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Sol-Gel Synthesis of Ceria-Zirconia-Based High-Entropy Oxides as High-Promotion Catalysts for the Synthesis of 1,2-Diketones from Aldehyde

Tatar, Dalibor; Kojčinović, Jelena; Marković, Berislav; Széchenyi, Aleksandar; Miletić, Aleksandar; Nagy, Sándor Balázs; Ziegenheim, Szilveszter; Szenti, Imre; Sapi, Andras; Kukovecz, Ákos; Dinjar, Kristijan; Tang, Yushu ORCID iD icon; Stenzel, David; Varga, Gábor; Djerdj, Igor


Efficient Lewis-acid-catalyzed direct conversion of aldehydes to 1,2-diketones in the liquid phase was enabled by using newly designed and developed ceria–zirconia-based high-entropy oxides (HEOs) as the actual catalysts. The synergistic effect of various cations incorporated in the same oxide structure (framework) was partially responsible for the efficiency of multicationic materials compared to the corresponding single-cation oxide forms. Furthermore, a clear, linear relationship between the Lewis acidity and the catalytic activity of the HEOs was observed. Due to the developed strategy, exclusively diketone-selective, recyclable, versatile heterogeneous catalytic transformation of aldehydes can be realized under mild reaction conditions.

Verlagsausgabe §
DOI: 10.5445/IR/1000141448
Veröffentlicht am 21.12.2021
DOI: 10.3390/molecules26206115
Zitationen: 7
Web of Science
Zitationen: 6
Zitationen: 7
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 1420-3049
KITopen-ID: 1000141448
HGF-Programm 43.31.01 (POF IV, LK 01) Multifunctionality Molecular Design & Material Architecture
Erschienen in Molecules
Verlag MDPI
Band 26
Heft 20
Seiten Art. Nr.: 6115
Vorab online veröffentlicht am 10.10.2021
Schlagwörter 1,2-diketone-selective conversion of aldehydes; ceria; ceria–zirconia-based multimetallic oxides; high-entropy oxides (HEOs); Lewis acid-promoted direct synthesis of 1,2-diketone; pinacol-type oxidative coupling of aldehydes; sol-gel synthesis
Nachgewiesen in Scopus
Web of Science
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