Sol-Gel Synthesis of Ceria-Zirconia-Based High-Entropy Oxides as High-Promotion Catalysts for the Synthesis of 1,2-Diketones from Aldehyde
Dalibor Tatar,
Jelena Kojčinović,
Berislav Marković,
Aleksandar Széchenyi,
Aleksandar Miletić,
Sándor Balázs Nagy,
Szilveszter Ziegenheim,
Imre Szenti,
Andras Sapi,
Ákos Kukovecz,
Kristijan Dinjar,
Yushu Tang,
David Stenzel,
Gábor Varga,
Igor Djerdj
Affiliations
Dalibor Tatar
Department of Chemistry, Josip Juraj Strossmayer University of Osijek, Cara Hadrijana 8/A, HR-31000 Osijek, Croatia
Jelena Kojčinović
Department of Chemistry, Josip Juraj Strossmayer University of Osijek, Cara Hadrijana 8/A, HR-31000 Osijek, Croatia
Berislav Marković
Department of Chemistry, Josip Juraj Strossmayer University of Osijek, Cara Hadrijana 8/A, HR-31000 Osijek, Croatia
Aleksandar Széchenyi
Department of Chemistry, Josip Juraj Strossmayer University of Osijek, Cara Hadrijana 8/A, HR-31000 Osijek, Croatia
Aleksandar Miletić
Faculty of Technical Sciences, University of Novi Sad, Trg Dositeja Obradovića 6, SRB-21000 Novi Sad, Serbia
Sándor Balázs Nagy
Department of Organic Chemistry, University of Szeged, Dóm tér 8., H-6720 Szeged, Hungary
Szilveszter Ziegenheim
Department of Organic Chemistry, University of Szeged, Dóm tér 8., H-6720 Szeged, Hungary
Imre Szenti
Department of Applied and Environmental Chemistry, University of Szeged, Rerrich Béla Sq. 1., H-6720 Szeged, Hungary
Andras Sapi
Department of Applied and Environmental Chemistry, University of Szeged, Rerrich Béla Sq. 1., H-6720 Szeged, Hungary
Ákos Kukovecz
Department of Applied and Environmental Chemistry, University of Szeged, Rerrich Béla Sq. 1., H-6720 Szeged, Hungary
Kristijan Dinjar
Department of Otorhinolaryngology and Maxillofacial Surgery, Faculty of Medicine, Josip Juraj Strossmayer University of Osijek, Cara Hadrijana 10/E, HR-31000 Osijek, Croatia
Yushu Tang
Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology, Hermann-von-Helmholtz-Platz 1, DE-76344 Eggenstein-Leopoldshafen, Germany
David Stenzel
Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology, Hermann-von-Helmholtz-Platz 1, DE-76344 Eggenstein-Leopoldshafen, Germany
Gábor Varga
Department of Physical Chemistry and Materials Science, University of Szeged, Rerrich Béla Sq. 1., H-6720 Szeged, Hungary
Igor Djerdj
Department of Chemistry, Josip Juraj Strossmayer University of Osijek, Cara Hadrijana 8/A, HR-31000 Osijek, Croatia
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.
