Supported sub-nanometer Ta oxide clusters as model catalysts for the selective epoxidation of cyclooctene

Gregor Zwaschka; Manuel Rondelli; Maximilian Krause; Marian David Rötzer; Mohamed N. Hedhili; Ulrich Heiz; Jean-Marie Basset; Florian Schweinberger; Valerio D’Elia

doi:10.1039/c7nj04275b

Supported sub-nanometer Ta oxide clusters as model catalysts for the selective epoxidation of cyclooctene

Gregor Zwaschka, Manuel Rondelli, Maximilian Krause, Marian David Rötzer, Mohamed N. Hedhili, Ulrich Heiz, Jean-Marie Basset, Florian Schweinberger, Valerio D’Elia

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15 Scopus citations

Abstract

The preparation of organic ligands-free, isolated tantalum oxide atoms (Ta1) and small clusters (Tan>1) on flat silicate supports was accomplished by ultra-high vacuum (UHV) techniques followed by oxidation in air. The resulting surface complexes were thoroughly characterized and tested as supported catalysts for the epoxidation of cycloalkenes. The observed catalytic performance highlights the potential of the applied method for the production of active catalysts and the study of well-defined, ligand-free metal oxide moieties.

Original language	English (US)
Pages (from-to)	3035-3041
Number of pages	7
Journal	New Journal of Chemistry
Volume	42
Issue number	4
DOIs	https://doi.org/10.1039/c7nj04275b
State	Published - 2018

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): KSA-C0069, UKC0020
Acknowledgements: This project was supported through collaboration with the KAUST Grant No. KSA-C0069/UKC0020); U.H. and F.F.S. acknowledge financial support through DFG project HE3454/23-1. V.D.E. acknowledges support through the Thailand Research Fund (Grant No. RSA6080059). The authors thank D.H. Anjum from the ‘Advanced Nanofabrication Imaging and Characterization’ lab at KAUST for his help in acquiring the STEM micrographs. Further we like to thank Prof. Schuster and co-workers at TUM for their fruitful discussions and clarifications in the field of trace analysis.

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https://repository.kaust.edu.sa/bitstream/10754/627019/1/c7nj04275b.pdf

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title = "Supported sub-nanometer Ta oxide clusters as model catalysts for the selective epoxidation of cyclooctene",

abstract = "The preparation of organic ligands-free, isolated tantalum oxide atoms (Ta1) and small clusters (Tan>1) on flat silicate supports was accomplished by ultra-high vacuum (UHV) techniques followed by oxidation in air. The resulting surface complexes were thoroughly characterized and tested as supported catalysts for the epoxidation of cycloalkenes. The observed catalytic performance highlights the potential of the applied method for the production of active catalysts and the study of well-defined, ligand-free metal oxide moieties.",

author = "Gregor Zwaschka and Manuel Rondelli and Maximilian Krause and R{\"o}tzer, {Marian David} and Hedhili, {Mohamed N.} and Ulrich Heiz and Jean-Marie Basset and Florian Schweinberger and Valerio D{\textquoteright}Elia",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledged KAUST grant number(s): KSA-C0069, UKC0020 Acknowledgements: This project was supported through collaboration with the KAUST Grant No. KSA-C0069/UKC0020); U.H. and F.F.S. acknowledge financial support through DFG project HE3454/23-1. V.D.E. acknowledges support through the Thailand Research Fund (Grant No. RSA6080059). The authors thank D.H. Anjum from the {\textquoteleft}Advanced Nanofabrication Imaging and Characterization{\textquoteright} lab at KAUST for his help in acquiring the STEM micrographs. Further we like to thank Prof. Schuster and co-workers at TUM for their fruitful discussions and clarifications in the field of trace analysis.",

year = "2018",

doi = "10.1039/c7nj04275b",

language = "English (US)",

volume = "42",

pages = "3035--3041",

journal = "New Journal of Chemistry",

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publisher = "Royal Society of Chemistry",

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T1 - Supported sub-nanometer Ta oxide clusters as model catalysts for the selective epoxidation of cyclooctene

AU - Zwaschka, Gregor

AU - Rondelli, Manuel

AU - Krause, Maximilian

AU - Rötzer, Marian David

AU - Hedhili, Mohamed N.

AU - Heiz, Ulrich

AU - Basset, Jean-Marie

AU - Schweinberger, Florian

AU - D’Elia, Valerio

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledged KAUST grant number(s): KSA-C0069, UKC0020 Acknowledgements: This project was supported through collaboration with the KAUST Grant No. KSA-C0069/UKC0020); U.H. and F.F.S. acknowledge financial support through DFG project HE3454/23-1. V.D.E. acknowledges support through the Thailand Research Fund (Grant No. RSA6080059). The authors thank D.H. Anjum from the ‘Advanced Nanofabrication Imaging and Characterization’ lab at KAUST for his help in acquiring the STEM micrographs. Further we like to thank Prof. Schuster and co-workers at TUM for their fruitful discussions and clarifications in the field of trace analysis.

PY - 2018

Y1 - 2018

N2 - The preparation of organic ligands-free, isolated tantalum oxide atoms (Ta1) and small clusters (Tan>1) on flat silicate supports was accomplished by ultra-high vacuum (UHV) techniques followed by oxidation in air. The resulting surface complexes were thoroughly characterized and tested as supported catalysts for the epoxidation of cycloalkenes. The observed catalytic performance highlights the potential of the applied method for the production of active catalysts and the study of well-defined, ligand-free metal oxide moieties.

AB - The preparation of organic ligands-free, isolated tantalum oxide atoms (Ta1) and small clusters (Tan>1) on flat silicate supports was accomplished by ultra-high vacuum (UHV) techniques followed by oxidation in air. The resulting surface complexes were thoroughly characterized and tested as supported catalysts for the epoxidation of cycloalkenes. The observed catalytic performance highlights the potential of the applied method for the production of active catalysts and the study of well-defined, ligand-free metal oxide moieties.

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UR - http://pubs.rsc.org/en/Content/ArticleLanding/2018/NJ/C7NJ04275B#!divAbstract

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DO - 10.1039/c7nj04275b

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EP - 3041

JO - New Journal of Chemistry

JF - New Journal of Chemistry

IS - 4

ER -

Supported sub-nanometer Ta oxide clusters as model catalysts for the selective epoxidation of cyclooctene

Abstract

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