Abstract
External-diffusion gas-phase mass transfer in the catalytic hydrogenation of hydrocarbons was studied theoretically and experimentally. For the model of a stationary diffusion film around a catalyst pellet, an approximate solution of Maxwell-Stefan equations was obtained, which allowed the multicomponent diffusion problem to be reduced to a Fick equation involving a pseudobinary effective diffusion coefficient. A comparison was made between the theoretical and experimental results for the hydrogenation of α-methylstyrene, octene, and their mixtures.
Similar content being viewed by others
References
Buben, N.Ya., Platinum Filament Temperature during Oxidation of Hydrogen and Ammonia,Sbornik rabot po fizicheskoi khimii (Collected Works in Physical Chemistry), Moscow: Akad. Nauk SSSR, 1947.
Frank-Kamenetskii, D.A.,Diffuziya i teploperedacha vkhimicheskoi kinetike (Diffusion and Heat Transfer in Chemical Kinetics), Moscow: Nauka, 1987.
Graham, R.R., Vidaurri, F.C., and Gully, A.J., Catalytic Dehydrogenation of Cyclohexane: A Transport Con-trolled Model,AIChEJ., 1968, vol. 14, no. 3, p. 473.
Kenig, E.Ya., Mass- and Heat-Transfer Kinetics in the Separation of Multicomponent Mixtures,Teor. Osn. Khim. Tekhnol., 1994, vol. 28, no. 3, p. 223; no. 4, p. 348.
Turevskii, E.N. and Aleksandrov, I.A., Calculations on Nonequimolar Diffusion in Multicomponent Mixtures,Inzh.-Fiz. Zh., 1972, vol. 23, no. 6, p. 1012.
Krishna, R. and Standart, G.L., A Multicomponent Film Model Incorporating a General Matrix Method of Solu-tion to the Maxwell-Stefan Equations,AIChE J., 1976, vol. 22, no. 2, p. 383.
Katalov, A.I., Calculation of Diffusion Fluxes in a Mul-ticomponent Gas Mixture during Heterogeneous Chem-ical Reaction,Teor. Osn. Khim. Tekhnol., 1986, vol. 20, no. 3, p. 402.
Katalov, A.I. and Mazaev, V.N., Simulation of Non-equimolar Multicomponent Diffusion Accompanied by Heterogeneous Chemical Reaction,Teor. Osn. Khim. Tekhnol., 1989, vol. 23, no. 5, p. 669.
Watson, P. and Harold, M., Dynamic Effects of Vapor-ization with Exothermic Reaction in a Porous Catalytic Pellet,AIChEJ., 1993, vol. 39, no. 6, p. 989.
Germain, A.H., Lefebvre, A.G., and l’Homme, G.A., Experimental Study of a Catalytic Trickle-Bed Reactor,Adv. Chem. Ser., 1974, no. 133, p. 164.
Chen, S.Y., McCoy, B.J., and Smith, J.M., Dynamic Studies of Catalyst Poisoning: Effect on Adsorption and Surface Reaction Rates for Hydrogenation of α-Methyl-styrene on Pd/Al2O3,AIChE J., 1986, vol. 32, no. 12, p. 2056.
Kutateladze, S.S. and Borishanskii, V.M.,Spravochnik po teploperedache (Handbook of Heat Transfer), Moscow: Energiya, 1959.
Reid, R.C., Prausnitz, J.M., and Sherwood, T.K.,The Properties of Gases and Liquids, New York: McGraw-Hill, 1977. Translated under the titleSvoistva gazov i zhidkostei, Leningrad: Khimiya, 1982.
Vargaftik, N.B.,Spravochnik po teplofizicheskim svoist-vam gazov i zhidkostei (Heat-Transfer Properties of Gases and Liquids: A Handbook), Moscow: Nauka, 1972.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kirillov, V.A., Kuzin, N.A., Kulikov, A.V. et al. External diffusion control in the gas-phase dehydrogenation of hydrocarbons on a catalyst pellet. Theor Found Chem Eng 34, 475–484 (2000). https://doi.org/10.1007/BF02827392
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02827392