Calculation of MoS 2 slabs morphology descriptors from transmission electron microscopy data revisited. Case study of the influence of citric acid and treatment conditions on the properties of MoS 2 /Al 2 O 3

Afanasiev, P.

doi:10.1016/j.apcata.2016.10.008

Cited by 14 publications

(10 citation statements)

References 44 publications

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“…We further confirm this finding with the catalytic performance of the monometallic Mo/Al 2 O 3 catalyst (Table S3). Reaction results showed that neither the HDS rate nor the HYD selectivity was promoted with addition of citric acid, which is consistent with ref . This means that the complexation between Mo and CA is insignificant; thus, the promotion effect should be related to the interaction between CA and the Ni promoter and eventually with the active NiMoS phase.…”

Section: Resultssupporting

confidence: 86%

Study of the Promotion Effect of Citric Acid on the Active NiMoS Phase in NiMo/Al₂O₃ Catalysts

Zhang

Liu

et al. 2019

Ind. Eng. Chem. Res.

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A series of NiMo/Al2O3 catalysts were prepared using an aqueous solution containing Ni and Mo salts and citric acid (CA). Hydrodesulfurization (HDS) of dibenzothiophene (DBT) and hydrogenation (HYD) of biphenyl showed that both HDS and HYD activities of NiMo/Al2O3 catalysts were enhanced with addition of CA. The promotion effect of CA can be attributed to a morphology control of the MoS2 phase and an increase of the NiMoS phase. Transmission electron microscopy analysis indicates that CA has a minor effect on MoS2 dispersion but increases its mean stacking degree, with 3-layer dominating. X-ray photoelectron spectroscopy analysis confirmed the increase of the NiMoS phase. A preferential complexation between Ni and CA was supported by the fact that the catalyst prepared by reacting Ni with CA before Mo in the impregnation solution had the best catalytic activity and CA has no promotion effect within the monometallic Mo/Al2O3 catalyst.

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Section: Resultssupporting

confidence: 86%

Study of the Promotion Effect of Citric Acid on the Active NiMoS Phase in NiMo/Al₂O₃ Catalysts

Zhang

Liu

et al. 2019

Ind. Eng. Chem. Res.

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“…Thiophene HDS steady-state specific rates are shown in Fig. 4a and Table 2 in comparison with benchmark alumina-supported reference [68]. For atomically dispersed species, the values of TOF and specific rate per TM atom are equivalent.…”

Section: Thiophene Hdsmentioning

confidence: 99%

Ultradispersed (Co)Mo catalysts with high hydrodesulfurization activity

Ryaboshapka

Piccolo

Aouine

et al. 2022

Applied Catalysis B: Environmental

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“…25 The supported few-layer MoS 2 catalysts for catalytic HY, HDS, HDN, and HDM of oils were usually utilized in fixed-bed reactor and synthesized by gas-sold method. These catalysts were obtained by impregnating molybdenates over supporter and generating molybdenum oxide precursors by calcining at high temperature and then sulfured with sulfides such as mixed H 2 S/H 2 gases, 26,27 CS 2 , 28 and organic sulfides. 29 The synthesis of supported MoS 2 catalysts by gas−solid method often requires multistep process and high temperature.…”

Section: Introductionmentioning

confidence: 99%

Quasi-Single-Layer MoS₂ on MoS₂/TiO₂ Nanoparticles for Anthracene Hydrogenation

Wang

Zheng

et al. 2019

ACS Appl. Nano Mater.

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Developing highly dispersed few stacking layer MoS2 nanocatalysts with high exposure of active sites is still a challenge in improving their catalytic activities. Herein, we report a facile strategy for fabricating quasi-single-layer (<3 layers) MoS2/TiO2 nanocatalysts by a novel one-step hydrothermal method using ammonium tetrathiomolybdate (ATM) and P25 (TiO2) as Mo precursor and highly dispersed supporter, respectively. MoS2 nanosheets on MoS2/TiO2 nanocatalysts with the quasi-single layer and slab of less than 10 nm expose maximum active sites of the catalytic anthracene hydrogenation. The results of the catalytic anthracene hydrogenation in slurry-bed reactor show that the quasi-single-layer MoS2/TiO2 nanocatalyst exhibits optimized catalytic hydrogenation performance with the selectivity to deep hydrogenation product (AH8) of 51% and hydrogenation percentage of 41.4%, which were respectively about 5.7 times and twice those of unsupported MoS2 catalyst. The outstanding catalytic activity of anathracene hydrogenation over the resultant quasi-single-layer MoS2/TiO2 can be ascribed to the superior structures of MoS2/TiO2 nanocatalysts. The uniform loading of quasi-single-layer MoS2 nanosheets onto the TiO2 can remarkably enhance the exposure of active sites and effectively avoid the self-aggregation of MoS2 nanosheets.

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Calculation of MoS 2 slabs morphology descriptors from transmission electron microscopy data revisited. Case study of the influence of citric acid and treatment conditions on the properties of MoS 2 /Al 2 O 3

Cited by 14 publications

References 44 publications

Study of the Promotion Effect of Citric Acid on the Active NiMoS Phase in NiMo/Al₂O₃ Catalysts

Study of the Promotion Effect of Citric Acid on the Active NiMoS Phase in NiMo/Al₂O₃ Catalysts

Ultradispersed (Co)Mo catalysts with high hydrodesulfurization activity

Quasi-Single-Layer MoS₂ on MoS₂/TiO₂ Nanoparticles for Anthracene Hydrogenation

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Calculation of MoS 2 slabs morphology descriptors from transmission electron microscopy data revisited. Case study of the influence of citric acid and treatment conditions on the properties of MoS 2 /Al 2 O 3

Cited by 14 publications

References 44 publications

Study of the Promotion Effect of Citric Acid on the Active NiMoS Phase in NiMo/Al2O3 Catalysts

Study of the Promotion Effect of Citric Acid on the Active NiMoS Phase in NiMo/Al2O3 Catalysts

Ultradispersed (Co)Mo catalysts with high hydrodesulfurization activity

Quasi-Single-Layer MoS2 on MoS2/TiO2 Nanoparticles for Anthracene Hydrogenation

Contact Info

Product

Resources

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Study of the Promotion Effect of Citric Acid on the Active NiMoS Phase in NiMo/Al₂O₃ Catalysts

Study of the Promotion Effect of Citric Acid on the Active NiMoS Phase in NiMo/Al₂O₃ Catalysts

Quasi-Single-Layer MoS₂ on MoS₂/TiO₂ Nanoparticles for Anthracene Hydrogenation