Modulation of ODH Propane Selectivity by Zeolite Support Desilication: Vanadium Species Anchored to Al-Rich Shell as Crucial Active Sites
Abstract
:1. Introduction
2. Results and Discussion
2.1. Structure, Morphology, and Textural Properties
2.2. Acidity FT-IR Characterization with CO and Pyridine as the Probes
2.3. On the Nature of Vanadium Species
2.4. In Situ FT-IR Studies of ODH Process
2.5. Catalytic Properties of the System
3. Materials and Methods
3.1. Synthesis
3.2. X-ray Diffraction (XRD)
3.3. X-ray Fluorescence (XRF)
3.4. Scanning Electron Microscopy (SEM)
3.5. X-ray Absorption Spectroscopy (XAS)
3.6. Nuclear Magnetic Resonance (51V MAS NMR)
3.7. Temperature Programmed Reduction with Hydrogen (H2-TPR)
3.8. FT-IR Spectroscopy Studies of Probe Molecules Sorption
3.9. Operando DR UV-vis Spectroscopy Studies
3.10. Catalytic Tests
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Material | Si/Al a | SBET b | Smicro c | Smeso e | Vmicro c | Vmeso d | BAS f | LAS f | LASV | LASV/m2 | LASV/Vtotal | BAS Py450/Py170 g |
---|---|---|---|---|---|---|---|---|---|---|---|---|
m2·g−1 | m2·g−1 | m2·g−1 | cm3·g−1 | cm3·g−1 | µmol·g−1 | µmol·g−1 | µmol·g−1 | µmol g−1·m−2 | µmol cm–3 | [-] | ||
HY | 31 | 883 | 724 | 158 | 0.30 | 0.22 | 208 | 95 | - | - | - | 0.31 |
HYdeSi | 18 | 688 | 265 | 423 | 0.12 | 0.53 | 170 | 180 | - | - | - | 0.20 |
V-HY | 31 | 775 | 645 | 130 | 0.23 | 0.28 | 145 | 221 | 126 | 0.16 | 0.14 | 0.15 |
V-HYdeSi | 18 | 319 | 190 | 129 | 0.05 | 0.35 | 80 | 285 | 105 | 0.30 | 0.12 | 0.08 |
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Smoliło-Utrata, M.; Tarach, K.A.; Samson, K.; Gackowski, M.; Madej, E.; Korecki, J.; Mordarski, G.; Śliwa, M.; Jarczewski, S.; Podobiński, J.; et al. Modulation of ODH Propane Selectivity by Zeolite Support Desilication: Vanadium Species Anchored to Al-Rich Shell as Crucial Active Sites. Int. J. Mol. Sci. 2022, 23, 5584. https://doi.org/10.3390/ijms23105584
Smoliło-Utrata M, Tarach KA, Samson K, Gackowski M, Madej E, Korecki J, Mordarski G, Śliwa M, Jarczewski S, Podobiński J, et al. Modulation of ODH Propane Selectivity by Zeolite Support Desilication: Vanadium Species Anchored to Al-Rich Shell as Crucial Active Sites. International Journal of Molecular Sciences. 2022; 23(10):5584. https://doi.org/10.3390/ijms23105584
Chicago/Turabian StyleSmoliło-Utrata, Małgorzata, Karolina A. Tarach, Katarzyna Samson, Mariusz Gackowski, Ewa Madej, Józef Korecki, Grzegorz Mordarski, Michał Śliwa, Sebastian Jarczewski, Jerzy Podobiński, and et al. 2022. "Modulation of ODH Propane Selectivity by Zeolite Support Desilication: Vanadium Species Anchored to Al-Rich Shell as Crucial Active Sites" International Journal of Molecular Sciences 23, no. 10: 5584. https://doi.org/10.3390/ijms23105584