AEROBIC OXIDATION OF ALCOHOLS CATALYZED BY GOLD AND PALLADIUM SUPPORTED ON CERIUM OXIDE (CeO₂): A SCOPING REVIEW
DOI:
https://doi.org/10.63330/aurumpub.019-010Keywords:
Au–Pd, CeO₂, Aerobic alcohol oxidationAbstract
This scoping review, conducted in accordance with PRISMA-ScR guidelines, aimed to map the existing evidence on the use of Au, Pd, and Au–Pd bimetallic catalysts supported on CeO₂ for the aerobic oxidation of alcohols. The research question was formulated using the PCC framework (Population, Concept, and Context), and searches were carried out in Scopus, Web of Science, PubMed, ScienceDirect, and SpringerLink, covering the period from 2015 to 2025. In total, 18 studies were included. The findings indicate that the high catalytic performance of these systems arises from the interfacial and multifunctional nature of the metal–support interaction, which stabilizes active species (Auδ+, Pd²⁺) and leverages the Ce⁴⁺/Ce³⁺ redox cycle of CeO₂, promoting the formation of oxygen vacancies essential for O₂ activation. However, gaps remain regarding the influence of catalyst morphology and the limited exploration of aliphatic alcohols, given the predominance of benzyl alcohol as the model substrate. Overall, the results highlight the need for broader and more systematic investigations to advance the field.
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