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- Title
Sinter‐Resistant Platinum Catalyst Supported by Metal–Organic Framework.
- Authors
Martinson, Alex B. F.; Kim, In Soo; Hupp, Joseph T.; Li, Zhanyong; Vermeulen, Nicolaas A.; Farha, Omar K.; Zheng, Jian; Vjunov, Aleksei; Camaioni, Donald M.; Fulton, John L.; Lercher, Johannes A.; Platero‐Prats, Ana E.; Gallington, Leighanne C.; Chapman, Karena W.; Mavrandonakis, Andreas; Webber, Thomas E.; Penn, R. Lee; Cramer, Christopher J.; Pellizzeri, Steven; Getman, Rachel B.
- Abstract
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.
- Subjects
PLATINUM catalysts; HYDROGENATION; ATOMIC layer deposition; ATOMIC absorption spectroscopy; ZIRCONIUM oxide
- Publication
Angewandte Chemie, 2018, Vol 130, Issue 4, p921
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201708092