z., J. Am. Chem. Soc., 2002, vol. 124, p. 9684.
Koptyug, I.V., Kulikov, A.V., Lysova, A.A., Kirillov, V.A., Sagdeev, R.Z., and Parmon, V.N., Dokl. Akad. Nauk, 2002, vol. 385, no.2, p. 205.
Kuhn, W., Angew. Chem., Int. Ed. Engl., 1990, vol. 29, p. 1.
Talagala, S.L. and Lowe, I.J., Concepts Magn. Reson., 1991, vol. 3, p. 145.
Koptyug, I.V. and Sagdeev, R.Z., Usp. Khim., 2002, vol. 71, no.7, p. 672.
Koptyug, I.V. and Sagdeev, R.Z., Usp. Khim., 2002, vol. 71, no.10, p. 899.
Field, R. and Burger, M., Oscillations and Traveling Waves in Chemical Systems, New York: Wiley, 1983.
Aerov, M.A., Todes, O.M., and Narinskii, D.A., Apparaty so statsionarnym zernistym sloem (Apparatus with Fixed Granular Layer), Leningrad: Khimiya, 1979.
Kuhnert, L., Krug, H.J., and Pohlmann, L., J. Phys. Chem., 1985, vol. 89, p. 2022.
Toth, A., Gaspar, V., and Showalter, K., J. Phys. Chem., 1994, vol. 98, p. 522.
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Koptyug, I.V., Lysova, A.A., Parmon, V.N. et al. In situ 1H NMR Imaging Study of Propagation of Concentration Waves in an Autocatalytic Reaction in a Fixed Granular Bed. Kinetics and Catalysis 44, 401–407 (2003). https://doi.org/10.1023/A:1024451103734
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DOI: https://doi.org/10.1023/A:1024451103734