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  Aerobic homocoupling of phenylboronic acid on Mg–Al mixed-oxides-supported Au nanoparticles

Wang, L., Wang, H., Zhang, W., Zhang, J., Lewis, J. P., Meng, X., et al. (2013). Aerobic homocoupling of phenylboronic acid on Mg–Al mixed-oxides-supported Au nanoparticles. Journal of Catalysis, 298, 186-197. doi:10.1016/j.jcat.2012.11.020.

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 Urheber:
Wang, Liang1, Autor
Wang, Hong2, Autor
Zhang, Wei3, Autor           
Zhang, Jian4, Autor
Lewis, James P.2, Autor
Meng, Xiangju4, Autor
Xiao, Feng-Shou4, Autor
Affiliations:
1State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130012, China, ou_persistent22              
2Department of Physics, West Virginia University, Morgantown, WV 26506-6315, USA, ou_persistent22              
3Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              
4Key Lab of Applied Chemistry of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou 310028, China, ou_persistent22              

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Schlagwörter: Au nanoparticles; Mg–Al mixed oxides; Molecular oxygen; Phenylboronic acid; Aerobic homocoupling
 Zusammenfassung: Au nanoparticles are highly dispersed on Mg–Al mixed oxides by anion exchange (Au/MAO-AE) and homogeneous deposition–precipitation (Au/MAO-HDP). The XRD, UV–visible, and XPS spectra demonstrate that the Au species on both samples are present as metallic Au. The Au nanoparticles are directly confirmed by the transmission electron microscopy images. Very importantly, both Au/MAO-AE and Au/MAO-HDP catalysts show superior catalytic activity, selectivities, and recyclabilities in the aerobic homocoupling of phenylboronic acid, yielding biphenyl and phenol. During this reaction, H2O molecules from the system and hydroxyl groups on Mg–Al mixed oxides strongly influence the catalytic performance. Based on the catalytic data and XPS characterizations, a mechanism for aerobic homocoupling of phenylboronic on metallic Au nanoparticles is proposed. These catalytic data are in good agreement with those obtained from theoretical calculations.

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Sprache(n): eng - English
 Datum: 2012-11-042012-10-052012-11-072013-01-072013-02
 Publikationsstatus: Erschienen
 Seiten: 12
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1016/j.jcat.2012.11.020
 Art des Abschluß: -

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Titel: Journal of Catalysis
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: San Diego, CA. : Academic Press
Seiten: - Band / Heft: 298 Artikelnummer: - Start- / Endseite: 186 - 197 Identifikator: ISSN: 0021-9517
CoNE: https://pure.mpg.de/cone/journals/resource/954922645027