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the effects of support acidity on quinoline and indole hydrodenitrogenation - a detailed kinetic study

M. Tayakout-Fayolle
G. D. Pirngruber
  • Function : Author
F. Chainet
  • Function : Author

Abstract

A detailed kinetic modeling including the liquid-vapor mass transfer was proposed to estimate kinetic and adsorption constants in complex reaction scheme and discriminate the support acidity effects on quinoline and indole HDN. The catalytic tests were carried out in a batch reactor, over two sulfide catalysts: NiMo(P)/γ-Al2O3 and NiMo(P)/SiO2-Al2O3 (ASA). Over both catalysts, the hydrogenation of aromatic ring of nitrogen compounds is the rate determining step of the main reaction pathway. The NiMo(P)/ASA exhibited higher rate constants for this step and denitrogenation steps (without ring opening). The adsorption constants of all nitrogen compounds were compared. As expected, nitrogen compounds adsorbed more strongly on NiMo(P)/ASA than Al2O3 counterpart. Quinoline showed a strong inhibiting effect on indole HDN whereas the inhibiting effect of indole on quinoline HDN was negligible over NiMo(P)/Al2O3 and slightly more important over NiMo(P)/ASA.
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Dates and versions

hal-01330797 , version 1 (13-06-2016)

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  • HAL Id : hal-01330797 , version 1

Cite

M. Nguyen, C. Geantet, M. Tayakout-Fayolle, G. D. Pirngruber, F. Chainet. the effects of support acidity on quinoline and indole hydrodenitrogenation - a detailed kinetic study. 24th International Symposium on Chemical Reaction Engineering, Jun 2016, Minneapolis United States. ⟨hal-01330797⟩
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