One pot synthesis of NiMo–Al<sub>2</sub>O<sub>3</sub> catalysts by solvent-free solid-state method for hydrodesulfurization

Yi, Xiaodong; Guo, Dongyun; Peng-yun, LI; Lian, Xinyi; Xu, Yingrui; Dong, Yuanyuan; Lai, Weikun; Fang, Weiping

doi:10.1039/c7ra11892a

Cited by 18 publications

(5 citation statements)

References 30 publications

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“…Owing to the low concentration, well dispersion, and small size of cobalt and nickel particles, the weakly associated peaks were obtained. Such behavior was also reported in the previous studies dedicated to NiMo [78][79][80][81] and CoMo [82,83] catalysts. The wt.%, as well as well particle distribution, were obtained by EDXS and mapping analysis (Table 1 and Figures S1-S4).…”

Section: Catalyst Characterizationssupporting

confidence: 87%

Converting Cyclohexanone to Liquid Fuel-Grade Products: A Characterization and Comparison Study of Hydrotreating Molybdenum Catalysts

et al. 2021

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Developing biomass-based strategies for liquid bio-fuels production is promising for the reduction of the aftereffects of fossil fuels. The conversion of lignin-derived intermediates such as cyclohexanone is currently of a great deal of interest. The current study aims to evaluate the molybdenum-based hydrotreating catalysts for the conversion of cyclohexanone in the presence of hydrogen. Catalytic experiments at 400 °C, 15 bar, and a range of WHSV were developed. The experiments reveal that catalyst type and reaction WHSV affect the cyclohexanone conversion, product distribution, deoxygenation efficiency, total hydrocarbon production capacity, and heating value of the product blend. The main products include C 6 cyclic and aromatic hydrocarbons and oxygenates. Cyclohexane, cyclohexene, benzene, cyclohexanol, and phenol are major products. Small quantities of methylcyclopentane and bicyclic hydrocarbons and oxygenates are also reported in some cases. Increasing WHSV reduced the cyclohexanone conversion. Cyclohexanone conversions up to 89% were observed at the lowest WHSVs over a cobalt-molybdenum sample. The highest hydrocarbon production capacity (99.53%) was managed at WHSV = 5.240 g cyclohexanone /g cat h over a cobalt-molybdenum sample, while the highest deoxygenation efficiency, i.e. 81.29% degree of deoxygenation and 5.35 C/O ratio enhancement were achieved at WHSV = 0.262 g cyclohexanone /g cat h by a nickel-molybdenum sample. The heating values would be enhanced by up to 22.7% when cyclohexanone is converted over the utilized catalysts. The larger heating value (44.90 MJ/kg, 22.7% enhancement) was obtained over a nickel-molybdenum catalyst, which is comparable to the energy density of the conventional fuels. The results reveal that the catalysts are efficient in the conversion of cyclohexanone to liquid bio-fuels.

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Section: Catalyst Characterizationssupporting

confidence: 87%

Converting Cyclohexanone to Liquid Fuel-Grade Products: A Characterization and Comparison Study of Hydrotreating Molybdenum Catalysts

et al. 2021

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“…As shown in Figure 4, the reducibility of nickel‐molybdenum bimetallic nitrides catalysts is evaluated. The peak between 200–450 °C could be assigned to the reduction of surface oxides [23] …”

Section: Resultsmentioning

confidence: 99%

“…The peak between 200-450 °C could be assigned to the reduction of surface oxides. [23] The Mo 2 N sample has a higher-temperature H 2 -consuming peak at 436.…”

