Bimetallic Co–Ni/TiO2 catalysts for selective hydrogenation of cinnamaldehyde

Ashokkumar, Saranya; Ganesan, V.; Ramaswamy, Krishnamurthy Konda; Viswanathan, B.

doi:10.1007/s11164-018-3517-7

Cited by 21 publications

(10 citation statements)

References 43 publications

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“…An increase in the content of cobalt in the composition of the bimetallic catalyst led to a shift in the reduction temperature of their active phases towards higher temperatures (441, 458 → 497 °C). This phenomenon was observed in other works [47,48].…”

Section: Characterization Of the Support And Supported Catalystssupporting

confidence: 86%

Catalytic Decomposition of Methane to Hydrogen over Al2O3 Supported Mono- and Bimetallic Catalysts

Ергазиева

Makayeva

Shaimerden

et al. 2021

Bull. Chem. React. Eng. Catal.

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This article discusses the decomposition of methane in the temperature range 550–800 °C on low-percentage monometallic (Ni/g-Al2O3, Co/g-Al2O3) and bimetallic (Ni-Co/g-Al2O3) catalysts. It is shown that the bimetallic catalyst is more active in the decomposition of methane to hydrogen than monometallic ones. At a reaction temperature of 600 °C, the highest methane conversion is 81%, and the highest hydrogen yield of 51% is formed on Ni-Co/g-Al2O3. A complex of physicochemical methods (Scanning Electron Microscope (SEM), X-ray Diffraction (XRD), Temperature Programmed Reduction (TPR-H2), etc.) established that the addition of cobalt oxide to the composition of Ni/g-Al2O3 leads to the formation of surface bimetallic Ni-Co alloys, while the dispersion of particles increases and the reducibility of the catalyst is facilitated, which provides an increase in the concentration of metal particles - active centers, which can be the reason for an increase in the catalytic properties of a bimetallic catalyst in comparison with monometallic ones. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

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Section: Characterization Of the Support And Supported Catalystssupporting

confidence: 86%

Catalytic Decomposition of Methane to Hydrogen over Al2O3 Supported Mono- and Bimetallic Catalysts

Ергазиева

Makayeva

Shaimerden

et al. 2021

Bull. Chem. React. Eng. Catal.

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“…Structural distortion in Ni–Co alloy increases with increase in nickel content due to maximum insertion of Ni into octahedral sites. 47–49 Ni–Co bimetallic sites in Ni x Co y -AC works synergistically with the monometallic active sites, and increase the hydrogenation ability. 47 The high selectivity towards cyclohexanol highlights the critical role of neighbouring Ni–Co bimetallic active sites for the adsorption of anisole and subsequent cleavage of C 6 H 11 O–CH 3 bond.…”

Section: Resultsmentioning

confidence: 99%

Anisole hydrodeoxygenation over Ni–Co bimetallic catalyst: a combination of experimental, kinetic and DFT study

et al. 2022

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“…From the results of GC-SM, biofuel compounds can be grouped into gasoline (C 5-12), kerosene (C13-14), and green diesel (C15-18) (Istadi et al, 2020). The selectivity of the resulting biofuel fraction was determined using equation (1) (Ashokkumar et al, 2018).…”

Section: Catalytic Deoxygenation Of Oil Into Greenmentioning

confidence: 99%

Conversion of Nyamplung Oil into Green Diesel through Catalytic Deoxygenation using NiAg/ZH Catalyst

Aziz¹,

Adhani

Maulana³

et al. 2022

Valensi

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Nyamplung oil (Calophyllum inophyllum L) can be converted into green diesel by the catalytic deoxygenation method. Bimetallic catalyst NiAg supported by hierarchical natural zeolite (NiAg/ZH) can be used in this method. This study aims to determine the characteristics of the NiAg/ZH catalyst and the optimal conditions for the catalytic deoxygenation of nyamplung oil into green diesel. The NiAg/ZH catalyst was synthesized by wet impregnation with a total metal concentration of 10% and a mass ratio of Ni/Ag of 4. X-Ray Diffraction, Surface Area Analyzer and NH3-TPD characterized the catalyst. Catalytic deoxygenation of Nyamplung oil was carried out by varying the temperature (325, 350 and 375 °C) and reaction time (1, 2 and 3 hours) with a catalyst dosage of 5%. The composition of the product was analyzed using Gas Chromatography-Mass Spectroscopy. The catalyst XRD spectrum showed a peak at 2θ = 22.38° (clinoptilolite zeolite), 44.42° (Ni) and 38.21° (Ag). The surface area of the catalyst is 46.7024 m2/g, the pore volume is 0.0813 cc/g, the average pore diameter is 6.9632 nm, and the deposit is 1.6882 mmol/g. The optimum catalytic deoxygenation of nyamplung oil was obtained at 350 °C and 3 hours with a gasoline selectivity of 3.51%, kerosene 4.73%, and 62.02% green diesel.

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Bimetallic Co–Ni/TiO2 catalysts for selective hydrogenation of cinnamaldehyde

Cited by 21 publications

References 43 publications

Catalytic Decomposition of Methane to Hydrogen over Al2O3 Supported Mono- and Bimetallic Catalysts

Catalytic Decomposition of Methane to Hydrogen over Al2O3 Supported Mono- and Bimetallic Catalysts

Anisole hydrodeoxygenation over Ni–Co bimetallic catalyst: a combination of experimental, kinetic and DFT study

Conversion of Nyamplung Oil into Green Diesel through Catalytic Deoxygenation using NiAg/ZH Catalyst

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