Oxidative Strong Metal-Support Interaction Stabilized Single-Atom Catalysts for Heterogeneous Hydroformylation
Boyang Liu1, Muhan Li1, Xiao Chen2
1School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, P.R. China.
Journal of the American Chemical Society
|April 25, 2025
Summary
Researchers report the first oxidative strong metal-support interaction (SMSI) on single-atom catalysts (SACs) for enhanced hydroformylation. This method boosts catalytic activity and stability, offering a new design strategy for heterogeneous catalysts.
Area of Science:
- Catalysis
- Materials Science
- Surface Chemistry
Background:
- Strong metal-support interaction (SMSI) is key in heterogeneous catalysis, influencing catalyst performance.
- SMSI studies on single-atom catalysts (SACs) are limited, despite SACs bridging homogeneous and heterogeneous catalysis.
Purpose of the Study:
- To report oxidative SMSIs on SACs for the first time.
- To enhance hydroformylation activity and stability using this novel SMSI approach.
Main Methods:
- Utilized zirconium dioxide (ZrO2) supports for Rh single atoms.
- Employed calcination in air to induce oxidative SMSI (encapsulation).
- Used H2 reduction to re-expose the Rh single atoms.
Main Results:
- Achieved a record turnover frequency (TOF) of 11,097 h-1 for heterogeneous hydroformylation.
- Demonstrated enhanced stability of embedded Rh against metal leaching.
- Observed encapsulation of Rh atoms by ZrO2 support via oxidative SMSI.
Conclusions:
- Oxidative SMSI is a viable strategy to enhance SACs for hydroformylation.
- This approach significantly improves catalytic activity and stability.
- Expands SMSI concepts and provides a pathway for designing advanced heterogeneous catalysts.
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