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- W3217227400 abstract "15 wt.%Ni-12.5 wt.%Co–Al 2 O 3 catalysts promoted with Fe, Mn, Cu, Zr, La, Ce, and Ba were prepared by a novel solid-state synthesis method and employed in CO 2 methanation reaction. BET, XRD, EDS, SEM, TPR, TGA, and FTIR analyses were conducted to identify the chemicophysical characteristics of the prepared samples. The addition of Fe, Mn, La, Ce, and Ba was effective to improve the catalytic performance of the 15 wt%Ni-12.5 wt%Co–Al 2 O 3 due to the higher CO 2 adsorption capacity of the promoted catalysts. Among the studied promoters, the Fe-promoted catalyst possessed the highest catalytic activity (X CO2 = 61.2% and S CH4 = 98.87% at 300 °C). Also, the effect of calcination temperature, feed composition, and GHSV on the performance of the 15 wt%Ni-12.5 wt%Co-5wt%Fe–Al 2 O 3 catalyst in CO 2 methanation reaction was assessed. The outcomes confirmed that the 15 wt%Ni-12.5 wt%Co-5wt%Fe–Al 2 O 3 catalyst with the BET area of 122.4 m 2 /g and the highest pore volume and largest pore diameter had the highest catalytic activity. Also, the catalytic performance in the methanation of carbon monoxide was studied, and 100% conversion of carbon monoxide was observed at 250 °C. • Catalytic hydrogenation of CO 2 to CH 4 was studied over Ni based catalysts. • Mechanochemical synthesis method was used for the catalyst synthesis. • The addition of Fe improved the reducibility and dispersion of nickel species. • The 15Ni-12.5Co–5Fe–Al 2 O 3 catalyst showed high activity and stability. • The highest CO 2 conversion was achieved at low reaction temperature of 350 °C." @default.
- W3217227400 created "2021-12-06" @default.
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- W3217227400 date "2022-01-01" @default.
- W3217227400 modified "2023-09-24" @default.
- W3217227400 title "Promoted Ni–Co–Al2O3 nanostructured catalysts for CO2 methanation" @default.
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- W3217227400 doi "https://doi.org/10.1016/j.ijhydene.2021.10.197" @default.
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