Supported sub-nanometer Ta oxide clusters as model catalysts for the selective epoxidation of cyclooctene
Rötzer, Marian David
Hedhili, Mohamed N.
KAUST DepartmentPhysical Sciences and Engineering (PSE) Division
Chemical Science Program
KAUST Catalysis Center (KCC)
Imaging and Characterization Core Lab
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AbstractThe 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.
CitationZwaschka G, Rondelli M, Krause M, Rötzer MD, Hedhili MN, et al. (2018) Supported sub-nanometer Ta oxide clusters as model catalysts for the selective epoxidation of cyclooctene. New Journal of Chemistry. Available: http://dx.doi.org/10.1039/c7nj04275b.
SponsorsThis 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.
PublisherRoyal Society of Chemistry (RSC)
JournalNew Journal of Chemistry