Insight into the influence of rare-earth promoter (CeO2, La2O3, Y2O3, and Sm2O3) addition toward methane dry reforming over Co/mesoporous alumina catalysts

Mahadi, Bahari and Herma Dina, Setiabudi and Nguyen, Trinh Duy and Phuong, Pham T. T. and Truong, Quang Duc and Aishah, Abdul Jalil and Nurul Aini, Razali and Vo, Dai-Viet N. (2020) Insight into the influence of rare-earth promoter (CeO2, La2O3, Y2O3, and Sm2O3) addition toward methane dry reforming over Co/mesoporous alumina catalysts. Chemical Engineering Science, 228 (115967). pp. 1-11. ISSN 0009-2509. (Published)

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Abstract

Co/mesoporous alumina (MA) catalysts promoted with Ce, La, Sm, and Y were evaluated via methane dry reforming. Co particle dispersion on MA was evidently improved after promoter incorporation, resulting in smaller crystallite size and lesser Co agglomeration. Unlike Ce and La promoters, the employment of Y and Sm promoters reduced catalyst reducibility by strengthening Co-MA interaction. The reactant conversions improved in the order of YCo/MA > LaCo/MA > CeCo/MA > SmCo/MA > Co/MA, while the amount of carbon deposit was recorded with the sequence of Co/MA > SmCo/MA > LaCo/MA > CeCo/MA > YCo/MA. Additionally, YCo/MA attained the highest activity (CH4 conversion = 85.8%, CO2 conversion = 92.2%) and possessed the lowest carbon deposition (7.02%) due to great Co dispersion, small Co particle size with strong Co-MA interaction and higher oxygen storage capacity. H2/CO ratios were obtained within 0.78-0.86, slightly lower than 1 in consequence of the reverse water-gas shift.

Item Type:	Article
Uncontrolled Keywords:	Mesoporous alumina, Methane dry reforming, Metal oxide promoters, Co catalysts, Syngas, Hydrogen
Subjects:	T Technology > TP Chemical technology
Faculty/Division:	Faculty of Chemical and Process Engineering Technology
Depositing User:	Miss. Ratna Wilis Haryati Mustapa
Date Deposited:	20 Jun 2022 06:11
Last Modified:	20 Jun 2022 06:11
URI:	http://umpir.ump.edu.my/id/eprint/28860
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