Section: The Physicochemical Properties Of Nickel Molybdenum Bimetall...mentioning

confidence: 99%

Nickel Molybdenum Bimetallic Nitrides as Efficient Catalysts for the Hydrodeoxygenation of Methyl Palmitate

et al. 2023

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Highly efficient catalysts play an important role in the effective use of biomass oil to produce clean fuel. In this work, pure‐phase Ni−Mo bimetallic nitrides (Ni2Mo3N and Ni3Mo3N) with different stoichiometric ratios are prepared by temperature‐programmed nitridation of the metal oxide precursors in ammonia, which are investigated in the hydrodeoxygenation of methyl palmitate in the fixed‐bed reactor at moderate conditions. The physical and chemical properties of catalysts were evaluated by H2‐TPR, XRD, SEM, TEM, XPS, and CO chemisorption. The Ni2Mo3N catalyst presents the best methyl palmitate hydrogenation activity (con.%=95.4 %) and the maximum hexadecane selectivity (95.0 %), which is obviously higher than those of Ni3Mo3N and Mo2N catalysts. By introducing transition metal Ni into the Mo2N lattice to form nickel‐molybdenum bimetallic nitride, the lattice structure and electronic structure of the Mo active center have been changed, which greatly enhances the hydrodeoxygenation performances for the transformation of biomass oil to clean fuel.

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“…Carbonaceous residua could also act as spacer hindering sulfided phases sintering thus improving their dispersion. In this line, Yi et al reported [68] preparation of NiMo-based catalaysts in presence of polyethylene glycol (PEG) by using their solvent-free solid-state method. Based in their results that group claimed that when in suitable amount PEG addition rendered materials of improved sulfidability and active MoS 2 dispersion the latter effect being caused by carbonaceous residua blocking Ni and Mo phases aggregation avoiding then formation of large clusters.…”

Section: Sulfided Catalysts Characterization Of By High-resolution Electron Microscopy (Hr-tem)mentioning

confidence: 99%

Highly active P-doped sulfided NiMo/alumina HDS catalysts from Mo-blue by using saccharose as reducing agents precursor

Escobar

Barrera

Gutierrez

et al. 2018

Applied Catalysis B: Environmental

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One pot synthesis of NiMo–Al₂O₃ catalysts by solvent-free solid-state method for hydrodesulfurization

Abstract: A simple and solvent-free solid-state method was used to prepare NiMo–Al2O3 hydrodesulfurization (HDS) catalysts using Ni(NO3)2·6H2O, (NH4)6Mo7O24·4H2O, and AlCl3·6H2O as the solid raw materials and polyethylene glycol (PEG) as an additive.

Cited by 18 publications

References 30 publications

Converting Cyclohexanone to Liquid Fuel-Grade Products: A Characterization and Comparison Study of Hydrotreating Molybdenum Catalysts

Converting Cyclohexanone to Liquid Fuel-Grade Products: A Characterization and Comparison Study of Hydrotreating Molybdenum Catalysts

Nickel Molybdenum Bimetallic Nitrides as Efficient Catalysts for the Hydrodeoxygenation of Methyl Palmitate

Highly active P-doped sulfided NiMo/alumina HDS catalysts from Mo-blue by using saccharose as reducing agents precursor

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One pot synthesis of NiMo–Al2O3 catalysts by solvent-free solid-state method for hydrodesulfurization

Abstract: A simple and solvent-free solid-state method was used to prepare NiMo–Al2O3 hydrodesulfurization (HDS) catalysts using Ni(NO3)2·6H2O, (NH4)6Mo7O24·4H2O, and AlCl3·6H2O as the solid raw materials and polyethylene glycol (PEG) as an additive.

Cited by 18 publications

References 30 publications

Converting Cyclohexanone to Liquid Fuel-Grade Products: A Characterization and Comparison Study of Hydrotreating Molybdenum Catalysts

Converting Cyclohexanone to Liquid Fuel-Grade Products: A Characterization and Comparison Study of Hydrotreating Molybdenum Catalysts

Nickel Molybdenum Bimetallic Nitrides as Efficient Catalysts for the Hydrodeoxygenation of Methyl Palmitate

Highly active P-doped sulfided NiMo/alumina HDS catalysts from Mo-blue by using saccharose as reducing agents precursor

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One pot synthesis of NiMo–Al₂O₃ catalysts by solvent-free solid-state method for hydrodesulfurization