Preparation and characterization of Ni–Co/SiO2 nanocomposite catalysts for CO2 methanation

Dyachenko, A. G.; Ищенко, Е. В.; Goncharuk, Olena; Borysenko, M.V.; Mischanchuk, Oleksandr V.; Гунько, В.М.; Sternik, Dariusz

doi:10.1007/s13204-020-01650-1

Cited by 11 publications

(2 citation statements)

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“… Metal precursors CO 2 conversion (%) T (K) Metal content Preparation Method Literature (Ref. number) Co, Ni, Al 18-62-72 523-573-623 2Co–8Ni Evaporation induced self-assemble [ 11 ] Ni, Co, Al 60-80-84 15Co Incipient impregnation [ 12 ] 10-25-45 15Ni 70-82-84 25Co 18-40-68 25Ni Ni, Co, Mg, Al 1-27-61 15Ni Co-precipitation [ 9 ] 9-74-83 15Ni-0,5Co 24-77-89 15Ni–1Co 17-82-81 15Ni–2Co Ni, Co, Al 0-0-88 13Ni Incipient impregnation [ 13 ] 0-0-0 13Ni–4Co Ni, Co, Si 4-36-85 10Ni Solvate-stimulated modification [ 14 ] 42-81-95 10Co 11-42-91 5Ni–5Co 23-89-100 2Ni–8Co Ni, Co, Al 12-48-72 15Ni-12,5Co …”

Section: Introductionmentioning

confidence: 99%

“…Other authors studied, the different bimetallic contents: like 2Ni–8Co/SiO 2 and 5Ni–5Co/SiO 2 nanocomposite catalysts which exhibited high activity in the Sabatier process with a CH 4 yield of an 81–88% at 723 K. This activity enhanced was due to the Ni–Co nanoparticles acting cooperatively accumulated into the nanosilica matrix and the formation of O-intermediates bound to the bimetallic catalyst [ 14 ]. Finally, the effect of adding different promoters (Fe, Mn, Cu, …) to a bimetallic 15Ni-12.5Co/Al 2 O 3 catalyst enhanced the activity due to the increase in Ni dispersion and higher crystallinity by a certain Fe content [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

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UV- and visible-light photocatalysis using Ni–Co bimetallic and monometallic hydrotalcite-like materials for enhanced CO2 methanation in sabatier reaction

Canales

Gil-Calvo

Barrio

2023

Heliyon

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

UV- and visible-light photocatalysis using Ni–Co bimetallic and monometallic hydrotalcite-like materials for enhanced CO2 methanation in sabatier reaction

Canales

Gil-Calvo

Barrio

2023

Heliyon

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CO2 Hydrogenation Over Bulk and Loaded NiFe Catalysts: The Effect of Carrier

Dyachenko,

Ischenko,

Diyuk

et al. 2023

Springer Proceedings in Physics

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Co–Fe–oxide nanoparticles supported on the various highly dispersed matrices: the effect of the carrier on structural and magnetic properties

Dyachenko,

Terpilowski,

Ischenko

et al. 2023

Adsorption

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AbstractsA series of mixed oxides was synthesized by deposition of the guest phase on the highly dispersed oxide matrix. Fumed nanooxides SiO2, Al2O3, SiO2/Al2O3, and SiO2/Al2O3/TiO2 with the specific surface area of 65–91 m2/g were selected as highly dispersed matrices. Co–Fe mixed oxides with the general formula Co4xFexOy (Co: Fe = 4: 1) were deposited as the guest oxides using the two-step method: (i) solvate-stimulated modification of the surface of fumed nanocarriers with the mixture of cobalt nitrate (II) and iron (III) formate and (ii) subsequent heat treatment up to 600 °C to form Co4xFexOy. The aim of this paper was to study the influence of the composition and structure of fumed oxide matrices and deposited guest phase on the morphology of the resulting composites in the gaseous and aqueous media using the XRD, XPS, FTIR, nitrogen adsorption and SEM/EDX, as well as quasi-elastic light scattering (QELS) methods. The low-temperature nitrogen adsorption isotherms have a sigmoidal shape with a narrow hysteresis loop characteristic of mesoporous materials. The specific surface area (SBET) of the composites varies from 48 to 82 m2/g, showing a tendency towards a decrease in the SBET values by 10–26% in comparison with the initial nanocarriers. The SEM data show the denser aggregate structure of nanocomposites compared to the initial carriers. The primary particle size was in the 30–60 nm range and the EDX data confirm the formation of a guest phase on the mixed aluminosilicate carriers, mainly in the surface patches corresponding to the alumina structure. According to the QELS data, there is a tendency to form aggregates of 100–10 μm in size in the aqueous media. The XRD method shows that the deposited metal oxides are in the form of crystalline phases of Co3O4 with the crystallites of 25–26 nm in size for the individual SiO2 and Al2O3 nanocarriers and 34–37 for the mixed ones, but the iron oxide reflections were not identified for the composites. XPS observation demonstrates the signal of Fe 2p electrons as the form of Fe2O3 oxide in the surface layer of nanocomposites as well as Co 2p as the Co3O4 and Co(OH)2.

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Preparation and characterization of Ni–Co/SiO2 nanocomposite catalysts for CO2 methanation

Cited by 11 publications

References 50 publications

UV- and visible-light photocatalysis using Ni–Co bimetallic and monometallic hydrotalcite-like materials for enhanced CO2 methanation in sabatier reaction

UV- and visible-light photocatalysis using Ni–Co bimetallic and monometallic hydrotalcite-like materials for enhanced CO2 methanation in sabatier reaction

CO2 Hydrogenation Over Bulk and Loaded NiFe Catalysts: The Effect of Carrier

Co–Fe–oxide nanoparticles supported on the various highly dispersed matrices: the effect of the carrier on structural and magnetic properties

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