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Petroleum Chemistry

, Volume 57, Issue 12, pp 1161–1164 | Cite as

Hydrotreating of Vacuum Gas Oil on NiW/Al2O3 Catalysts Prepared with the Use of Chelating Agents

  • P. P. Minaev
  • M. S. Nikulshina
  • L. A. Gulyaeva
  • O. L. Ovsienko
  • V. A. Khavkin
  • O. I. Shmel’kova
  • P. A. Nikulshin
Article

Abstract

Alumina-based NiW catalysts have been prepared from 12-phosphotungstic heteropoly acid (PW12HPA), ammonium metatungstate (NH4)6H2[W12O40], and nickel hydroxide carbonate or nickel nitrate using citric acid (CA) or ethylenediaminetetraacetic acid (EDTA) as a chelating agent. The obtained samples have been studied by N2 adsorption, X-ray photoelectron spectroscopy, and high-resolution transmission electron microscopy techniques. The catalysts obtained using the PW12HPA and CA have been characterized by the greatest dispersion of active-phase particles, and the use of EDTA has provided the maximum proportion of NiWS. The hydrodesulfurizing activity of catalysts in the hydrotreating of vacuum gas oil has been found to decrease in the following order: Ni-CAPW/Al2O3 > Ni-CAW/Al2O3 > Ni-EDTA-W/Al2O3 > Ni-W/Al2O3, which in general correlates with the particle size of the active phase and the concentration of promoted active sites.

Keywords

hydrotreating vacuum gas oil NiW/Al2O3 NiWS citric acid EDTA NiWSN 

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Copyright information

© Pleiades Publishing, Ltd. 2017

Authors and Affiliations

  • P. P. Minaev
    • 1
  • M. S. Nikulshina
    • 1
  • L. A. Gulyaeva
    • 2
  • O. L. Ovsienko
    • 2
  • V. A. Khavkin
    • 2
  • O. I. Shmel’kova
    • 2
  • P. A. Nikulshin
    • 1
    • 2
  1. 1.Samara State Technical UniversitySamaraRussia
  2. 2.All-Russia Research Institute for Oil RefiningMoscowRussia

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