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Preparation and Catalytic Activity of Co-Mo/γ-Al2O3 Catalyst for Hydro-desulfurization Reaction | ||
| Al-Qadisiyah Journal for Engineering Sciences | ||
| Volume 13, Issue 4, November 2020, Pages 295-300 PDF (909.38 K) | ||
| DOI: 10.30772/qjes.v13i4.703 | ||
| Authors | ||
| Mushtaq Albdiry1; Fouad K. Mahdi2; Abbas A. Diwan3 | ||
| 1Department of Materials Engineering, College of Engineering, University of Al-Qadisiyah, Iraq | ||
| 2Department of Chemical Engineering, College of Engineering, University of Al-Qadisiyah, Iraq | ||
| 3Nanotechnology and Advanced Materials Research center, College of Engineering, University of Al-Kufa, Iraq | ||
| 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 | ||
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