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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Published inAngewandte Chemie Vol. 126; no. 34; pp. 9050 - 9053
Main Authors Kistler, Joseph D., Chotigkrai, Nutchapon, Xu, Pinghong, Enderle, Bryan, Praserthdam, Piyasan, Chen, Cong-Yan, Browning, Nigel D., Gates, Bruce C.
Format Journal Article
LanguageEnglish
German
Published Weinheim WILEY-VCH Verlag 18.08.2014
WILEY‐VCH Verlag
Wiley Subscription Services, Inc
Subjects
Atoms & subatomic particles
Bonding
Carbon monoxide
Catalysts
Chemistry
Electron micrographs
Elektronenmikroskopie
EXAFS
Ortsisolierte Katalysatoren
Oxidation
Platin
Platinum
Porosity
X-rays
Zeolites
Zeolithe
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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. An der richtigen Stelle: Ein ortsisolierter einkerniger Platinkatalysator findet sich im Zeolith KLTL als Träger mit einer stabilen und genau definierten Struktur. Der Katalysator wurde spektroskopisch untersucht und mit STEM abgebildet (siehe Bild; die Platinkomplexe in den Zeolithporen sind durch blaue Kreise gekennzeichnet; hervorgehoben ist der Platinkomplex in der Bildmitte, der sich an einer D‐Position befindet).
Bibliography:Department of Energy (DOE) Basic Energy Science - No. FG02-04ER15513; No. DE-SC0005822
Thailand research fund - No. DE-AC02-76SF00515; No. DE-AC05-76L01830
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ark:/67375/WNG-2FJHBGVC-2
This work was supported by the Department of Energy (DOE) Basic Energy Science Grants FG02-04ER15513 and DE-SC0005822 and the Royal Golden Jubilee PhD program of the Thailand research fund. We acknowledge beam time and support of beamline 4-1 at the Stanford Synchrotron Radiation Lightsource (SSRL), supported by DOE, Office of Science, Basic Energy Sciences, Contract DE-AC02-76SF00515. We acknowledge support through the Laboratory Directed Research and Development Program Chemical Imaging Initiative at Pacific Northwest National Laboratory (PNNL) and the Environmental Molecular Sciences Laboratory, a national scientific user facility sponsored by DOE's Office of Biological and Environmental Research at PNNL. PNNL is a multiprogram national laboratory operated by Battelle for DOE under Contract DE-AC05-76L01830.
ArticleID:ANGE201403353
These authors contributed equally to this work.
This work was supported by the Department of Energy (DOE) Basic Energy Science Grants FG02‐04ER15513 and DE‐SC0005822 and the Royal Golden Jubilee PhD program of the Thailand research fund. We acknowledge beam time and support of beamline 4–1 at the Stanford Synchrotron Radiation Lightsource (SSRL), supported by DOE, Office of Science, Basic Energy Sciences, Contract DE‐AC02‐76SF00515. We acknowledge support through the Laboratory Directed Research and Development Program Chemical Imaging Initiative at Pacific Northwest National Laboratory (PNNL) and the Environmental Molecular Sciences Laboratory, a national scientific user facility sponsored by DOE’s Office of Biological and Environmental Research at PNNL. PNNL is a multiprogram national laboratory operated by Battelle for DOE under Contract DE‐AC05‐76L01830.
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ISSN:0044-8249
1521-3757
DOI:10.1002/ange.201403353