A Single-Site Platinum CO Oxidation Catalyst in Zeolite KLTL: Microscopic and Spectroscopic Determination of the Locations of the Platinum Atoms

A stable site‐isolated mononuclear platinum catalyst with a well‐defined structure is presented. Platinum complexes supported in zeolite KLTL were synthesized from [Pt(NH3)4](NO3)2, oxidized at 633 K, and used to catalyze CO oxidation. IR and X‐ray absorption spectra and electron micrographs determi...

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Bibliographic Details
Published in:Angewandte Chemie (International ed.) 2014-08, Vol.53 (34), p.8904-8907
Main Authors: Kistler, Joseph D., Chotigkrai, Nutchapon, Xu, Pinghong, Enderle, Bryan, Praserthdam, Piyasan, Chen, Cong-Yan, Browning, Nigel D., Gates, Bruce C.
Format: Article
Language:English
Subjects:
Atomic beam spectroscopy
Atoms & subatomic particles
Carbon monoxide
Catalysts
electron microscopy
EXAFS
N12994
Oxidation
Pictures
Platinum
Porosity
single-site catalysts
Spectroscopy
Zeolites
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Summary:A stable site‐isolated mononuclear platinum catalyst with a well‐defined structure is presented. Platinum complexes supported in zeolite KLTL were synthesized from [Pt(NH3)4](NO3)2, oxidized at 633 K, and used to catalyze CO oxidation. IR and X‐ray absorption spectra and electron micrographs determine the structures and locations of the platinum complexes in the zeolite pores, demonstrate the platinum‐support bonding, and show that the platinum remained site isolated after oxidation and catalysis. In the right spot: A site‐isolated mononuclear platinum catalyst is supported in the zeolite KLTL with a stable and well‐defined structure. This catalyst was examined spectroscopically and imaged with STEM (see picture) to show locations of the platinum complexes (blue circles) within the zeolite pores.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201403353