A new route to γ-Fe2O3 via an intermediate oxyhydroxide.: The reaction of α-NaFeO2 with benzoic acid

被引：10

作者：

Blesa, MC

Morán, E ^{[1
]}

Tornero, JD

Menéndez, N

Mata-Zamora, E

Saníger, JM

机构：

[1] Univ Complutense, Fac Ciencias Quim, Dept Quim Inorgan, E-28040 Madrid, Spain

[2] Univ Autonoma Cantoblanco, Fac Ciencias, Dept Quim Fis Aplicada, Madrid 28049, Spain

[3] Univ Nacl Autonoma Mexico, Ctr Instrumentos, Mexico City 04510, DF, Mexico

来源：

JOURNAL OF MATERIALS CHEMISTRY | 1999年 / 9卷 / 01期

关键词：

D O I：

10.1039/a805540h

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Proton exchange reactions have been performed on alpha-NaFeO2 at 150 degrees C in molten benzoic acid; a ferrimagnetic material showing the spinel structure was produced. Infrared spectroscopy was used to investigate the oxyhydroxide character of this product which, after thermal treatment at 300 degrees C yields the well known maghemite gamma-Fe2O3, although some hydroxyl groups still seem to be present. Besides IR, X-ray diffraction, chemical and thermal analysis, Mossbauer spectroscopy and magnetization measurements are presented and discussed.

引用

页码：227 / 231

页数：5

共 28 条

[21]

PREUDHOME J, 1974, SEMM CHIM ETAT SOL, P31

[22]

RAVEAU B, 1988, REV SOLID STATE SCI, V1, P515

[23] A PROFILE REFINEMENT METHOD FOR NUCLEAR AND MAGNETIC STRUCTURES [J].