Water-Induced Formation of Active Brønsted Acid Sites in MoO <sub>3</sub> /Al <sub>2</sub> O <sub>3</sub> Catalysts for Olefin Metathesis
Understanding the dynamic nature of catalyst surfaces under operational conditions remains a major challenge in heterogeneous catalysis. This study employs in situ IR and solid-state NMR spectroscopy to demonstrate that trace water in the activation environment critically controls the formation of active sites in MoO3/Al2O3 propylene metathesis catalysts. Usage of the TRAPDOR technique allowed to conclude that all active Brønsted acid sites (BAS) are associated with aluminum, and the presence of terminal Mo–OH groups on the partially hydrated MoO3/Al2O3 surface is unlikely.
Authors
- A. I. Nikiforov (ORCID: https://orcid.org/0000-0001-9797-5530)
- Irina I. Ivanova (ORCID: https://orcid.org/0000-0002-8742-2892)
- А. Г. Попов (ORCID: https://orcid.org/0000-0002-6900-8516)
- Evgeny A. Chesnokov
- Ilya A. Kostyukov
Institutions
- Russian Academy of Sciences (RU)
- Lomonosov Moscow State University (RU)
- A.V. Topchiev Institute of Petrochemical Synthesis (RU)
- Moscow State University (TJ)
Publication Details
- Journal
- The Journal of Physical Chemistry C
- Published
- 2025-12-27
- DOI
- https://doi.org/10.1021/acs.jpcc.5c06335
- Primary Topic
- Synthetic Organic Chemistry Methods
- Type
- article
- Field-Weighted Citation Impact
- 0.00