Wet peroxide oxidation of phenol over Cu-ZSM-5 catalyst in a flow reactor. Kinetics and diffusion study

Oxana P. Taran, Andrey Nikolaevich Zagoruiko, Artemiy B. Ayusheev, Svetlana A. Yashnik, Roman V. Prihod'ko, Zinfer R. Ismagilov, Vladislav V. Goncharuk, Valentin N. Parmon

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24 Citations (Scopus)

Abstract

The wet peroxide oxidation of phenol over the extruded 1.5%Cu/(80%H-ZSM-5 + 20%Al2O3) catalysts of the different geometric forms and sizes (cylinders with diameters 1, 2, 3 mm, trefoils, spheres and monoliths with size of channels 1.0 × 1.0, 1.5 × 1.5 mm) was studied in a flow reactor. The geometric form and size of the catalyst granules exert a pronounced effect on the apparent kinetics of the process. The highest efficiency toward phenol destruction was observed for the catalysts with a greater geometric surface area (trefoils and monolith with high channel density). The conversions of phenol and TOC at flow rate 5 mL min-1 equal to 100 and ∼90% were achieved over these catalysts. Application of the spherical shape catalyst with lowest geometric surface gave only 80% conversion of phenol at the same reaction conditions. The proposed mathematical model of the process, accounting for internal and external diffusion limitations on the base of the pseudo-first order simplification of the apparent kinetic rates, provide reasonably accurate description of the experimental data and reproducing all important process regularities.

Original languageEnglish
Pages (from-to)108-115
Number of pages8
JournalChemical Engineering Journal
Volume282
DOIs
Publication statusPublished - 15 Dec 2015

Keywords

  • Catalytic wet peroxide oxidation
  • Cu-ZSM-5
  • Diffusion
  • Flow reactor
  • Kinetics
  • Phenol

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)
  • Industrial and Manufacturing Engineering
  • Environmental Chemistry

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    Taran, O. P., Zagoruiko, AN., Ayusheev, A. B., Yashnik, S. A., Prihod'ko, R. V., Ismagilov, Z. R., Goncharuk, V. V., & Parmon, V. N. (2015). Wet peroxide oxidation of phenol over Cu-ZSM-5 catalyst in a flow reactor. Kinetics and diffusion study. Chemical Engineering Journal, 282, 108-115. https://doi.org/10.1016/j.cej.2015.02.064