Atomically dispersed zeolite-supported rhodium complex: Selective and stable catalyst for acetylene semi-hydrogenation
Yükleniyor...
Tarih
2024
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
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.
Açıklama
Anahtar Kelimeler
Supported rhodium complexes, Zeolite, Acetylene semi-hydrogenation, Electronic structure effect, Density functional theory
Kaynak
Journal of Catalysis
WoS Q Değeri
Scopus Q Değeri
Q1
Cilt
429
Sayı
Künye
Kurtoğlu-Öztulum, Samira F., Zhao, Y., Hoffman, Adam S., Uzun, A., Demircan, O., Yordanli, Melisa S., Hong, J., Perez-Aguilar, Jorge E., Saltuk, A., Akgül, D., Ateşin, Tülay A., Aviyente, V., Gates, Bruce C., Bare, Simon R. (2024). Atomically dispersed zeolite-supported rhodium complex: Selective and stable catalyst for acetylene semi-hydrogenation. Journal of Catalysis, 429, 1-11.
