Guaiacol hydrodeoxygenation reaction catalyzed by highly dispersed, single layered MoS<sub>2</sub>/C

Mukundan, Swathi; Konarova, Muxina; Atanda, Luqman; Ma, Qiang; Beltramini, Jorge

doi:10.1039/c5cy00607d

Cited by 73 publications

(64 citation statements)

References 74 publications

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“…15 Among the widely used carbon support is activated carbon, nonetheless, its characteristic micropores can be easily blocked when using large reactant molecules which oen leads to catalyst deactivation as was observed in our previous study of guaiacol conversion using MoS 2 /C catalysts. 16 In this context, the inuence of surface porosity of carbon support on the activity of the catalyst for HDO reaction has yet to be explored. Mesoporous carbon is proven to be superior catalytic support because of its organised and controllable pore geometry that enables excellent distribution of active species, thus enhancing catalytic activity and stability.…”

Section: Introductionmentioning

confidence: 99%

Highly active and robust Ni–MoS₂supported on mesoporous carbon: a nanocatalyst for hydrodeoxygenation reactions

et al. 2019

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Section: Introductionmentioning

confidence: 99%

Highly active and robust Ni–MoS₂supported on mesoporous carbon: a nanocatalyst for hydrodeoxygenation reactions

et al. 2019

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“…The surface of the MoS 2 sample prepared by using L-cysteine comprised short crystallites with poor crystallinity and the sample showed low catalytic activity, resulting in many by-products and low selectivity at low temperatures. 21 At reaction temperatures of 260 C and 280 C, the selectivity for benzene was higher than that for cyclohexene, indicating that the catalytic reaction followed route 1 at high temperature, and the rate of hydrogenation of the phenyl ring was lower than that of hydrogenation of cyclohexene. Benzene and cyclohexene were produced in trace quantities at 300 C, 25 thus, a higher temperature was favorable for hydrogenation of the benzene ring.…”

Section: Hydrodeoxygenation Performancementioning

confidence: 99%

“…20 Hydrodeoxygenation (HDO) is the most common route for upgrading bio-oil, and MoS 2 catalysts have shown excellent performance in the HDO reaction. 21 To assess the catalyst properties, two di®erent morphologies of MoS 2 are used here in the HDO reaction of phenol as a model HDO reactant to comparing catalyst properties, and a mechanism for the HDO is proposed.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Porous MoS₂ with Controllable Morphology and Specific Surface Area for Hydrodeoxygenation

Zhang

Yue

2017

NANO

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SiO 2 nanoparticles modi¯ed with aminopropyl-triethoxysilane (APTES) were used as hard templates for preparing porous MoS 2 . The method o®ers the advantages of simple steps, convenient operation, controllable pore size, and a speci¯c surface area. Two morphologies of MoS 2 were obtained by using thiourea and L-cysteine as sulfur sources, respectively. Porous MoS 2 prepared by using thiourea had a smooth surface, whereas the surface of porous MoS 2 prepared with L-cysteine had many burrs. The MoS 2 nanomaterials with the respective morphologies were used to catalyze the hydrodeoxygenation (HDO) reaction. The activity of MoS 2 prepared with L-cysteine was lower than that prepared with thiourea. Transmission electron microscopy and X-ray di®raction analyses showed that MoS 2 had a large sheet-shaped structure and high crystallinity, leading to high reaction activity and high selectivity for cyclohexane. The reaction temperature also in°u-enced the HDO signi¯cantly. The mechanism of hydrogenation of phenol was discussed.

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“…and carbon nanofibers [19][20][21][22][23]. Transition metals have exhibited high catalytic active for the reforming process [19,[24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Deoxygenation in anisole decomposition over bimetallic catalysts supported on HZSM-5

Zhang

Fidalgo

Wagland

et al. 2019

Fuel

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This work investigated the deoxygenation reaction in anisole decomposition over HZSM-5 (HZ(25)) zeolite supported bimetallic catalysts to produce benzene, toluene and xylene (BTX). Experiments were performed in order to evaluate the synergistic effect between the two active metals with the focus on the effect of temperature, metal type, and metal loading ratio. Experimental results showed that 1%Ni-1%Mo/HZ(25) led to both the highest BTX yield (i.e. 30.0 wt.%) and selectivity (i.e. 83.7%). On the contrary, bimetallic catalysts containing Fe were less effective in promoting the BTX production. It was identified that the optimum temperature for BTX production over 1%Ni-1%Mo/HZ(25) catalysts was 500°C. Characterization of fresh and spent catalysts showed microcrystal particles of bi-metal loadings highly dispersed on the zeolite surface, and some agglomeration of metallic particles were also observed. Large amount of carbonaceous deposit was observed on the spent catalysts mainly in the form of amorphous. Density Functional Theory (DFT) modelling was carried out in order to study the adsorption energy of anisole and phenol molecules onto Ni-Mo, Ni-Fe and Mo-Fe surfaces; and the interactions between phenol molecule and bimetal surfaces were further analysed. All the analysed bimetal surfaces exhibited strong interactions with the adsorbed molecule. Ni-Mo surface declined electrons energy levels mainly around 1.5 eV in the adsorbate molecule and released the highest adsorption energy; while Ni-Fe and Mo-Fe surface led to more electrons exchange with the adsorbate during the adsorption. The modelling results agreed well with experiments by revealing that the strong binding between phenolic compounds (Phs) and the Ni-Mo based catalysts bimetal surface would lead to a higher BTX production in the deoxygenation reaction in the decomposition of anisole.

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Guaiacol hydrodeoxygenation reaction catalyzed by highly dispersed, single layered MoS₂/C

Abstract: Single layered MoS2 supported on activated carbon prepared by a microemulsion technique with good catalyst stability even after 4 uses.

Cited by 73 publications

References 74 publications

Highly active and robust Ni–MoS₂supported on mesoporous carbon: a nanocatalyst for hydrodeoxygenation reactions

Highly active and robust Ni–MoS₂supported on mesoporous carbon: a nanocatalyst for hydrodeoxygenation reactions

Fabrication of Porous MoS₂ with Controllable Morphology and Specific Surface Area for Hydrodeoxygenation

Deoxygenation in anisole decomposition over bimetallic catalysts supported on HZSM-5

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Guaiacol hydrodeoxygenation reaction catalyzed by highly dispersed, single layered MoS2/C

Abstract: Single layered MoS2 supported on activated carbon prepared by a microemulsion technique with good catalyst stability even after 4 uses.

Cited by 73 publications

References 74 publications

Highly active and robust Ni–MoS2supported on mesoporous carbon: a nanocatalyst for hydrodeoxygenation reactions

Highly active and robust Ni–MoS2supported on mesoporous carbon: a nanocatalyst for hydrodeoxygenation reactions

Fabrication of Porous MoS2 with Controllable Morphology and Specific Surface Area for Hydrodeoxygenation

Deoxygenation in anisole decomposition over bimetallic catalysts supported on HZSM-5

Contact Info

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Resources

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Guaiacol hydrodeoxygenation reaction catalyzed by highly dispersed, single layered MoS₂/C

Highly active and robust Ni–MoS₂supported on mesoporous carbon: a nanocatalyst for hydrodeoxygenation reactions

Highly active and robust Ni–MoS₂supported on mesoporous carbon: a nanocatalyst for hydrodeoxygenation reactions

Fabrication of Porous MoS₂ with Controllable Morphology and Specific Surface Area for Hydrodeoxygenation