Effect of Composition of Cobalt-Molybdenum-Containing Sulfonium Thiosalts on the Hydrogenation Activity of Nanosized Catalysts In Situ Synthesized on Their Basis

Knyazeva, M. I.; Panyukova, D. I.; Kuchinskaya, T. S.; Куликов, А. Б.; Maximov, A. L.

doi:10.1134/s0965544119120065

Cited by 7 publications

(5 citation statements)

References 32 publications

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“…As shown previously, catalysts based on Ni-Mo sulfides are active both in hydrogenation of aromatic compounds [24][25][26][27] and in the water-gas shift reaction. Such systems are resistant to СО, which allows the hydrogenation to be performed in the СО-water system using hydrogen formed in situ by the reaction of CO with H 2 O.…”

Section: Doi: 101134/s0965544121100078supporting

confidence: 61%

Biphenyl Hydrogenation with Syngas for Hydrogen Purification and Transportation: Performance of Dispersed Catalytic Systems Based on Transition Metal Sulfides

et al. 2021

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The feasibility of biphenyl hydrogenation with syngas for hydrogen purification and binding with the aim of its transportation was demonstrated. Specific features of the hydrogenation of biphenyl as a promising organic hydrogen carrier using unsupported Ni–Mo sulfide catalysts were studied. In particular, the influence of temperature, reaction time, presence of water in the system, and Н2/СО gas mixture composition on the substrate conversion and selectivity with respect to products was examined. The highest conversion and the maximal hydrogen uptake are reached at 380°С in 6–8 h. The dispersed catalysts are active in biphenyl hydrogenation at the CO concentration in the Н2/СО gas mixture of up to 50 vol %, and H2O can act in this case as an in situ hydrogen source owing to the occurrence of the water-gas shift reaction.

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Section: Doi: 101134/s0965544121100078supporting

confidence: 61%

Biphenyl Hydrogenation with Syngas for Hydrogen Purification and Transportation: Performance of Dispersed Catalytic Systems Based on Transition Metal Sulfides

et al. 2021

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“…6 Among the electrocatalysts that can be widely applied, copper-based catalysts had the advantages of high conductivity and low price, 7 whereas sulfide catalysts had the advantages of high activity and stability. 8 Therefore, copper-based sulfides such as Cu 2 S had broad research prospects in the field of electrolytic water. 9,10 In recent years, defect engineering emerged as a promising strategy for enhancing the electrochemical performance of materials, with structural defects playing a crucial role in the electrocatalytic process.…”

Section: Introductionmentioning

confidence: 99%

“…Among the electrocatalysts that can be widely applied, copper‐based catalysts had the advantages of high conductivity and low price, 7 whereas sulfide catalysts had the advantages of high activity and stability 8 . Therefore, copper‐based sulfides such as Cu 2 S had broad research prospects in the field of electrolytic water 9,10 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Cu₂₋_xS electrocatalysts with different stoichiometric numbers by electrodeposition and heat posttreatment

Xiao,

Yin,

Chen

et al. 2024

J Am Ceram Soc.

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The work presented an electrochemical anode method with different electrolyte concentrations and heat posttreatment to control the stoichiometry and structure of Cu2−xS electrocatalysts. X‐ray diffraction, X‐ray photoelectron spectroscopy, and scanning electron microscopy were employed to characterize the composition and morphology, whereas the electrocatalytic activity was evaluated by linear scanning voltammetry and electrochemical impedance spectroscopy. The results showed that the electrochemical method successfully synthesized thin flake‐shaped Cu7S4, which exhibited optimal performance at the electrolyte concentration of 0.45 mol L1 with maximum turnover frequency of 0.786 s−1, maximum mass activity of 0.539 A g−1, minimum charge transfer resistance of 0.156 Ω cm−2, and minimum overpotential of 154 mV at a current density of 10 mA cm−2. In the Cu7S4 structure, Cu2+ and S2− were coordinated in a CuS4 tetrahedral structure, whereas Cu+ and S2− were coordinated in a CuS3 triangular structure. Heat posttreatment could change the stoichiometry from 1.75 to 1.8 and improve the electrochemical performance. In the Cu9S5 structure, the CuS3 triangular structure had disappeared. Under the same conditions, the overvoltage was only 128 mV.

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Section: Introductionmentioning

confidence: 99%

“…Unsupported sulfide catalysts on the basis of transition metals can be obtained using different methods: coacervation [32], codeposition [33], or precursor decomposition [34][35][36]. Precursors can include water-soluble [34,35] and oil-soluble [36] transition metal compounds. Despite the fact that the use of water-soluble compounds is more cost effective because of their low cost, they entail the formation of somewhat larger particles, which reduces the reactivity of the obtained catalyst [37].…”

Section: Introductionmentioning

confidence: 99%

In Situ Generated Nanosized Sulfide Ni-W Catalysts Based on Zeolite for the Hydrocracking of the Pyrolysis Fuel Oil into the BTX Fraction

et al. 2020

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The hydrocracking reaction of a pyrolysis fuel oil fraction using in situ generated nano-sized NiWS-sulfide catalysts is studied. The obtained catalysts were defined using X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). The features of catalytically active phase generation, as well as its structure and morphology were considered. The catalytic reactivity of in situ generated catalysts was evaluated using the hydrocracking reaction of pyrolysis fuel oil to obtain a light fraction to be used as a feedstock for benzene, toluene, and xylene (BTX) production. It was demonstrated that the temperature of 380 °C, pressure of 5 MPa, and catalyst-to-feedstock ratio of 4% provide for a target fraction (IPB −180 °C) yield of 44 wt %, and the BTX yield of reaching 15 wt %.

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Effect of Composition of Cobalt-Molybdenum-Containing Sulfonium Thiosalts on the Hydrogenation Activity of Nanosized Catalysts In Situ Synthesized on Their Basis

Cited by 7 publications

References 32 publications

Biphenyl Hydrogenation with Syngas for Hydrogen Purification and Transportation: Performance of Dispersed Catalytic Systems Based on Transition Metal Sulfides

Biphenyl Hydrogenation with Syngas for Hydrogen Purification and Transportation: Performance of Dispersed Catalytic Systems Based on Transition Metal Sulfides

Synthesis of Cu₂₋_xS electrocatalysts with different stoichiometric numbers by electrodeposition and heat posttreatment

In Situ Generated Nanosized Sulfide Ni-W Catalysts Based on Zeolite for the Hydrocracking of the Pyrolysis Fuel Oil into the BTX Fraction

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Effect of Composition of Cobalt-Molybdenum-Containing Sulfonium Thiosalts on the Hydrogenation Activity of Nanosized Catalysts In Situ Synthesized on Their Basis

Cited by 7 publications

References 32 publications

Biphenyl Hydrogenation with Syngas for Hydrogen Purification and Transportation: Performance of Dispersed Catalytic Systems Based on Transition Metal Sulfides

Biphenyl Hydrogenation with Syngas for Hydrogen Purification and Transportation: Performance of Dispersed Catalytic Systems Based on Transition Metal Sulfides

Synthesis of Cu2−xS electrocatalysts with different stoichiometric numbers by electrodeposition and heat posttreatment

In Situ Generated Nanosized Sulfide Ni-W Catalysts Based on Zeolite for the Hydrocracking of the Pyrolysis Fuel Oil into the BTX Fraction

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Synthesis of Cu₂₋_xS electrocatalysts with different stoichiometric numbers by electrodeposition and heat posttreatment