Structural Study of X-Ray Amorphous Fe-Zr-O Materials
, E-ISSN: 1608-3172
Boreskov Institute of Catalysis, Siberian Division, Russian Academy of Sciences, pr. akademika Lavrent' eva 5, Novosibirsk, 630090 Russia
Radial-distribution-function analysis was used to study the structure of x-ray amorphous Fe-Zr-O materials prepared by heat treatment between 383 and 673 K. The chemical and structural formulas of the materials were established. The results demonstrate that the introduction of Fe3+ into ZrO2 favors the formation of vacancies and reduces interatomic distances in comparison with cubic ZrO2. The materials contain OH- groups, whose concentration decreases with increasing heat-treatment temperature.