Relationship between active phase morphology and catalytic properties of the carbon–alumina-supported Co(Ni)Mo catalysts in HDS and HYD reactions

Nikulshin, P.A.; Сальников, В. А.; Можаев, А. В.; Minaev, P. P.; Коган, В. М.; Пимерзин, А. А.

doi:10.1016/j.jcat.2013.10.020

Cited by 152 publications

(67 citation statements)

References 62 publications

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“…The samples were rst outgassed under 823 K for 1 h before the measurement. Aer cooling to 373 K, the samples were saturated in an NH 3 …”

Section: Catalyst Characterizationmentioning

confidence: 99%

“…Generally, TMS catalysts need to be supported on a carrier like alumina and the support plays a vital role in determining the catalytic activity and stability. [1][2][3] It is generally accepted that a support with strong Brönsted acid sites is benecial for promoting the HDS performance of catalysts [4][5][6][7][8][9] because it could enhance the adsorption properties of sulfur-containing molecules 8 and optimize the electronic properties of active phases. 9 Thus, zeolites with such acid sites have been widely investigated as support of HDS catalysts.…”

Section: Introductionmentioning

confidence: 99%

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Restraining deactivation of hierarchical zeolite supported NiW catalysts in the HDS of thiophene

et al. 2015

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NiW catalysts supported on g-Al 2 O 3 (NiW/Al 2 O 3 ), commercial Beta (NiW/HB) and hierarchical Beta prepared by base-acid treatment (NiW/HB-M) were characterized by X-ray diffraction (XRD), N 2 sorption, infrared spectroscopy (IR), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS).The catalytic performance of these catalysts was evaluated in the hydrodesulfurization (HDS) of

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“…The samples were rst outgassed under 823 K for 1 h before the measurement. Aer cooling to 373 K, the samples were saturated in an NH 3 …”

Section: Catalyst Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Restraining deactivation of hierarchical zeolite supported NiW catalysts in the HDS of thiophene

et al. 2015

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“…Hydroprocessing of vegetable oils leads to the production of hydrocarbons in the boiling range of diesel, commonly called green diesel or renewable diesel (Nikulshin et al, 2014). Depending on the reaction conditions (i.e.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the choice of catalyst is crucial for the composition and desired fuel properties of hydroprocessed triglycerides. Moreover, the nature of the support plays an essential role on the morphology of active phase particles (Nikulshin et al, 2014), which in turn is strongly related with the catalytic activity and stability. Supports (i.e.…”

Section: Introductionmentioning

confidence: 99%

“…However, alumina develops strong interactions with metal oxide precursors which could favor the formation of undesired phases under certain reaction conditions. In addition, its surface contains acid and basic sites that cause undesirable transformations of precursors and coke formation (Nikulshin et al, 2014). On the other hand, a carbonaceous support such as activated carbon has been reported to have some potential for enhancing the dispersion of the catalytic metalsulphide because of the weak polarity and higher surface area.…”

Section: Introductionmentioning

confidence: 99%

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NiMo-sulfide supported on activated carbon to produce renewable diesel

Tapia¹,

Acelas²,

López³

et al. 2017

Univ. Sci.

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Citation: Tapia J, Acelas NY, López DP, Moreno A. NiMo-sulfide supported on activated carbon to produce renewable diesel, Universitas Scientiarum, 22 (1): 71-85, 2017. doi: 10.11144/Javeriana.SC22-1.nsoa Funding:The authors are grateful to Empresas Públicas de Medellín (EPM) for financing the project, "Programa de Producción de Bio-Hidrocarburos Líquidos para la Generación de Energía Eléctrica" (401466), and to the University of Antioquia for the financial support of the "Programa Sostenibilidad". AbstractDue to their weak polarity and large surface area, activated carbon supports have the potential to enhance the dispersion of metal-sulfides. It is expected that the absence of a strong metal-support interaction can result in the formation of a very active and stable Ni-Mo-S phase. In this study, catalysts with different amounts of nickel and molybdenum supported on a commercial activated carbon were prepared by a co-impregnation method and characterized by BET, XRF, and SEM techniques. The catalytic activity for hydroprocessing of Jatropha oil was evaluated in a batch reactor, and the composition of the liquid and gaseous products were determined. Results showed that gaseous products are mainly composed of high amounts of propane and small amounts of other light hydrocarbons (C1 to C5). Liquid hydrocarbon products consisted of a mixture containing mainly n-paraffins of C15-C18 and some oxygenated compounds. The catalysts with a mass fraction of 3 % Ni, 15 % Mo (Ni3Mo15/AC) presented the highest selectivity toward C17-C18 hydrocarbons, with a product distribution similar to a commercial alumina-supported Ni-Mo-S catalyst.

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Modulating the active phase structure of NiMo/Al₂O₃ by La modification for ultra‐deep hydrodesulfurization of diesel

Yan

Liu

et al. 2022

AIChE Journal

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Herein, a series of mesoporous NiMo/LaAlO x with various La contents were constructed through a solvent evaporation-induced self-assembly protocol, and their catalytic activities were investigated for hydrodesulfurization (HDS) of 4,6-DMDBT.It has been confirmed that the incorporation of La influences the electronic structure and morphology of NiMoS active phase. The lower amount of La (x ≤ 1.0 wt.%) could facilitate the formation of "Type II" NiMoS phase by weakening the interaction of Mo-O-Al leakage and promoting the sulfidation of both Mo and Ni species as well as increasing the ratio of "Type II" NiMoS phase, thereafter boosting the HDS performances. Further increasing La incorporation, however, leads to the generation of inactive NiS x phase and decrease of NiMoS active phase proportion, the HDS activities of corresponding catalysts were suppressed. NiMo/LaAlO x -1.0 exhibits the highest activity for 4,6-DMDBT HDS because of its moderate metal-support interaction, optimal morphology and the largest proportion of "Type II" NiMoS active phase.

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Relationship between active phase morphology and catalytic properties of the carbon–alumina-supported Co(Ni)Mo catalysts in HDS and HYD reactions

Cited by 152 publications

References 62 publications

Restraining deactivation of hierarchical zeolite supported NiW catalysts in the HDS of thiophene

Restraining deactivation of hierarchical zeolite supported NiW catalysts in the HDS of thiophene

NiMo-sulfide supported on activated carbon to produce renewable diesel

Modulating the active phase structure of NiMo/Al₂O₃ by La modification for ultra‐deep hydrodesulfurization of diesel

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Relationship between active phase morphology and catalytic properties of the carbon–alumina-supported Co(Ni)Mo catalysts in HDS and HYD reactions

Cited by 152 publications

References 62 publications

Restraining deactivation of hierarchical zeolite supported NiW catalysts in the HDS of thiophene

Restraining deactivation of hierarchical zeolite supported NiW catalysts in the HDS of thiophene

NiMo-sulfide supported on activated carbon to produce renewable diesel

Modulating the active phase structure of NiMo/Al2O3 by La modification for ultra‐deep hydrodesulfurization of diesel

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Modulating the active phase structure of NiMo/Al₂O₃ by La modification for ultra‐deep hydrodesulfurization of diesel