Mössbauer study of nanodimensional nickel ferrite-mechanochemical synthesis and catalytic properties

Elina Manova , Claude Estournès (1) , Daniela Paneva , Jean Luc Rehspringer (2) , Tanya Tsoncheva (3) , Boris Kunev , Ivan Mitov

1 CIRIMAT - Centre interuniversitaire de recherche et d'ingenierie des matériaux
2 IPCMS - Institut de Physique et Chimie des Matériaux de Strasbourg
3 Institute of Organic Chemistry with Centre of Phytochemistry - IOCCP (Sofia, Bulgaria)

Iron-nickel spinel oxide NiFe2O4 nanoparticles have been prepared by the combination of chemical precipitation and subsequent mechanical milling. For comparison, their analogue obtained by thermal synthesis is also studied. Phase composition and structural properties of iron-nickel oxides are investigated by X-ray diffraction and Mössbauer spectroscopy. Their catalytic behavior in methanol decomposition to CO and methane is tested. An influence of the preparation method on the reduction and catalytic properties of iron-nickel samples is established.

Mots clés: X-ray diffraction; Mössbauer spectroscopy; mechanochemical synthesis; methanol decomposition; ferrite nanoparticle

Domaines: Matériaux

Elina Manova, Claude Estournès, Daniela Paneva, Jean Luc Rehspringer, Tanya Tsoncheva, et al.. Mössbauer study of nanodimensional nickel ferrite-mechanochemical synthesis and catalytic properties. Hyperfine Interactions, 2005, 165 (1-4), pp.215-220. ⟨10.1007/s10751-006-9268-7⟩. ⟨hal-03601135⟩