Interaction of kinetics, diffusion and geometric structure of pore networks in catalyst supports - A percolation theoretical approach to hydrodemetallation

Christina Rieckmann, Tina Düren, Frerich J. Keil

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14 Citations (Scopus)

Abstract

A detailed analysis of geometric parameters of a catalyst pellet for a hydrodemetallation reaction was carried out. A three-dimensional network of interconnected cylindrical pores was taken as a pore model. The change of the pore space with time was analysed by a cluster counting algorithm. It turned out that the reaction continues for a long time after the percolation threshold has passed. In this example, the radii of macropores are the most important parameters. Insights into the importance of different geometric parameters on the catalyst performance could be obtained, which, in principle, cannot be obtained by continuum models.

Original languageEnglish
Pages (from-to)137-145
Number of pages9
JournalHungarian Journal of Industrial Chemistry
Volume25
Issue number2
Publication statusPublished - 1 Dec 1997

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Catalyst supports
Catalysts
Kinetics

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)
  • Chemistry (miscellaneous)

Cite this

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AB - A detailed analysis of geometric parameters of a catalyst pellet for a hydrodemetallation reaction was carried out. A three-dimensional network of interconnected cylindrical pores was taken as a pore model. The change of the pore space with time was analysed by a cluster counting algorithm. It turned out that the reaction continues for a long time after the percolation threshold has passed. In this example, the radii of macropores are the most important parameters. Insights into the importance of different geometric parameters on the catalyst performance could be obtained, which, in principle, cannot be obtained by continuum models.

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