Characterization of manganese-gallium mixed oxide powders

被引:12
作者
Escribano, VS
López, EF
Huidobro, PS
Panizza, M
Resini, C
Gallardo-Amores, JM
Busca, G
机构
[1] Univ Salamanca, Dept Quim Inorgan, E-37008 Salamanca, Spain
[2] Univ Genoa, Dipartimento Ingn Chim & Proc, I-16129 Genoa, Italy
[3] Univ Complutense, Lab Complutense Atlas Presiones, Dept Quim Inorgan, E-28040 Madrid, Spain
关键词
XRD; FT-IR; DR-UV-V; Mn-Ga; mixed oxides;
D O I
10.1016/j.solidstatesciences.2003.09.005
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Mn-Ga mixed oxides have been prepared by coprecipitation of the corresponding oxo-hydroxides as powders and have been characterized in relation to their structural and optical properties. The materials have been characterized by XRD, TG-DTA, skeletal IR and UV-visibleNIR spectroscopies. Large solubility of Mn in the diaspore type alpha-GaOOH oxo-hydroxide has been found. The spinel related structures of hausmannite Mn3O4 and of beta-gallia present large reciprocal solubilities at least in a metastable form. At high temperature also bixbyite-type alpha-Mn2O3 solid solutions containing up to 20% at. Ga have been observed. (C) 2003 Elsevier SAS. All rights reserved.
引用
收藏
页码:1481 / 1489
页数:9
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