Centre for Advanced Material and Energy Sciences, Universiti Brunei Darussalam, Jalan Tungku Link, BE1410, Brunei Darussalam
BibTex Citation Data :
@article{BCREC10948, author = {Athirah Ayub and Hasliza Bahruji and Abdul Mahadi}, title = {Ni Nanoparticles on Reducible Metal Oxides (Sm2O3, CeO2, ZnO) as Catalysts for CO2 Methanation}, journal = {Bulletin of Chemical Reaction Engineering & Catalysis}, volume = {16}, number = {3}, year = {2021}, keywords = {Ni nanoparticles; metal oxides (Sm2O3, CeO2, ZnO); CO2; methanation}, abstract = { The activity of reducible metal oxide Sm 2 O 3, CeO 2 , and ZnO as Ni nanoparticles support was investigated for CO 2 methanation reaction. CO 2 methanation was carried out between 200 °C to 450 °C with the optimum catalytic activity was observed at 450 °C. The reducibility of the catalysts has been comparatively studied using H 2 -Temperature Reduction Temperature (TPR) method. The H 2 -TPR analysis also elucidated the formation of surface oxygen vacancies at temperature above 600 °C for 5Ni/Sm 2 O 3 and 5Ni/CeO 2 . The Sm 2 O 3 showed superior activity than CeO 2 presumably due to the transition of the crystalline phases under reducing environment. However, the formation of NiZn alloy in 5Ni/ZnO reduced the ability of Ni to catalyze methanation reaction. A highly dispersed Ni on Sm 2 O 3 created a large metal/support interfacial interaction to give 69% of CO 2 conversion with 100% selectivity at 450 °C. The 5Ni/Sm 2 O 3 exhibited superior catalytic performances with an apparent phase transition from cubic to a mixture of cubic and monoclinic phases over a long reaction, presumably responsible for the enhanced conversion after 10 h of reaction. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License ( https://creativecommons.org/licenses/by-sa/4.0 ). }, issn = {1978-2993}, pages = {641--650} doi = {10.9767/bcrec.16.3.10948.641-650}, url = {https://journal.bcrec.id/index.php/bcrec/article/view/10948} }
Refworks Citation Data :
The activity of reducible metal oxide Sm2O3, CeO2, and ZnO as Ni nanoparticles support was investigated for CO2 methanation reaction. CO2 methanation was carried out between 200 °C to 450 °C with the optimum catalytic activity was observed at 450 °C. The reducibility of the catalysts has been comparatively studied using H2-Temperature Reduction Temperature (TPR) method. The H2-TPR analysis also elucidated the formation of surface oxygen vacancies at temperature above 600 °C for 5Ni/Sm2O3 and 5Ni/CeO2. The Sm2O3 showed superior activity than CeO2 presumably due to the transition of the crystalline phases under reducing environment. However, the formation of NiZn alloy in 5Ni/ZnO reduced the ability of Ni to catalyze methanation reaction. A highly dispersed Ni on Sm2O3 created a large metal/support interfacial interaction to give 69% of CO2 conversion with 100% selectivity at 450 °C. The 5Ni/Sm2O3 exhibited superior catalytic performances with an apparent phase transition from cubic to a mixture of cubic and monoclinic phases over a long reaction, presumably responsible for the enhanced conversion after 10 h of reaction. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
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