Atomically dispersed zeolite-supported rhodium complex: Selective and stable catalyst for acetylene semi-hydrogenation
Journal Article
·
· Journal of Catalysis
- Koç Univ., Istanbul (Turkey); SLAC
- Koç Univ., Istanbul (Turkey)
- Bogazici Univ., Istanbul (Turkey)
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- University of Texas Rio Grande Valley, Edinburg, TX (United States)
- Univ. of California, Davis, CA (United States)
In this study, supported rhodium catalysts are known to be unselective for semi-hydrogenation reactions. Here, by tuning the electronic structure of supported mononuclear rhodium sites determined by the metal nuclearity and the electron-donor properties of the support, we report that atomically dispersed HY zeolite-supported rhodium with reactive acetylene ligands affords a stable ethylene selectivity > 90 % for acetylene semi-hydrogenation at 373 K and atmospheric pressure, even when ethylene is present in a large excess over acetylene. Infrared and X-ray absorption spectra and measurements of rates of the catalytic reaction complemented with calculations at the level of density functional theory show how the catalyst performance depends on the electronic structure of the rhodium, influenced by the support as a ligand that is a weak electron donor.
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Univ. of California, Davis, CA (United States)
- Sponsoring Organization:
- National Center for High Performance Computing of Turkey (UHEM); USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division (CSGB)
- Grant/Contract Number:
- AC02-76SF00515; FG02-04ER15513
- OSTI ID:
- 2328668
- Alternate ID(s):
- OSTI ID: 2222514
- Journal Information:
- Journal of Catalysis, Journal Name: Journal of Catalysis Vol. 429; ISSN 0021-9517
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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