التفاصيل البيبلوغرافية
| العنوان: |
Low temperature CO2methanation on hydrothermal synthesis of Ni-Ba/Sm2O3catalysts |
| المؤلفون: |
Ayub, Athirah, Bahruji, Hasliza, Mahadi, Abdul Hanif, Adam, Amira Afra |
| المصدر: |
Sustainable Chemistry for Climate Action; 20230101, Issue: Preprints |
| مستخلص: |
A low temperature CO2methanation is a thermodynamically favorable route to produce highly selective methane while preventing catalyst deactivation. Ni-Ba/Sm2O3catalysts synthesized using one-pot hydrothermal method exhibited enhanced reducibility with high CO2adsorption capacity to achieve CO2conversion at low temperatures. CO2conversion 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 CO2methanation. Comparative DRIFTS analysis with Ni-Ba/Sm2O3synthesized using impregnation indicates the catalysts followed different mechanistic pathways depending on the amount of surface oxygen vacancy generated by BaO/Sm2O3proximity. |
| قاعدة البيانات: |
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