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Communication Dans Un Congrès Année : 2013

Vacuum gas oil hydrocracking performance of bifunctional Mo/ Y Zeolite catalysts in a semi-batch reactor

R. Henry
  • Fonction : Auteur
M. Tayakout-Fayolle
P. Afanasiev
C. Lorentz
G. Lapisardi
  • Fonction : Auteur
G. Pirngruber
  • Fonction : Auteur

Résumé

A new approach has been developed to characterize bifunctional catalysts in a complex matrix of hydrotreated vacuum gas oil, 370°C+ using a batch reactor test. Triphasic reactions were carried out in a reactor equipped with a stationary basket, hydrogen injection and products sampling systems. Bifunctional catalysts containing different relative amounts of alumina-supported NiMo sulfide and zeolite were tested at 400°C under 120 bars over different reaction times. The repeatability of the test conditions was validated and the lack of mass transfer limitations at phase interfaces was confirmed. Gas and liquid samples were analyzed by one and two-dimensional gas chromatography (2D-GCGCxGC) respectively to obtain quantitative distributions of linear and branched paraffins, olefins, naphthenes and aromatics. The details of the products distribution provided by the chromatography were analyzed using model kinetic mechanisms of bifunctional catalysis. It has been established that the limiting step defining the total conversion is scission of the hydrocarbon chains on zeolite sites. The increase of the molybdenum to zeolite ratio provided an improvement of selectivity to middle distillate (150-370°C)
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Dates et versions

hal-00832438 , version 1 (10-06-2013)

Identifiants

  • HAL Id : hal-00832438 , version 1

Citer

R. Henry, M. Tayakout-Fayolle, P. Afanasiev, C. Lorentz, G. Lapisardi, et al.. Vacuum gas oil hydrocracking performance of bifunctional Mo/ Y Zeolite catalysts in a semi-batch reactor. International Symposium on Advances in Hydroprocessing of Oil Fractions, Jun 2013, Acapulco, Mexico. ⟨hal-00832438⟩
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