Abstract
Metal-support interactions (MSI) and their impact on catalytic
performance are well documented for oxide supports. In contrast, similar
effects have been rarely studied for carbon-supported catalysts.
Specifically, structure-activity correlations have remained elusive for
carbons due to their heterogeneous structure at the nanoscale.
Herein, we decreased the level of complexity of disordered nanocarbon supports with the objective of decoupling the effects of surface chemistry and graphitic character. Relationships between these isolated support features and the electronic properties of Pd metal nanoparticles (3-5 nm) were established for the liquid-phase hydrogenation of ,-unsaturated aldehydes. Trends in catalytic performance were corroborated with the evidence for MSI provided by hydrogen adsorption isotherms, aberration corrected transmission electron microscopy, synchrotron radiation based X-ray photoelectron spectroscopy, and density functional theory calculations. The observed correlations between the supports defect structure and the electronic properties of Pd are expected to set the foundation for the rational design of carbon supported catalysts. These results are envisioned to impact a vast array of reactions catalyzed by Pd/C, including hydrogenations, coupling, dehydrogenations, and oxidations.
Herein, we decreased the level of complexity of disordered nanocarbon supports with the objective of decoupling the effects of surface chemistry and graphitic character. Relationships between these isolated support features and the electronic properties of Pd metal nanoparticles (3-5 nm) were established for the liquid-phase hydrogenation of ,-unsaturated aldehydes. Trends in catalytic performance were corroborated with the evidence for MSI provided by hydrogen adsorption isotherms, aberration corrected transmission electron microscopy, synchrotron radiation based X-ray photoelectron spectroscopy, and density functional theory calculations. The observed correlations between the supports defect structure and the electronic properties of Pd are expected to set the foundation for the rational design of carbon supported catalysts. These results are envisioned to impact a vast array of reactions catalyzed by Pd/C, including hydrogenations, coupling, dehydrogenations, and oxidations.
Original language | English |
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Journal | American Chemical Society. Abstracts of Papers (at the National Meeting) |
Volume | 253 |
Number of pages | 1 |
ISSN | 0065-7727 |
Publication status | Published - 2018 |
Event | 253rd ACS National Meeting - San Francisco, United States Duration: 2 Apr 2017 → 6 Apr 2017 Conference number: 253 |
Conference
Conference | 253rd ACS National Meeting |
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Number | 253 |
Country/Territory | United States |
City | San Francisco |
Period | 02/04/2017 → 06/04/2017 |