Liu, Jiquan ; Groszewicz, Pedro B. ; Wen, Qingbo ; Thankamony, Aany Sofia Lilly ; Zhang, Bin ; Kunz, Ulrike ; Sauer, Grit ; Xu, Yeping ; Gutmann, Torsten ; Buntkowsky, Gerd (2017)
Revealing Structure Reactivity Relationships in Heterogenized Dirhodium Catalysts by Solid-State NMR Techniques.
In: The Journal of Physical Chemistry C, 121 (32)
doi: 10.1021/acs.jpcc.7b06807
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Heterogenized dirhodium catalysts were prepared by anchoring the rhodium(II) trifluoroacetate dimer (Rh2(TFA)4) (TFA = trifluoroacetate) on the surface of the SBA-15 material bearing either amine or amine and carboxyl groups. After basic characterizations, the binding geometries of the catalysts were analyzed by 13C CP MAS and 15N CP MAS DNP NMR. 19F MAS NMR measurements were employed to quantify active catalyst sites in the heterogenized catalysts, which enables one to understand their catalytic performance in the cyclopropanation model between styrene and ethyl diazoacetate (EDA). The heterogeneous nature of the catalysts was confirmed by leaching and recyclability tests.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2017 |
| Autor(en): | Liu, Jiquan ; Groszewicz, Pedro B. ; Wen, Qingbo ; Thankamony, Aany Sofia Lilly ; Zhang, Bin ; Kunz, Ulrike ; Sauer, Grit ; Xu, Yeping ; Gutmann, Torsten ; Buntkowsky, Gerd |
| Art des Eintrags: | Bibliographie |
| Titel: | Revealing Structure Reactivity Relationships in Heterogenized Dirhodium Catalysts by Solid-State NMR Techniques |
| Sprache: | Englisch |
| Publikationsjahr: | 17 August 2017 |
| Verlag: | ACS Publications |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | The Journal of Physical Chemistry C |
| Jahrgang/Volume einer Zeitschrift: | 121 |
| (Heft-)Nummer: | 32 |
| DOI: | 10.1021/acs.jpcc.7b06807 |
| URL / URN: | https://doi.org/10.1021/acs.jpcc.7b06807 |
| Kurzbeschreibung (Abstract): | Heterogenized dirhodium catalysts were prepared by anchoring the rhodium(II) trifluoroacetate dimer (Rh2(TFA)4) (TFA = trifluoroacetate) on the surface of the SBA-15 material bearing either amine or amine and carboxyl groups. After basic characterizations, the binding geometries of the catalysts were analyzed by 13C CP MAS and 15N CP MAS DNP NMR. 19F MAS NMR measurements were employed to quantify active catalyst sites in the heterogenized catalysts, which enables one to understand their catalytic performance in the cyclopropanation model between styrene and ethyl diazoacetate (EDA). The heterogeneous nature of the catalysts was confirmed by leaching and recyclability tests. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Physikalische Metallkunde 07 Fachbereich Chemie 07 Fachbereich Chemie > Eduard Zintl-Institut > Fachgebiet Anorganische Chemie |
| Hinterlegungsdatum: | 15 Jan 2018 09:51 |
| Letzte Änderung: | 29 Mai 2018 10:42 |
| PPN: | |
| Sponsoren: | Financial support by the Deutsche Forschungsgemeinschaft (DFG) under contracts Bu-911-20-1 (DNP spectrometer) and Bu-911-26-1 is gratefully acknowledged. |
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