Al-Qadisiyah Journal for Engineering Sciences

Preparation and Catalytic Activity of Co-Mo/γ-Al2O3 Catalyst for Hydro-desulfurization Reaction

Authors

Mushtaq Albdiry 1
Fouad K. Mahdi 2
Abbas A. Diwan 3

1 Department of Materials Engineering, College of Engineering, University of Al-Qadisiyah, Iraq

2 Department of Chemical Engineering, College of Engineering, University of Al-Qadisiyah, Iraq

3 Nanotechnology and Advanced Materials Research center, College of Engineering, University of Al-Kufa, Iraq

https://doi.org/10.30772/qjes.v13i4.703
Abstract
In this study, a bimetallic CoMo spicy supported on γ-Al2O3 heterogeneous catalyst was successfully prepared by an incipient wetness impregnation for Hydrodesulphurization (HDS) reaction of An-Najaf oil refinery heavy naphtha. The structural characteristics of the prepared 5Co-15Mo/γ-Al2O3 catalyst were evaluated by Scanning Electron Microscopy (SEM) and X-Ray Powder Diffraction (XRD) spectroscopies. The surface area, pore volume and pore size were determined by a Brunauer–Emmett–Teller (BET) method. The catalytic activity in the removal of sulphur compound from a heavy naphtha through the HDS at four different reaction temperatures (523, 548, 573, 598 °K) and four different liquid hourly space velocities (3, 4, 5, and 6 hr-1) under a constant ratio of 150 mL H2/1 mL naphtha and a hydrogen gas pressure of 1.5 MPa, has revealed that the prepared catalyst was efficient to remove 82 % of sulphur at 598 °K temperature and 3 hr-1 time. The enhanced selectivity of the CoMo/γ-Al2O3 catalyst through a hydro-treating reaction ascribes to the bimetallic-support interaction and the dispersion of MoS2 particles that leaded to a large edge-to-corner ratio of CoMoS slabs.

Keywords

Hydrodesulphurization
Impregnation method
Alumina support
Bimetallic catalyst
Al-Qadisiyah Journal for Engineering Sciences
Volume 13, Issue 4
Autumn 2020
Pages 295-300

  • Receive Date 19 June 2023

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