Low temperature CO2 methanation on hydrothermal synthesis of Ni-Ba/Sm2O3 catalysts
A low temperature CO2 methanation is a thermodynamically favorable route to produce highly selective methane while preventing catalyst deactivation. Ni-Ba/Sm2O3 catalysts synthesized using one-pot hydrothermal method exhibited enhanced reducibility with high CO2 adsorption capacity to achieve CO2 co...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-01-01
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| Series: | Sustainable Chemistry for Climate Action |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772826923000214 |
| _version_ | 1797398882052734976 |
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| author | Athirah Ayub Hasliza Bahruji Abdul Hanif Mahadi Amira Afra Adam |
| author_facet | Athirah Ayub Hasliza Bahruji Abdul Hanif Mahadi Amira Afra Adam |
| author_sort | Athirah Ayub |
| collection | DOAJ |
| description | A low temperature CO2 methanation is a thermodynamically favorable route to produce highly selective methane while preventing catalyst deactivation. Ni-Ba/Sm2O3 catalysts synthesized using one-pot hydrothermal method exhibited enhanced reducibility with high CO2 adsorption capacity to achieve CO2 conversion at low temperatures. CO2 conversion occurred at 200 °C with 5% conversion, progressively increasing to reach equilibrium at 400 °C with 100% selectivity to methane. BaO promotes surface oxygen vacancy in Sm2O3, which is responsible for forming bidentate formate species during CO2 methanation. Comparative DRIFTS analysis with Ni-Ba/Sm2O3 synthesized using impregnation indicates the catalysts followed different mechanistic pathways depending on the amount of surface oxygen vacancy generated by BaO/Sm2O3 proximity. |
| first_indexed | 2024-03-09T01:31:56Z |
| format | Article |
| id | doaj.art-18eee32532ac4e9ca2297c0058119902 |
| institution | Directory Open Access Journal |
| issn | 2772-8269 |
| language | English |
| last_indexed | 2024-03-09T01:31:56Z |
| publishDate | 2023-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Sustainable Chemistry for Climate Action |
| spelling | doaj.art-18eee32532ac4e9ca2297c00581199022023-12-09T06:09:29ZengElsevierSustainable Chemistry for Climate Action2772-82692023-01-013100032Low temperature CO2 methanation on hydrothermal synthesis of Ni-Ba/Sm2O3 catalystsAthirah Ayub0Hasliza Bahruji1Abdul Hanif Mahadi2Amira Afra Adam3Centre for Advanced Material and Energy Sciences, Universiti Brunei Darussalam, Jalan Tungku Link, Bandar Seri Begawan, BE1410, Brunei DarussalamCorresponding author.; Centre for Advanced Material and Energy Sciences, Universiti Brunei Darussalam, Jalan Tungku Link, Bandar Seri Begawan, BE1410, Brunei DarussalamCentre for Advanced Material and Energy Sciences, Universiti Brunei Darussalam, Jalan Tungku Link, Bandar Seri Begawan, BE1410, Brunei DarussalamCentre for Advanced Material and Energy Sciences, Universiti Brunei Darussalam, Jalan Tungku Link, Bandar Seri Begawan, BE1410, Brunei DarussalamA low temperature CO2 methanation is a thermodynamically favorable route to produce highly selective methane while preventing catalyst deactivation. Ni-Ba/Sm2O3 catalysts synthesized using one-pot hydrothermal method exhibited enhanced reducibility with high CO2 adsorption capacity to achieve CO2 conversion at low temperatures. CO2 conversion occurred at 200 °C with 5% conversion, progressively increasing to reach equilibrium at 400 °C with 100% selectivity to methane. BaO promotes surface oxygen vacancy in Sm2O3, which is responsible for forming bidentate formate species during CO2 methanation. Comparative DRIFTS analysis with Ni-Ba/Sm2O3 synthesized using impregnation indicates the catalysts followed different mechanistic pathways depending on the amount of surface oxygen vacancy generated by BaO/Sm2O3 proximity.http://www.sciencedirect.com/science/article/pii/S2772826923000214CO2MethanationDRIFTSMechanismLow temperature |
| spellingShingle | Athirah Ayub Hasliza Bahruji Abdul Hanif Mahadi Amira Afra Adam Low temperature CO2 methanation on hydrothermal synthesis of Ni-Ba/Sm2O3 catalysts Sustainable Chemistry for Climate Action CO2 Methanation DRIFTS Mechanism Low temperature |
| title | Low temperature CO2 methanation on hydrothermal synthesis of Ni-Ba/Sm2O3 catalysts |
| title_full | Low temperature CO2 methanation on hydrothermal synthesis of Ni-Ba/Sm2O3 catalysts |
| title_fullStr | Low temperature CO2 methanation on hydrothermal synthesis of Ni-Ba/Sm2O3 catalysts |
| title_full_unstemmed | Low temperature CO2 methanation on hydrothermal synthesis of Ni-Ba/Sm2O3 catalysts |
| title_short | Low temperature CO2 methanation on hydrothermal synthesis of Ni-Ba/Sm2O3 catalysts |
| title_sort | low temperature co2 methanation on hydrothermal synthesis of ni ba sm2o3 catalysts |
| topic | CO2 Methanation DRIFTS Mechanism Low temperature |
| url | http://www.sciencedirect.com/science/article/pii/S2772826923000214 |
| work_keys_str_mv | AT athirahayub lowtemperatureco2methanationonhydrothermalsynthesisofnibasm2o3catalysts AT haslizabahruji lowtemperatureco2methanationonhydrothermalsynthesisofnibasm2o3catalysts AT abdulhanifmahadi lowtemperatureco2methanationonhydrothermalsynthesisofnibasm2o3catalysts AT amiraafraadam lowtemperatureco2methanationonhydrothermalsynthesisofnibasm2o3catalysts |