Towards mechanistic understanding of liquid-phase cinnamyl alcohol oxidation with \(\it tert\)-butyl hydroperoxide over noble-metal-free LaCo\(_{1–x}\)Fe\(_x\)O\(_3\) perovskites
- Noble‐metal‐free perovskite oxides are promising and well‐known catalysts for high‐temperature gas‐phase oxidation reactions, but their application in selective oxidation reactions in the liquid phase has rarely been studied. We report the liquid‐phase oxidation of cinnamyl alcohol over spray‐flame synthesized LaCo\(_{1–x}\)Fe\(_x\)O\(_3\) perovskite nanoparticles with \(\it tert\)‐butyl hydroperoxide (TBHP) as the oxidizing agent under mild reaction conditions. The catalysts were characterized by XRD, BET, EDS and elemental analysis. LaCo\(_{0.8}\)Fe\(_{0.2}\)O\(_3\) showed the best catalytic properties indicating a synergistic effect between cobalt and iron. The catalysts were found to be stable against metal leaching as proven by hot filtration, and the observed slight deactivation is presumably due to segregation as determined by EDS. Kinetic studies revealed an apparent activation energy of 63.6 kJ mol\(^{−1}\). Combining kinetic findings with TBHP decomposition as well as control experiments revealed a complex reaction network.
| Author: | Daniel WaffelGND, Baris AlkanGND, Qi FuGND, Yen-Ting ChenGND, Stefan SchmidtGND, Christof SchulzGND, Hartmut WiggersGND, Martin MuhlerORCiDGND, Baoxiang PengORCiDGND |
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| URN: | urn:nbn:de:hbz:294-71532 |
| DOI: | https://doi.org/10.1002/cplu.201900429 |
| Parent Title (English): | ChemPlusChem |
| Publisher: | Wiley-VCH Verlag GmbH & Co. KGaA |
| Document Type: | Article |
| Language: | English |
| Date of Publication (online): | 2020/05/13 |
| Date of first Publication: | 2019/08/06 |
| Publishing Institution: | Ruhr-Universität Bochum, Universitätsbibliothek |
| Tag: | Open Access Fonds; spray-flame synthesis heterogeneous catalysis; oxidation; perovskite phases; reactive intermediates |
| Volume: | 84 |
| Issue: | 8 |
| First Page: | 1155 |
| Last Page: | 1163 |
| Note: | Dieser Beitrag ist auf Grund des DEAL-Wiley-Vertrages frei zugänglich. |
| Institutes/Facilities: | Lehrstuhl für Technische Chemie, Laboratory of Industrial Chemistry |
| Dewey Decimal Classification: | Naturwissenschaften und Mathematik / Chemie, Kristallographie, Mineralogie |
| open_access (DINI-Set): | open_access |
| Licence (English): |  Creative Commons - CC BY-NC 4.0 - Attribution-NonCommercial 4.0 International |
