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Investigation of active species in methanation reaction over cerium based loading

Jamal Mat Rosid, Salmiah and Wan Abu Bakar, Wan Azelee and Toemen, Susilawati and Mohamad Yusoff, Nurulhuda and Azid, Azman and Wan Mokhtar, Wan Nur Aini (2019) Investigation of active species in methanation reaction over cerium based loading. Malaysian Journal of Fundamental and Applied Sciences (SI). pp. 319-323. ISSN 2289-5981


Official URL: http://dx.doi.org/10.11113/mjfas.v15n2-1.1555


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.

Item Type:Article
Uncontrolled Keywords:cerium, catalyst, carbon dioxide, methanation
Subjects:Q Science > QD Chemistry
ID Code:88012
Deposited By: Yanti Mohd Shah
Deposited On:15 Dec 2020 10:17
Last Modified:15 Dec 2020 10:17

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