|
|||||
|
|
Sinter‐Resistant Platinum Catalyst Supported by Metal–Organic Framework |
|
| Authors: | Dr. In Soo Kim Dr. Zhanyong Li Dr. Jian Zheng Dr. Ana E. Platero‐Prats Dr. Andreas Mavrandonakis Dr. Steven Pellizzeri Dr. Magali Ferrandon Aleksei Vjunov Dr. Leighanne C. Gallington Thomas E. Webber Dr. Nicolaas A. Vermeulen Prof. R. Lee Penn Prof. Rachel B. Getman Prof. Christopher J. Cramer Dr. Karena W. Chapman Dr. Donald M. Camaioni Dr. John L. Fulton Prof. Johannes A. Lercher Prof. Omar K. Farha Prof. Joseph T. Hupp Dr. Alex B. F. Martinson |
| Affiliation: | 1. Materials Science Division, Argonne National Lab, Argonne, USA;2. Nanophotonics Center, Korea Institute of Science and Technology, Seoul, South Korea;3. Department of Chemistry, Northwestern University, Evanston, USA;4. Institute for Integrated Catalysis, Pacific Northwest National Lab, Richland, WA, USA;5. X-ray Science Division, Argonne National Lab, Argonne, IL, USA;6. Department of Chemistry, University of Minnesota, Minneapolis, MN, USA;7. Chemical and Biomolecular Engineering, Clemson University, Clemson, SC, USA;8. Chemical Sciences and Engineering Division, Argonne National Lab, Argonne, IL, USA;9. Department of Chemistry and Catalysis Research Institute, Technische Universit?t München, Garching, Germany |
| Abstract: | Single atoms and few‐atom clusters of platinum are uniformly installed on the zirconia nodes of a metal‐organic framework (MOF) NU‐1000 via targeted vapor‐phase synthesis. The catalytic Pt clusters, site‐isolated by organic linkers, are shown to exhibit high catalytic activity for ethylene hydrogenation while exhibiting resistance to sintering up to 200 °C. In situ IR spectroscopy reveals the presence of both single atoms and few‐atom clusters that depend upon synthesis conditions. Operando X‐ray absorption spectroscopy and X‐ray pair distribution analyses reveal unique changes in chemical bonding environment and cluster size stability while on stream. Density functional theory calculations elucidate a favorable reaction pathway for ethylene hydrogenation with the novel catalyst. These results provide evidence that atomic layer deposition (ALD) in MOFs is a versatile approach to the rational synthesis of size‐selected clusters, including noble metals, on a high surface area support. |
| Keywords: | atomic layer deposition (ALD) heterogeneous catalysis metal– organic frameworks (MOFs) platinum sinter-resistance |