[2C18-C21] Methane reaction catalysts (5)

[2C18] Selective methane oxidation catalyzed by supported iron oxide subnanoclusters prepared from a diiron-introduced polyoxometalate precursor

○Tomohiro Yabe¹, Keiju Wachi¹, Takaaki Suzuki¹, Kentaro Yonesato¹, Kosuke Suzuki¹, Kazuya Yamaguchi¹ (1. The University of Tokyo)

Keywords:polyoxometalate precursor, subnanocluster, methane oxidation

In this study, we used a diiron-introduced polyoxometalate as a precursor to form FeO_x subnanoclusters on SiO₂, which selectively converted CH₄ into formaldehyde and carbon monoxide. The FeO_x subnanocluster catalyst maintained catalytic activity even after 24 h. Various characterizations, such as STEM, X-ray absorption spectroscopy, and X-ray diffraction, revealed that the in situ formed FeO_x subnanoclusters were stabilized by WO_x nanoclusters originating from the polyoxometalate frameworks.