Tracking Phase Transitions on Palladium Catalytic Bed Using In Situ Full-Field Hyperspectral XAS Imaging
Palavras-chave:
Hyperspectral XAS imaging, Metal-support interaction, Catalytic bedResumo
Catalysts composed of nanoparticles exhibit highly dynamic transformations during operation. However, studies under working conditions at the reactor scale remain limited. Full-field hyperspectral X-ray absorption spectroscopy (XAS) imaging is a promising technique for this type of analysis. In this study, we applied it to monitor phase transitions in Pd catalysts during treatment under varying H2 concentrations, aiming to understand the spatial influence of the support on the transformation dynamics.
Referências
1. S. B. Vendelbo, C. F. Elkjær, H. Falsig, I. Puspitasari, P. Dona, L. Mele, B. Morana, B. J. Nelissen, R. Van Rijn, J. F. Creemer, P. J. Kooyman and S. Helveg, Nat Mater. 2014, 13, 884–890.
2. V. Briois, J. Nelayah, C. La Fontaine, O. Roudenko, A. Beauvois, A. R. Passos and D. Alloyeau, ChemCatChem. 2024, e202400352, 1–14.
3. V. Briois, J. P. Itié, A. Polian, A. King, A. S. Trore, E. Marceau, O. Ersen, C. La Fontaine, L. Barthe, A. Beauvois, O. Roudenko and S. Belin, . 2024, 31, 1–21.
4. S. Syrenova, C. Wadell, F. A. A. Nugroho, T. A. Gschneidtner, Y. A. Diaz Fernandez, G. Nalin, D. ͆witlik, F. Westerlund, T. J. Antosiewicz, V. P. Zhdanov, K. Moth-Poulsen and C. Langhammer, Nat Mater. 2015, 14, 1236–1244.
5. B. E. Solsona, J. K. Edwards, P. Landon, A. F. Carley, A. Herzing, C. J. Kiely and G. J. Hutchings, Chemistry of Materials. 2006, 18, 2689–2695.
6. V. Briois, C. La Fontaine, S. Belin, L. Barthe, T. Moreno, V. Pinty, A. Carcy, R. Girardot and E. Fonda, J Phys Conf Ser. 2016, 712, 012149.
7. J. Jaumot, A. de Juan and R. Tauler, Chemometrics and Intelligent Laboratory Systems. 2015, 140, 1–12.
8. W. Jones, P. P. Wells, E. K. Gibson, A. Chutia, I. P. Silverwood, C. R. A. Catlow and M. Bowker, ChemCatChem. 2019, 11, 4334–4339.
