Catalytic methanation over nanoparticle heterostructure of Ru/Fe/Ce/y-Al2O3 catalyst: performance and characterisation

• Main Authors: Iqbal, M. M. A., Toemen, S., Wan Abu Bakar, W. A., Abdul Razak, F. I., Mat Rosid, S. J., Wan Azelee, N. I.
• Format: Article
• Published: Elsevier Ltd. 2020
• Subjects: QD Chemistry
• Online Access: http://eprints.utm.my/id/eprint/93186/; http://dx.doi.org/10.1016/j.renene.2020.06.093

A novel trimetal-oxides (Ru/Fe/Ce) supported on γ-Al2O3 catalyst was synthesised by simple impregnation method and the activity was investigated at atmospheric pressure. The results showed that Ru/Fe/Ce (5:10:85)/γ-Al2O3 catalyst calcined at 1000 °C for 5 h was effective and gave a 97.20% of CO2 conversion at 275 °C with 93.5% of CH4 formation. The catalyst possesses medium-strength basic sites with the best reduction temperature of <200 °C. The mesoporous structure was covered with small, dispersed particles of spherical in shape. The catalyst is formed by nanoparticles below 10 nm with a surface area of 51 m2/g. The physicochemical analyses showed that the active sites of the potential catalyst Ru/Fe/Ce (5:10:85)/γ-Al2O3 are RuO2 (tetragonal), Fe2O3 (rhombohedral), γ-Al2O3 (cubic), and CeO2 (cubic), with a good distribution on the catalyst surface.