Effect of the Preparation Method on the Physicochemical Properties and the CO Oxidation Performance of Nanostructured CeO2/TiO2 Oxides
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials Synthesis
2.2. Materials Characterization
2.3. Catalytic Activity Studies
3. Results and Discussion
3.1. Textural/Structural Characterization
3.2. Morphological Characterization (TEM, SEM-EDS)
3.3. Redox Properties (H2-TPR)
3.4. Catalytic Evaluation Studies
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Sample | BET Analysis | XRD Analysis | H2-TPR | |||
---|---|---|---|---|---|---|
BET Area (m2 g−1) | Pore Volume (cm3 g−1) | Pore Size (nm) | Crystallite Size, DXRD (nm) CeO2 | Oxygen Storage Capacity (mmol O2 g−1) | Temperature of Peak Maximum (°C) | |
CeO2 NRs | 73.9 | 0.48 | 24.2 | 13 | 0.29 | 545 |
CeO2/TiO2-P | 41.5 | 0.13 | 9.3 | 12 | - | - |
CeO2/TiO2-H1 | 100.9 | 0.41 | 15.0 | 9 | 0.34 | 654 |
CeO2/TiO2-H2 | 63.2 | 0.48 | 24.1 | 14 | - | - |
CeO2/TiO2-S | 72.0 | 0.58 | 32.0 | 12 | 0.79 | 573 |
Sample | CO Conversion (%) | Specific Rate | |
---|---|---|---|
r (μmol g−1 s−1) | r (×100) (μmol m−2 s−1) | ||
CeO2-NRs | 5.1 | 0.056 | 0.075 |
CeO2/TiO2-P | 1.9 | 0.021 | 0.050 |
CeO2/TiO2-H1 | 5.3 | 0.058 | 0.057 |
CeO2/TiO2-H2 | 3.0 | 0.033 | 0.052 |
CeO2/TiO2-S | 11.1 | 0.121 | 0.168 |
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Stefa, S.; Lykaki, M.; Fragkoulis, D.; Binas, V.; Pandis, P.K.; Stathopoulos, V.N.; Konsolakis, M. Effect of the Preparation Method on the Physicochemical Properties and the CO Oxidation Performance of Nanostructured CeO2/TiO2 Oxides. Processes 2020, 8, 847. https://doi.org/10.3390/pr8070847
Stefa S, Lykaki M, Fragkoulis D, Binas V, Pandis PK, Stathopoulos VN, Konsolakis M. Effect of the Preparation Method on the Physicochemical Properties and the CO Oxidation Performance of Nanostructured CeO2/TiO2 Oxides. Processes. 2020; 8(7):847. https://doi.org/10.3390/pr8070847
Chicago/Turabian StyleStefa, Sofia, Maria Lykaki, Dimitrios Fragkoulis, Vasileios Binas, Pavlos K. Pandis, Vassilis N. Stathopoulos, and Michalis Konsolakis. 2020. "Effect of the Preparation Method on the Physicochemical Properties and the CO Oxidation Performance of Nanostructured CeO2/TiO2 Oxides" Processes 8, no. 7: 847. https://doi.org/10.3390/pr8070847