| Autor: |
Gazi, Md Jahiruddin, Panda, Satyajit, Shrivastaw, Vivek Kumar, Kaishyop, Jyotishman, Kumar, Sunil, Bordoloi, Ankur |
| Zdroj: |
Sustainable Chemistry for Climate Action; 20240101, Issue: Preprints |
| Abstrakt: |
In this study, a series of platinum (Pt)-doped strontium iron oxide (SrFe2O4) catalysts with varying particle sizes were synthesized through the four different catalysis synthesis methods such as solution combustion synthesis (SCS), co-precipitation (Co-PPT), oxalic acid assisted sol-gel (OXA) and, hydrothermal (HT). The objective was to investigate the impact of particle size on the catalytic activity and long-term stability of these four catalysts. The XRD and Raman results confirmed the formation of the SrFe2O4perovskite structure. HRTEM, SEM, and other characterizations revealed a clear correlation between the synthesis conditions and the resulting particle sizes. The highest %CH4conversion was around 95% for the catalyst prepared through Solution combustion synthesis and the catalyst was found to be thermally stable up to. 100 hours at 800°C with a negligible variation of conversion while maintaining the H2/CO ratio at 2.0. To gain insight into catalytic activity, stability, and selectivity of catalysts we have performed Temperature-programmed surface reaction (TPSR) at a controlled temperature ramping program. This study also includes the study of coke deposition on the spent catalysts through different characterization techniques. Furthermore, we have performed a kinetic study to find the initial rate of the reaction and the activation energy of the Pt-doped SrFe2O4catalyst and it has been found that activation energy was 35 KJ/mol for the catalyst Pt/SrFe2O4synthesis through the solution combustion method. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
