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On the surface structures and catalytic properties of Al-based intermetallics

Abstract : Replacing noble metal (Pd, Pt, Au) catalysts with inexpensive, environmentally harmless, active, selective, and stable substitutes is a big challenge for the chemical industry. Several aluminium-based complex intermetallic compounds have shown promises for alkynes and alkenes hydrogenation reactions, which are of interest in the chemical industry. It is the case for Al5Co2, Al13Co4 and Al13Fe4 quasicrystalline approximants. The study of their catalytic properties demands different approaches, both theoretical and experimental, in order to determine first their surface structures under ultra-high vacuum or reaction conditions, then their catalytic properties. The combination of surface science experiments (scanning tunneling microscopy, surface X-ray diffraction) and theoretical chemistry calculations (surface energies, adsorption energies and reaction pathways) allows for a better understanding of the key parameters behind the promising catalytic properties of these materials.
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Submitted on : Wednesday, June 9, 2021 - 10:34:10 AM
Last modification on : Sunday, June 26, 2022 - 3:09:36 AM
Long-term archiving on: : Friday, September 10, 2021 - 6:15:30 PM


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  • HAL Id : tel-03254779, version 1


Corentin Chatelier. On the surface structures and catalytic properties of Al-based intermetallics. Materials Science [cond-mat.mtrl-sci]. Université de Lorraine, 2020. English. ⟨NNT : 2020LORR0230⟩. ⟨tel-03254779⟩



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