Low-Temperature Exsolution of Rh from Mixed ZnFeRh Oxides toward Stable and Selective Catalysts in Liquid-Phase Hydroformylation.

ABSTRACT: The exsolution of metal nanoparticles offers a promising strategy to enhance catalyst stability and fine-tune metal-support interactions. Expanding the use of exsolved nanoparticles in heterogeneous catalysis requires the development of low-temperature (T < 400 °C) exsolution processes. In this study, we report the synthesis of phase-pure ZnFe_2-xRh_xO₄ metal oxide precursors with a spinel-type crystal structure. The isomorphic substitution of Fe³⁺ in the host lattice by Rh³⁺ was confirmed by X-ray diffraction and Raman spectroscopy combined with DFT calculations. The hydrothermal synthesis method of the oxide precursors was specifically chosen so that very small oxide particles of 10-20 nm were obtained, which enabl

SUBMITTER: Delgado D 

PROVIDER: S-EPMC11848930 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature