MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Mechanics of Materials
Positive Effects of CeO2 Promoter and Co-Reactant/CO on Methanation of CO2-Rich Gas over Ni/SBA-15 Catalyst
Nguyen T. T. VanLuu C. LocNguyen P. AnhHoang T. CuongNguyen Tri
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2020 Volume 61 Issue 7 Pages 1332-1338

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Abstract

NiO/SBA-15 catalysts modified by CeO2 were synthesized and studied for the hydrogenation of CO2-rich gas. Effect of CeO2 promoter on the physicochemical properties of the catalysts was investigated by BET, XRD, Raman spectroscopy, SEM, TEM, H2-TPR and CO2-TPD methods. The 4 mass% CeO2 addition improved reduction and dispersion of Ni, resulting in its higher activity in methanation, reaching CO2 conversion of 90% at 350°C. Furthermore, the performance of the prepared catalysts in methanation reaction was enhanced by adding small amount of CO (1 mol%) in the feedstock.

Fig. 11 CO2 conversion in methanation of mixture of 19 mol% CO2 with 1 mol% CO (case I - dashed lines) and with 1 mol% N2 (case II - solid lines) on Ni4Ce/SBA catalyst. Fullsize Image
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