Gentle hydrotreatment of shale oil in fixed bed over Ni-Mo/Al2O3 for upgrading

Zhang, Mengjuan; Wang, Chao; Wang, Kangjun; Han, Zhennan; Bello, Suleiman Sabo; Guan, Guoqing; Abudula, Abuliti; Xu, Guangwen

doi:10.1016/j.fuel.2020.118495

Cited by 15 publications

(5 citation statements)

References 40 publications

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“…Two sets of doublets can be obtained, with two peaks corresponding to the Co 2p 1/2 and Co 2p 3/2 signals of Co 2+ and the other two ascribed to the Co 2p 1/2 and Co 2p 3/2 signals of the Co 3+ oxidation state, respectively. , The high-resolution XPS Mo 3d spectra in Figure b display two broad signals with splitting widths of ca. 3.2 eV, which can be primarily ascribed to Mo 3d 5/2 and Mo 3d 3/2 of Mo 6+ , respectively . Additionally, the two small peaks at each sample can be attributable to the Mo 3d 5/2 and Mo 3d 3/2 of Mo 4+ .…”

Section: Resultsmentioning

confidence: 88%

“…3.2 eV, which can be primarily ascribed to Mo 3d 5/2 and Mo 3d 3/2 of Mo 6+ , respectively. 38 Additionally, the two small peaks at each sample can be attributable to the Mo 3d 5/2 and Mo 3d 3/2 of Mo 4+ . 39 The relative contents of different metal oxidation states can be obtained by measuring the integrated area of each peak with the fitted data.…”

Section: Resultsmentioning

confidence: 97%

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Coupled Interface and Oxygen-Defect Engineering in Co₃O₄/CoMoO₄ Heterostructures toward Active Oxidation of Ethylbenzene

Shi,

Wang,

et al. 2024

Inorg. Chem.

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The catalytic oxidation of ethylbenzene (EB) is a promising route to produce acetophenone (AcPO). Unfortunately, it remains a great challenge to achieve the highly efficient oxidation of EB under solvent-free conditions using molecular oxygen as the sole oxidant. In this contribution, we present a facile strategy to construct hierarchical oxygen vacancy-rich Co 3 O 4 /CoMoO 4 heterostructures (Vo-CCMO), which delivers a high yield value of 74.5% at 83.2% conversion of EB and selectivity of 89.6% to AcPO. Both experimental studies and theoretical calculations substantiate the important role of oxygen-defect engineering triggered by the modified chemistry environment at the interfaces between the biphasic phases, which contributes to the good catalytic performance. This work illustrates a promising paradigm for the exploit of advanced catalysts toward boosting EB oxidation reaction in a more practical way.

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Section: Resultsmentioning

confidence: 88%

Section: Resultsmentioning

confidence: 97%

Coupled Interface and Oxygen-Defect Engineering in Co₃O₄/CoMoO₄ Heterostructures toward Active Oxidation of Ethylbenzene

Shi,

Wang,

et al. 2024

Inorg. Chem.

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“…Catalysts used for modification are always inactivated by coke deposition, but in situ high-temperature treatment in the air effectively removes the coke from the catalyst surface to make it highly active after the devulcanization operation. Zhang et al [ 36 ] and Qiao et al [ 37 ] used Ni-Mo/Al 2 O 3 catalyst to conduct fixed-bed mild hydrotreating for shale oil. The results show that under the condition of catalytic hydrodesulfurization, the sulfur removal rate of shale oil is 84.6%, and the yield of upgraded high-quality oil is up to 96.2%.…”

Section: Research Progress On Catalytic Pyrolysis Of Oil Shalementioning

confidence: 99%

Progress in Catalytic Pyrolysis of Oil Shale

Pan

et al. 2021

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This paper briefly describes the research status of oil shale pyrolysis technology and the main factors affecting oil shale pyrolysis, with emphasis on four kinds of commonly used catalysts: The effects of natural minerals, metal compounds, molecular sixes, and supported catalysts on the pyrolysis of oil shale were discussed. The changes of the pyrolysis mechanism and product composition of oil shale with the addition of different catalysts were discussed. Finally, the development direction of preparation of new catalysts was discussed, in order to provide a prospect for the development and utilization of unconventional and strategic alternative energy resources around the world.

