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  Tailoring the Surface Structure of Silicon Carbide Support for Copper Catalyzed Ethanol Dehydrogenation

Li, M.-Y., Lu, W.-D., He, L., Schüth, F., & Lu, A.-H. (2019). Tailoring the Surface Structure of Silicon Carbide Support for Copper Catalyzed Ethanol Dehydrogenation. ChemCatChem, 11(1), 481-487. doi:10.1002/cctc.201801742.

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 Urheber:
Li, Meng-Yue1, Autor
Lu, Wen-Duo1, Autor
He, Lei1, Autor
Schüth, Ferdi2, Autor           
Lu, An-Hui1, Autor
Affiliations:
1The State Key Laboratory of Fine Chemicals School of Chemical Engineering, Dalian University of Technology, Dalian, 116024 P.R. China, ou_persistent22              
2Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445589              

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Schlagwörter: SiC, surface structure, copper, ethanol, dehydrogenation
 Zusammenfassung: The production of acetaldehyde through biomass-derived ethanol dehydrogenation is a sustainable alternative compared to the fossil-feedstock based process, for which Cu-based catalysts are considered to be the most efficient. Herein, we modified the surface of silicon carbide (SiC) to alter the properties of the interface from SiO2-rich to C-rich, and we prepared a series of Cu-supported catalysts (Cu/SiC, Cu/SiO2/SiC, and Cu/C/SiC) with the aim of insight into the effect of the interface structure and composition on catalytic dehydrogenation of ethanol. At 280 °C, the Cu/SiO2/SiC catalyst exhibits high ethanol conversion due to the excellent dispersion of Cu nanoparticles promoted by SiO2-rich interface. In contrast, Cu nanoparticles dispersed on C/SiC shows somewhat lower activity but excellent acetaldehyde selectivity with trace amounts of by-products under identical reaction conditions. This difference is attributed to the fast removal of acetaldehyde because of its low affinity for the relatively inert C-rich interface (C/SiC). This work provides an in-depth understanding of Cu-Si-C multi-interfacial structure and the ethanol dehydrogenation behavior, which may shed light on the design of novel catalysts with tailored interfacial structures.

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Sprache(n): eng - English
 Datum: 2018-10-272018-11-222019-01-09
 Publikationsstatus: Online veröffentlicht
 Seiten: 7
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1002/cctc.201801742
 Art des Abschluß: -

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Titel: ChemCatChem
  Andere : ChemCatChem
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Weinheim : Wiley-VCH
Seiten: - Band / Heft: 11 (1) Artikelnummer: - Start- / Endseite: 481 - 487 Identifikator: ISSN: 1867-3880
CoNE: https://pure.mpg.de/cone/journals/resource/1867-3880