Constructing a superior Co–Mo HDS catalyst from a crystalline precursor separated from the impregnating solution

Liang, Jiaen; Wu, Mengmeng; Zhang, Zhihai; Wang, Hao; Huang, Ting‐Ting; Zhao, Lin; Liu, Yunqi; Liu, Chenguang

doi:10.1039/d2cy00083k

Cited by 10 publications

(1 citation statement)

References 66 publications

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“…Hydrodeoxygenation (HDO) is the most effective way to remove oxygen and some unsaturated content (Ambursa et al, 2021). Traditional catalysts for the HDO of biofuels are CoMo or NiMo sulfide, which have been widely used for industrial removal of sulfur, nitrogen, and oxygen from petroleum fuels (Zakzeski et al, 2010;Saidi et al, 2014;Li et al, 2011;Ruiz et al, 2012;Mortensena et al, 2011;Elliott, 2007;Liang et al, 2022). The disadvantage of the traditional catalysts includes sulfide contamination, coke formation, and deactivation caused by water.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Pd Nanoparticles Stabilized by Modified Montmorillonite for Efficient Hydrodeoxygenation of Lignin-Derived Phenolic Compounds in Water

Wang

Guo

et al. 2022

Front. Chem.

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Developing a new and efficient catalytic route for the production of alkanes by upgrading the aqueous phenolic biofuels still remains a challenge. Here, we designed and synthesized a bifunctional catalyst that uses natural montmorillonite (MMT) as support and combines metal active sites and Brӧnsted acid sites in the MMT via ion exchange and reduction roasting process. The catalytic activity of the as-synthesized Pd-MMT (H+) was evaluated by the hydrodeoxygenation (HDO) of a series of lignin-derived phenolic compounds in water. Our model reaction study reveals that the HDO of phenol undergoes an initial hydrogenation of aromatic rings to produce cyclohexanol and cyclohexanone, followed by the dehydration of cyclohexanol to provide intermediate cyclohexene and a final hydrogenation of cyclohexene to create a cyclohexane product. The combination of high metal catalytic activity and Brӧnsted acidity in Pd-MMT (H+) synergistically accelerated the HDO of phenol. Furthermore, good catalytic activity and recycling ability were also observed for other lignin-derived phenolic compounds.

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Section: Introductionmentioning

confidence: 99%

Preparation of Pd Nanoparticles Stabilized by Modified Montmorillonite for Efficient Hydrodeoxygenation of Lignin-Derived Phenolic Compounds in Water

Wang

Guo

et al. 2022

Front. Chem.

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Cationic Exchange of Evans‐Showell Polyoxometalate to Construct Efficient Hydrodesulfurization Catalyst

Liang

Wang

et al. 2023

ChemistrySelect

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In this paper, a simple cationic exchange method was proposed to increase the Co/Mo ratio in the Evans-Showell polyoxometalate to the desired 0.5 with both Mo and Co atoms in one molecule. This approach was proved successfully by X-ray diffraction, X-ray fluorescence spectrometer, infrared spectroscopy, and thermogravimetric analyzer. Then, the obtained Evans-Showell-type polyoxometalate was used as a superior precursor to construct efficient hydrodesulfurization catalyst, and the dibenzothiophene evaluation results showed that the hydrodesulfurization reaction turnover frequency, the rate constant, and the dibenzothiophene conversion are 1.8 × 10 À 3 s À 1 , 6.4 × 10 À 7 mol g À 1 s À 1 , and 95.2 %, respectively, illustrating the excellent hydrodesulfurization performance of the catalyst. The cationic exchange approach promises the Mo and Co atoms in one molecule and the desired proximity of them, leading to a higher dispersion of MoS 2 nanoparticles, a higher percent of CoMoS active phase and the excellent hydrodesulfurization performance for dibenzothiophene consequently.

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A Ni–Mo Polyoxometalate Based on Octamolybdate: Self-assemble and Application in Hydrotreating Catalyst

Liang

Zhu

et al. 2022

Catal Lett

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Constructing a superior Co–Mo HDS catalyst from a crystalline precursor separated from the impregnating solution

Abstract: In this paper, a Co tetra-capped Keggin crystalline Co4Mo12 was separated from the impregnating solution through the self-assembly strategy. The crystalline Co4Mo12 was structurally characterized and used as a molecular...

Cited by 10 publications

References 66 publications

Preparation of Pd Nanoparticles Stabilized by Modified Montmorillonite for Efficient Hydrodeoxygenation of Lignin-Derived Phenolic Compounds in Water

Preparation of Pd Nanoparticles Stabilized by Modified Montmorillonite for Efficient Hydrodeoxygenation of Lignin-Derived Phenolic Compounds in Water

Cationic Exchange of Evans‐Showell Polyoxometalate to Construct Efficient Hydrodesulfurization Catalyst

A Ni–Mo Polyoxometalate Based on Octamolybdate: Self-assemble and Application in Hydrotreating Catalyst

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