Abstract
Silica supported rhodium-iron catalysts were characterized with iron-57 Mossbauer spectra indicated that iron in the catalysts existed as iron(0) in the rhodium-iron alloy and iron(III) stabilized through the metal-support interaction. A part of iron(III) combined the rhodium-iron alloy and the silica as an anchor. The iron(III) to iron(0) ratio and Mossbauer effect parameters were found to depend on the iron to rhodium ratio in the catalysts. Their dependences correspond to the change of the catalytic properties of rhodium-iron catalysts with the iron content. A schematic model for the surface structure of the rhodium-iron catalysts is proposed. The Mossbauer spectra of rhodium-iron catalysts with various metal loading supported this model.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call