Coke-resistant Y2O3-promoted cobalt supported on mesoporous alumina for enhanced hydrogen production

Mahadi, Bahari and Setiabudi, H. D. and Nishino, Tomomichi and Ayas, Nezihe and Vo, Dai-Viet N. (2021) Coke-resistant Y2O3-promoted cobalt supported on mesoporous alumina for enhanced hydrogen production. Journal of the Energy Institute, 94. pp. 272-284. ISSN 1743-9671. (Published)

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Abstract

In this work, the δ%Y–10%Co/MA (δ = 0, 1, 2, 3, and 5 wt%) catalysts synthesised by sequential incipient wetness impregnation were characterised and evaluated in CH4 dry reforming. Superior catalytic performances were shown by 3 wt% Y2O3 loading (CH4 conversion = 85.8%, and CO2 conversion = 90.5%), followed by 2 wt% > 5 wt% > 1 wt% > 0 wt% Y2O3 loading. This result was attributed to the favorable catalytic properties of 3 wt%Y–10%Co/MA including small Co particle size, high Co dispersion, high amount of atomic ratio (Co/Al), and high number of lattice oxygen vacancies. The excess Y2O3 addition (>3 wt%) led to inevitably blocked Co active sites and resulted in decreasing catalytic performance. The 3 wt% Y2O3 promoter loading recorded the lowest carbon deposited (7.0%) due to the highest oxygen vacancies (78.1%) compared to 1, 2 and 5 wt% Y2O3.

Item Type:	Article
Uncontrolled Keywords:	Mesoporous alumina, Y2O3 promoter, CH4 dry reforming, Cobalt-based catalyst, Syngas
Subjects:	T Technology > TP Chemical technology
Faculty/Division:	Faculty of Chemical and Process Engineering Technology
Depositing User:	Noorul Farina Arifin
Date Deposited:	22 Apr 2022 04:01
Last Modified:	22 Apr 2022 04:01
URI:	http://umpir.ump.edu.my/id/eprint/33850
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