| Autor: |
Sereewatthanawut, I., Sornchamni, T., Siri-nguan, N., Laosiripojana, N., Li, K., Tongnan, V., Maneesard, P., Swadchaipong, N., Hartley, U. W. |
| Zdroj: |
Reaction Kinetics, Mechanisms & Catalysis; Aug2023, Vol. 136 Issue 4, p1965-1981, 17p |
| Abstrakt: |
Ba0.95La0.05FeO3 (BLF) was synthesized using a sol–gel method. The catalytic activity of the BLF catalyst towards the co-splitting of H2O/CO2 was investigated in a packed bed reactor and micro-channel reactor for comparison purposes. At the maximum reduction temperature of this study (700 °C), the oxygen vacancies of 3508 µmol/g were achieved. The H2O-TPSR and CO2-TPSR results revealed that H2O splitting took place at temperatures ranging from 400 to 700 °C while the CO2 splitting occurred at temperatures higher than 600 °C. The activation energy of H2O splitting and CO2 splitting was calculated at 23 and 124 kJ/mol, respectively. FTIR results suggested that the active hydroxyl group was responsible for H2O splitting, whereas the oxygen vacancy played a role in CO2 splitting. The micro-channel reactor was found to be advantageous for only the CO2 splitting. The hydroxyl groups were believed to be located on the catalyst's surface, while the oxygen vacancies were more likely present within the catalyst's bulk. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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