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“…All heavy metals are permanent poisons of catalysts and activity cannot be recovered by regeneration. [1][2][3][4][5][6][7][8][9][10][11][12] Naphtha catalytic hydrotreating accomplishes several reactions to prepare the naphtha charge for the downstream reformer and isomerization process with an increasingly strict sulfur specification. The main aim is to remove sulfur but denitrification, deoxygenation, and olefin saturation reactions occur simultaneously with desulfurization.…”

Section: Introductionmentioning

confidence: 99%

“…Also, the contaminant metals such as nickel, vanadium, arsenic, and mercury are adsorbed onto the hydrotreating catalysts surface up to an equilibrium level, which varies from metal to metal. All heavy metals are permanent poisons of catalysts and activity cannot be recovered by regeneration 1‐12 …”

Section: Introductionmentioning

confidence: 99%

Performance study of Ni, Co, and Mo catalysts supported on γ ‐Al ₂ O ₃ and HZSM5 in HDS reactions of mixed naphtha

Boroujeni

Irankhah

2021

Intl J of Energy Research

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catalysts were synthesized by the wetness impregnation technique. Field emission scanning electron microscopy, X-ray diffraction, and nitrogen physisorption methods were used for characterizing the prepared catalysts. The activity of the synthesized catalysts was studied by passing the mixed naphtha and H 2 over a fixed bed reactor with sulfiding process prior to HDS reactions at ambient pressure, 285 C, LHSV of 5.8 h À1 , and H 2 /HC volumetric ratio of 94. Ni, Co, and Mo with mass percent of 3.5 wt% were loaded on laboratorysynthesized γ-Al 2 O 3 and purchased HZSM5 supports. For promoted Ni Mo/ γ-Al 2 O 3 catalyst, 3.5 wt% Ni and 17 wt% Mo were impregnated on laboratory synthesized γ-alumina support, similar to the commercial industrial catalyst. Ultimately, the HDS reactions over the synthesized Ni Mo/γ-Al 2 O 3 decreased the total sulfur content of mixed naphtha from 430 to 25 ppm wt, as a synthesized catalyst with the best reactor performance and acceptable long-term stability. K E Y W O R D S hydrodesulfurization, mixed naphtha, Ni Mo/γ-Al 2 O 3 , sulfiding, total sulfur content Highlights • Ni/γ-Al 2 O 3 , Ni/HZSM5, Co/HZSM5, Mo/HZSM5, and Ni Mo/γ-Al 2 O 3 catalysts were synthesized and evaluated in HDS reactions of mixed naphtha. • The catalytic performance and characteristic for prepared catalysts were compared with a commercial industrial catalyst supplied by AXENS company. • Synthesized 3.5Ni-17Mo/γ-Al 2 O 3 showed the best catalytic performance with HDS conversion of 94.2%. • All reactor tests were performed according to the operating conditions of an AXENS licensed industrial Naphtha Hydro-Treating (NHT) unit, except process pressure, which was applied atmospheric.

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Gentle hydrotreatment of shale oil in fixed bed over Ni-Mo/Al2O3 for upgrading

Cited by 15 publications

References 40 publications

Coupled Interface and Oxygen-Defect Engineering in Co₃O₄/CoMoO₄ Heterostructures toward Active Oxidation of Ethylbenzene

Coupled Interface and Oxygen-Defect Engineering in Co₃O₄/CoMoO₄ Heterostructures toward Active Oxidation of Ethylbenzene

Progress in Catalytic Pyrolysis of Oil Shale

Performance study of Ni, Co, and Mo catalysts supported on γ ‐Al ₂ O ₃ and HZSM5 in HDS reactions of mixed naphtha

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Gentle hydrotreatment of shale oil in fixed bed over Ni-Mo/Al2O3 for upgrading

Cited by 15 publications

References 40 publications

Coupled Interface and Oxygen-Defect Engineering in Co3O4/CoMoO4 Heterostructures toward Active Oxidation of Ethylbenzene

Coupled Interface and Oxygen-Defect Engineering in Co3O4/CoMoO4 Heterostructures toward Active Oxidation of Ethylbenzene

Progress in Catalytic Pyrolysis of Oil Shale

Performance study of Ni, Co, and Mo catalysts supported on γ ‐Al 2 O 3 and HZSM5 in HDS reactions of mixed naphtha

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Product

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Coupled Interface and Oxygen-Defect Engineering in Co₃O₄/CoMoO₄ Heterostructures toward Active Oxidation of Ethylbenzene

Coupled Interface and Oxygen-Defect Engineering in Co₃O₄/CoMoO₄ Heterostructures toward Active Oxidation of Ethylbenzene

Performance study of Ni, Co, and Mo catalysts supported on γ ‐Al ₂ O ₃ and HZSM5 in HDS reactions of mixed naphtha