| Title: | Winning Combination of Cu and Fe Oxide Clusters with an Alumina Support for Low-Temperature Catalytic Oxidation of Volatile Organic Compounds |
| Author(s): | Zumbar T; Arcon I; Djinovic P; Aquilanti G; Zerjav G; Pintar A; Ristic A; Drazic G; Volavsek J; Mali G; Popova M; Zabukovec Logar N; Novak Tusar N; |
| Address: | "National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia. University of Nova Gorica, Vipavska 13, SI-5000 Nova Gorica, Slovenia. Elettra-Sincrotrone Trieste S.C.p.A., Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza, Trieste, Italy. Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 9, 1113 Sofia, Bulgaria" |
| Journal Title: | ACS Appl Mater Interfaces |
| ISSN/ISBN: | 1944-8252 (Electronic) 1944-8244 (Print) 1944-8244 (Linking) |
| Abstract: | "A gamma-alumina support functionalized with transition metals is one of the most widely used industrial catalysts for the total oxidation of volatile organic compounds (VOCs) as air pollutants at higher temperatures (280-450 degrees C). By rational design of a bimetal CuFe-gamma-alumina catalyst, synthesized from a dawsonite alumina precursor, the activity in total oxidation of toluene as a model VOC at a lower temperature (200-380 degrees C) is achieved. A fundamental understanding of the catalyst and the reaction mechanism is elucidated by advanced microscopic and spectroscopic characterizations as well as by temperature-programmed surface techniques. The nature of the metal-support bonding and the optimal abundance between Cu-O-Al and Fe-O-Al species in the catalysts leads to synergistic catalytic activity promoted by small amounts of iron (Fe/Al = 0.005). The change in the metal oxide-cluster alumina interface is related to the nature of the surfaces to which the Cu atoms attach. In the most active catalyst, the CuO(6) octahedra are attached to 4 Al atoms, while in the less active catalyst, they are attached to only 3 Al atoms. The oxidation of toluene occurs via the Langmuir-Hinshelwood mechanism. The presented material introduces a prospective family of low-cost and scalable oxidation catalysts with superior efficiency at lower temperatures" |
| Keywords: | "Iron oxide clusters, copper oxide clusters alumina support low-temperature total catalytic oxidation synergistic effect toluene;" |
| Notes: | "PubMed-not-MEDLINEZumbar, Tadej Arcon, Iztok Djinovic, Petar Aquilanti, Giuliana Zerjav, Gregor Pintar, Albin Ristic, Alenka Drazic, Goran Volavsek, Janez Mali, Gregor Popova, Margarita Zabukovec Logar, Natasa Novak Tusar, Natasa eng 2023/06/02 ACS Appl Mater Interfaces. 2023 Jun 14; 15(23):28747-28762. doi: 10.1021/acsami.3c02705. Epub 2023 Jun 2" |
