Skip to main content
Log in

External diffusion control in the gas-phase dehydrogenation of hydrocarbons on a catalyst pellet

  • Published:
Theoretical Foundations of Chemical Engineering Aims and scope Submit manuscript

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.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  1. 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.

    Google Scholar 

  2. Frank-Kamenetskii, D.A.,Diffuziya i teploperedacha vkhimicheskoi kinetike (Diffusion and Heat Transfer in Chemical Kinetics), Moscow: Nauka, 1987.

    Google Scholar 

  3. 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.

    Article  CAS  Google Scholar 

  4. 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.

    CAS  Google Scholar 

  5. Turevskii, E.N. and Aleksandrov, I.A., Calculations on Nonequimolar Diffusion in Multicomponent Mixtures,Inzh.-Fiz. Zh., 1972, vol. 23, no. 6, p. 1012.

    CAS  Google Scholar 

  6. 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.

    Article  CAS  Google Scholar 

  7. 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.

    CAS  Google Scholar 

  8. 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.

    CAS  Google Scholar 

  9. 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.

    Article  CAS  Google Scholar 

  10. 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.

  11. 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.

    Article  CAS  Google Scholar 

  12. Kutateladze, S.S. and Borishanskii, V.M.,Spravochnik po teploperedache (Handbook of Heat Transfer), Moscow: Energiya, 1959.

    Google Scholar 

  13. 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.

    Google Scholar 

  14. Vargaftik, N.B.,Spravochnik po teplofizicheskim svoist-vam gazov i zhidkostei (Heat-Transfer Properties of Gases and Liquids: A Handbook), Moscow: Nauka, 1972.

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints 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

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02827392

Keywords

Navigation