γ-Al2O3 supported NiMo nitride: Effect of phosphorus concentration on the HDN and HDS of heavy gas oil

PETR 125

Sundaramurthy Vedachalam, suv549@mail.usask.ca1, Ajay K. Dalai, ajay.dalai@usask.ca1, and John Adjaye, Adjaye.John@syncrude.com2. (1) Catalysis and Chemical Reaction Engineering Laboratories, Department of Chemical Engineering, University of Saskatchewan, Saskatoon, SK S7N 5A9, Canada, (2) Edmonton Research Centre, Syncrude Canada Ltd, 9421 - 17th Avenue, Edmonton, AB T6N 1H4, Canada
Phosphorous promoted γ-Al2O3 supported NiMo nitride catalysts with 0-2.5 wt. % P, 12 wt.% Mo and 3.0 wt. % Ni were synthesized and characterized by elemental analysis, surface area measurements and X-ray diffraction. XRD showed that P addition to NiMo/γ-Al2O3 nitride, increased the dispersion of Mo nitride phase. The hydrodenitrogenation (HDN) and hydrodesulfurisation (HDS) activities of P promoted NiMo/γ-Al2O3 nitride catalysts were performed in trickle bed reactor using heavy gas oil (HGO) derived from Athabasca bitumen at the temperature, pressure, LHSV and H2/feed ratio of 385°C, 8.8 MPa, 1 h-1 and 600 ml/ml respectively. P is found to be an efficient HDN promoter, and enhanced the HDN activity of NiMo/γ-Al2O3 nitride. The optimum HDN of HGO was obtained with 1.5 wt.% P. The P addition to NiMo/γ-Al2O3nitride showed no influence on the HDS of HGO.The partial sulfidation of NiMo nitride was observed during HDS of HGO.
 

Chemistry of Petroleum and Emerging Technologies
9:00 AM-12:00 PM, Thursday, August 23, 2007 Boston Park Plaza -- White Hill Rm, Oral

Division of Petroleum Chemistry

The 234th ACS National Meeting, Boston, MA, August 19-23, 2007