Investigation of active species in methanation reaction over cerium based loading


  • Salmiah Jamal Mat Rosid Universiti Sultan Zainal Abidin
  • Wan Azelee Wan Abu Bakar Universiti Teknologi Malaysia
  • Susilawati Toemen Universiti Teknologi Malaysia
  • Nurulhuda Mohamad Yusoff Universiti Sultan Zainal Abidin
  • Azman Azid Universiti Sultan Zainal Abidin
  • Wan Nur Aini Wan Mokhtar Universiti Kebangsaan Malaysia



cerium, catalyst, carbon dioxide, methanation


A series of cerium oxide based catalyst has been studied by various cerium loadings that calcined at 1000oC using wet impregnation method. The potential Ru/Mn/Ce (5:35:60) /Al2O3 catalyst calcined at 1000oC was characterized using XRD, XPS, and BET analyses. As could be observed from the XRD analysis, at Ce ratio of 55% and 65%, both revealed the presence of RuO2 with tetragonal phase and intense, sharper peaks indicating to high crystallinity and in line with lower surface area, 50.95 m2/g in BET analysis. Meanwhile, CeO2 (cubic phase) and MnO2 (tetragonal phase) were also observed for 55%, 60%, and 65%, respectively. However, the presence of Al2O3 with rhombohedral phase at 55% and 65% was revealed as an inhibitor which decreased the CO2 conversion. The presence of active species on Ru/Mn/Ce (5:35:60) /Al2O3 catalyst has been confirmed using XPS analysis with the deconvolation peaks belonged to Ce4+ with the formation of CeO2 compound and Mn4+ for MnO2. The product formed in catalytic methanation was proposed to be H2O and CH3OH from GC and HPLC analysis.

Author Biographies

Salmiah Jamal Mat Rosid, Universiti Sultan Zainal Abidin

Unisza Science and Medicine Foundation Centre

Wan Azelee Wan Abu Bakar, Universiti Teknologi Malaysia

Department of Chemistry, Faculty of Science

Susilawati Toemen, Universiti Teknologi Malaysia

Department of Chemistry, Faculty of Science

Nurulhuda Mohamad Yusoff, Universiti Sultan Zainal Abidin

Unisza Science and Medicine Foundation Centre

Azman Azid, Universiti Sultan Zainal Abidin

Faculty of Bioresources and Food Industry

Wan Nur Aini Wan Mokhtar, Universiti Kebangsaan Malaysia

Faculty of Science and Technology


Li C. Yuan X. and Fujimoto K. 2014. Development of highly stable catalyst for methanol synthesis from carbon dioxide. Applied Catalysis A: General 469, 306-311.

Liu L. Shi J. Zhang X. Liu J. Z. 2015. Flower like Mn-doped CeO2 microstructure: Synthesis, characterization and catalytic properties. Journal of Chemistry, Article ID 254750. 1-11.

Luches P. and Valeri S. 2015. Structure, morphology and reducibility of epitaxial cerium oxide ultrathin films and nanostructures. Materials (Basel) 8(9), 5818-5833.

Matori K. A. Wah L. C. Hashim M. Ismail I. and Zaid M. H. M. 2012. Phase transformation of alumina made from waste aluminium via a precipitation technique. International Journal of Molecular Science 13(12), 16812-16821.

Mills G. A. and Fred W. S. 1974. Catalytic methanation. Catalysis Review: Science and Engineering 8(1), 159-210.

Rosid, S. J. M, Bakar, W. A. W. A. and Ali, R. 2015. Physicochemical study of supported cobalt-lanthanum oxide based catalysts for CO2/H2 methanation reaction. Clean Technology Environmental Policy, 17(1), 257-264.

Rosid, S. J. M, Bakar, W. A. W. A. and Ali, R. 2018. Characterization and modelling optimization on methanation activity using Box-Behnken design through cerium doped catalysts. Journal of Cleaner Production. 170. 278-287.

Rosid, S. J. M., Toemen, S., Bakar, W. A. W. A., Zamani, A. H., and Mokhtar W. N. A. W. 2019. Physicochemical characteristic of neodymium oxide-based catalyst for in-situ CO2/H2 methanation reaction. Journal of Saudi Chemical Society. 23, 284-293.

Thommes, M., Kaneko, K., Neimark, A. V., Oliver, J. P., Rodrigue-Reinoso, F., Ronquerol, J., and Sing, K. S. W. 2015. Physisorption of gases, with special reference to the evaluation of surface area and pore size distribution (IUPAC Technical Report). Pure and Applied Chemistry 87(9-10). 1051-1069.

Wang, L., He, H., Zhang, C., Wang, Y., and Zhang, B. 2016. Effect of precursors for manganese loaded ᵞ-Al2O3 catlaysts on plasma-catalytic removal of o-xylene. Chemical Engineering Journal 288(C), 406-413.

Yusof, N. B. M., Mohamad, F. I, Ruslan, H. 2010. Estimation of dispersion of carbon monoxide (CO), nitrogen dioxide (NO2), and carbon dioxide (CO2) from Port Klang - KLIA Road. Universiti Teknologi Nasional, Malaysia.

Zhang, Y. F., Zhang, G., Wang, L., Xu, Y., Sun, Y. 2012. Selective methanation of carbon monoxide over Ru based catalysts in H2-rich gases. Journal of Industrial and Engineering Chemistry 18(5), 1590-1597.






Special Issue on International Conference on Agriculture, Animal Sciences and Food Technology 2018 (Applied Sciences)