Investigation of hydrodearomatization of gas oils on noble metal/support catalysts

Gábor Nagy, György Pölczmann, D. Kalló, J. Hancsók

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Due to the more and stricter requirements of diesel fuels, one of the most important key factors of production of modern diesel fuel blending components is the two-stage deep hydrodesulphurization and hydrodearomatization, where in the second step noble metal catalysts are used for the deep hydrodearomatization of prehydrogenated feeds. In this paper, the results of hydrodearomatization of different sulphur- and nitrogen containing real gas oil fractions on PtPd/USY zeolite, PtPd/amorphous SiO2-Al2O3 and PtPd/γ-Al2O3 catalysts are presented. In case of PtPd/USY catalyst, the effect of Pd/Pt atomic ratio on the sulphur tolerance was also investigated, additionally, the effect of sulphur and nitrogen content of the feeds and the process conditions on HDA, HDN and HDS activities were studied. The main goal of our experiments was to find a bimetallic PtPd/USY catalyst possessing Pd/Pt mass ratio of 2:1 (Pd/Pt atomic ratio of 3.7:1), which was suitable for the deep hydrodearomatization of relatively high sulphur (up to 300 mg S/kg) and nitrogen (up to 200 mg N/kg) containing feeds. In case of optimal process parameters (T = 310 °C, P = 60 bar, LHSV = 1.0-1.5 h-1, H2/hydrocarbon volume ratio = 600 N m3/m3), low total aromatic (

Original languageEnglish
Pages (from-to)307-314
Number of pages8
JournalChemical Engineering Journal
Volume154
Issue number1-3
DOIs
Publication statusPublished - Nov 15 2009

Fingerprint

Gas oils
Precious metals
Sulfur
Catalyst supports
catalyst
sulfur
Catalysts
Nitrogen
oil
metal
Diesel fuels
gas
nitrogen
Zeolites
Hydrocarbons
zeolite
tolerance
hydrocarbon
experiment
Experiments

Keywords

  • Gas oil
  • Hydrodearomatization
  • Hydrodesulphurization
  • Noble metal/support catalyst

ASJC Scopus subject areas

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

Cite this

Investigation of hydrodearomatization of gas oils on noble metal/support catalysts. / Nagy, Gábor; Pölczmann, György; Kalló, D.; Hancsók, J.

In: Chemical Engineering Journal, Vol. 154, No. 1-3, 15.11.2009, p. 307-314.

Research output: Contribution to journalArticle

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