Abstract
The effect of the supercritical fluid (SCF) present in the reaction system on the rate of a bimolecular reaction has been investigated theoretically. Calculations have been carried out in the framework of the theory of nonideal reaction rates in condensed phases. The intermolecular interactions of the nearest neighbors are described in the quasi-chemical approximation taking into account the short-order correlation effects. The competing effects of raising the reaction temperature (which increases the reaction rate) and raising the pressure by increasing the amount of SCF (which hinders the meeting of the reactants) are discussed. Increasing the proportion of SCF reduces the self-diffusion coefficient and increases the viscosity of the reaction mixture.
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Savage, P.E., Gopalan, S., Mizan, T.I., Martino, C.J., and Brock, E.E., AIChE J., 1995, vol. 41, no. 7, p. 1723.
Zalepugin, D.Yu., Til’kunova, N.A., Chernyshova, I.V., and Polyakov, V.S., Sverkhkrit. Flyuidy: Teor. Prakt., 2006, vol. 1, no. 1, p. 27.
Bogdan, V.I., Koklin, A.E., and Kazanskii, V.B., Sverkhkrit. Flyuidy: Teor. Prakt., 2006, vol. 1, no. 2, p. 5.
Glasstone, S., Laidler, K.J., and Eyring, H., The Theory of Rate Processes, New York: Princeton Univ., 1941.
Temkin, M.I., Zh. Fiz. Khim., 1950, vol. 24, p. 1312.
Kiperman, S.L., Vvedenie v kinetiku geterogennykh kataliticheskikh reaktsii (Introduction to the Kinetic of Heterogeneous Catalytic Reactions), Moscow: Nauka, 1964.
Kiperman, S.L., Osnovy khimicheskoi kinetiki v geterogennom katalize (Fundamentals of Chemical Kinetics in Heterogeneous Catalysis), Moscow: Khimiya, 1979.
Galkin, A.A. and Lunin, V.V., Usp. Khim., 2005, vol. 74, no. 1, p. 24.
Kruse, A. and Dinjus, E., J. Supercrit. Fluids, 2007, vol. 39, p. 362.
Franck, E.U., Ber. Bunsen-Ges. Phys. Chem., 1984, vol. 88, p. 829.
Rabinovich, A.B. and Tovbin, Yu.K., Izv. Akad. Nauk, Ser. Khim., 2010, no. 10, p. 1815.
Tovbin, Yu.K., Zh. Fiz. Khim., 1981, vol. 55, no. 2, p. 273.
Tovbin, Yu.K., Kinet. Katal., 1982, vol. 23, no. 4, p. 821.
Tovbin, Yu.K., Teoriya fiziko-khimicheskikh protsessov na granitse gaz-tverdoe telo (Theory of Physicochemical Processes at the Gas-Solid Interface), Moscow: Nauka, 1990.
Tovbin, Yu.K., Prog. Surf. Sci., 1990, vol. 34, nos. 1–4, p. 1.
Hill, T.L., Statistical Mechanics: Principles and Selected Applications, New York: McGraw-Hill, 1956.
Guggenheim, E.A., Mixtures, Oxford: Clarendon, 1952.
Shakhparonov, M.I., Vvedenie v molekulyarnuyu teoriyu rastvorov (Introduction to the Molecular Theory of Solutions), Moscow: Gostekhizdat, 1956.
Prigogine, I.R., The Molecular Theory of Solutions, Amsterdam: North-Holland, 1957.
Smirnova, N.A., Molekulyarnaya teoriya rastvorov (Molecular Theory of Solutions), Leningrad: Khimiya, 1987.
Temkin, M.I., Zh. Fiz. Khim., 1938, vol. 11, no. 2, p. 169.
Benson, S.W., The Foundations of Chemical Kinetics, New York: McGraw-Hill, 1960.
Eremin, E.N., Osnovy khimicheskoi kinetiki (Fundamentals of Chemical Kinetics), Moscow: Vysshaya Shkola, 1976.
Lemenovskii, D.A., Yurin, S.A., Timofeev, V.V., Popov, V.K., Bagratishvili, V.N., Gorbatyi, Yu.E., Brusov, G.P., and Lunin, V.V., Sverkhkrit. Flyuidy: Teor. Prakt., 2007, vol. 2, no. 4, p. 30.
Tovbin, Yu.K., Izv. Akad. Nauk, Ser. Khim., 2003, no. 4, p. 827.
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Original Russian Text © A.B. Rabinovich, Yu.K. Tovbin, 2011, published in Kinetika i Kataliz, 2011, Vol. 52, No. 4, pp. 483–492.
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Rabinovich, A.B., Tovbin, Y.K. Supercritical fluid effect on the rates of elementary bimolecular reactions. Kinet Catal 52, 471–479 (2011). https://doi.org/10.1134/S0023158411040148
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DOI: https://doi.org/10.1134/S0023158411040148