The Effect of Boron on the Activity of Hydrotreating Co-Mo/Al2O3 Catalyst

CATEGORY: HYDROTREATING
Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, Volume 35, Issue 7, 2013, pages 659-670, DOI:10.1080/15567036.2010.485171
The Effect of Boron on the Activity of Hydrotreating Co-Mo/Al2O3 Catalyst
L. K. Mohameda, F. Y. El Kadya & S. A. Shabana
a Petroleum Refining Division, Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, Egypt
Abstract
Researchers prepared a series of aluminum borate with varying boria content to use as supports of Co-Mo catalysts. They characterized the series with respect to surface area, pore volume, and pore size distribution. They employed the temperature programmed reduction method to monitor molybdenum oxide-support interaction. Results revealed that the addition of boria concentration decreases the reducibility of the catalyst, reduction peak increase with increasing B₂O₃ content.
Researchers performed hydrodesulfurization of atmospheric gas oil over the presulfided catalysts in a bench-scale cata-test unit at 320–360°C and LHSV from 1 to 3 h⁻¹. Hydrogen pressure and H₂/HC feed ratio were kept constant at 4 MPa and 300 l/l, respectively. All Co-Mo-/AB catalysts are much more active than the conventional Co-Mo/Al₂O₃ catalyst on hydrodesulfurization reactions. The dispersion of the active sulfide phase of Co-Mo/Al₂O₃ catalyst increased by the incorporation of adequate boria content. They observed the optimum B₂O₃ content in the vicinity of 4 wt%.
Full Text Source (Subscription or Fee): http://www.tandfonline.com/doi/abs/10.1080/15567036.2010.485171