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Model-free kinetics applied to regeneration of coked alumina

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Abstract

Thermogravimetry is proposed to study the alumina catalyst regeneration deactivated by coke, after being used in the transformation of styrene in a fixed bed continuous flow reactor. The model-free kinetic approach has been applied to data for the thermal oxidation of carbonaceous deposits on the catalyst. The activation energy (E) was calculated as a function of a (conversion) and T (temperature), by using Vyazovkin model-free kinetic method, allowing to estimate time required to remove coke at a given temperature.

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Authors and Affiliations

  1. Departamento de Química, Universidade Federal do Rio Grande do Norte, C.P. 1662, 59072-970, Natal, RN, Brazil

    G. J. T. Fernandes, A. S. Araújo & V. J. Fernandes Jr.

  2. Hungarian Academy of Sciences, Budapest University of Technology and Economics, Research Group of Technical Analytical Chemistry, H-1111, Budapest, Szt. Gellért tér 4, Hungary

    Cs. Novák

Authors
  1. G. J. T. Fernandes
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  2. A. S. Araújo
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  3. V. J. Fernandes Jr.
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  4. Cs. Novák
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Fernandes, G.J.T., Araújo, A.S., Fernandes, V.J. et al. Model-free kinetics applied to regeneration of coked alumina. Journal of Thermal Analysis and Calorimetry 75, 687–692 (2004). https://doi.org/10.1023/B:JTAN.0000027163.44593.4a

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  • DOI: https://doi.org/10.1023/B:JTAN.0000027163.44593.4a

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