XRD and Raman spectroscopy study of Fe solubility in cerium oxide

L. Zhao, S. R. Bishop, J. Hyodo, T. Ishihara, K. Sasaki

研究成果: Contribution to journalArticle査読

12 被引用数 (Scopus)

抄録

The solubility of Fe in CeO2 was investigated for 3-50 mol% Fe. Powders were synthesized by the Pechini method in air. Raman spectroscopy and lattice parameter analysis revealed that the solubility limit of Fe in CeO 2 is less than 3 mol% for the present preparation conditions. The low solubility limit was rationalized in terms of the much smaller ionic radius of Fe versus Ce. As a consequence, an approach to increase the Fe radii size through annealing in reducing conditions (humidified H2 at 1100 °C) was attempted. In this case, the more stable CeFeO3 phase was observed by XRD, thereby indicating difficulty in obtaining Fe doped CeO 2 under reducing conditions, as well.

本文言語英語
ページ(範囲)53-58
ページ数6
ジャーナルECS Transactions
50
40
DOI
出版ステータス出版済み - 12 1 2012

All Science Journal Classification (ASJC) codes

  • 工学(全般)

フィンガープリント

「XRD and Raman spectroscopy study of Fe solubility in cerium oxide」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル