Experimental Study on Catalyst Deactivation by Nitrogen Compounds in a Hydroprocessing Reactor

Abid, Mohammad F.; Abdullah, Mohammed K.; Ali, Salah M.

doi:10.1007/s13369-017-2480-8

Cited by 5 publications

(7 citation statements)

References 14 publications

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“…Table 2 also shows the elemental practical analysis of the prepared CoMo/γ-Al2O3 catalyst where the percentage of the Mo active metal is 18.9 % that is fairly capable to handle the HDS reaction of the heavy naphtha. These findings are in conformance with previous published studies [14], [15].…”

Section: Physicochemical Properties Of the Prepared Catalystsupporting

confidence: 94%

“…From the figure, it can be seen that the sulphur percentage removed has decreased with the increasing of LHSV values at the same temperature. This behaviour is attributed to the increase in the LHSV values and hence increasing the flow rate of naphtha, leading to a decrease in the period time of contacting between the hydrogen gas and the oil naphtha inside the batch reactor with the presence of the catalyst [15]. Changing of the reaction temperature and the LHSV values plays a role in the efficient completion of the sulfidation process of the oxide state of the catalyst that results in the formation of MoS2 active site.…”

Section: Effect Of the Lhsvmentioning

confidence: 99%

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

Albdiry

Mahdi

Diwan

2020

QJES

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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.

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Section: Physicochemical Properties Of the Prepared Catalystsupporting

confidence: 94%

Section: Effect Of the Lhsvmentioning

confidence: 99%

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

Albdiry

Mahdi

Diwan

2020

QJES

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“…Gas oil was obtained from Al-Daura Refinery, Baghdad. Properties of (gas oil) utilized in the present study was shown in Table (1).…”

Section: Methodsmentioning

confidence: 99%

“…MoS2 was synthesized by a hydrothermal method using 1L stainless steel autoclave reactor (Model: Kurla (W), Mumbai-400070, India). A schematic of the synthesis setup was seen in Figure (1)…”

Section: Catalyst Preparationmentioning

confidence: 99%

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Synthesis and Characterization of Unsupported Catalyst for Gas Oil Desulfurization

Abid

Hamza

Ahmed

et al. 2019

QJES

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Unsupported MoS2 catalysts were synthesized for the hydrodesulfurization (HDS) of real feed gas oil using different temperatures and pressures. Hydrothermal method was utilized to prepare by using molybdenum trioxide and sodium sulfide. The characterization of the catalyst was identified by XRD, SEM, and BET techniques. It was found that BET surface and pore volume were positively affected by pressure and temperature that could improve the activity of MoS2. Kinetic analysis showed that HDS reaction over MoS2 follow pseudo-first order kinetics. Experimental results revealed that the HDS activity of the unsupported MoS2 catalyst was better than supported CoMo/Al2O3 catalyst under the same operating conditions.

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Study on Hydrodesulfurization of a Mixture of Middle Distillates

et al. 2017

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Experimental Study on Catalyst Deactivation by Nitrogen Compounds in a Hydroprocessing Reactor

Cited by 5 publications

References 14 publications

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

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

Synthesis and Characterization of Unsupported Catalyst for Gas Oil Desulfurization

Study on Hydrodesulfurization of a Mixture of Middle Distillates

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