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Title: Atomically dispersed zeolite-supported rhodium complex: Selective and stable catalyst for acetylene semi-hydrogenation

Journal Article · · Journal of Catalysis
 [1]; ORCiD logo [1];  [1];  [2]; ORCiD logo [3]; ORCiD logo [3];  [3];  [2]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [4]; ORCiD logo [2]; ORCiD logo [5]; ORCiD logo [3]; ORCiD logo [1]
  1. Koç Univ., Istanbul (Turkey)
  2. Bogazici Univ., Istanbul (Turkey)
  3. SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
  4. University of Texas Rio Grande Valley, Edinburg, TX (United States)
  5. 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:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division (CSGB); National Center for High Performance Computing of Turkey (UHEM); USDOE
Grant/Contract Number:
AC02-76SF00515; FG02-04ER15513; 1006502019
OSTI ID:
2328668
Alternate ID(s):
OSTI ID: 2222514
Journal Information:
Journal of Catalysis, Vol. 429; ISSN 0021-9517
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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