XAS STUDY OF TRANSITION-METAL IONS IN HYDROTALCITE-LIKE COMPOUNDS

被引:10
|
作者
MALET, P
ODRIOZOLA, JA
LABAJOS, FM
RIVES, V
ULIBARRI, MA
机构
[1] UNIV SALAMANCA,DEPT QUIM INORGAN,SALAMANCA,SPAIN
[2] UNIV CORDOBA,DEPT QUIM INORGAN & INGN QUIM,CORDOBA,SPAIN
关键词
D O I
10.1016/0168-583X(95)00376-2
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
EXAFS and XANES studies have been performed on hydrotalcite-like materials containing vanadium species in the layers, as V3+ cations, or in the interlayer space as vanadate anions. It has been found that in the former sample V3+ isomorphically substitutes Mg2+ in the octahedral sites, while in the second case anions in the interlayer are as decavanadate clusters. Amorphous decomposition products obtained after calcination of the V3+ hydrotalcite contain V5+ cations as isolated VOa3- units.
引用
收藏
页码:16 / 19
页数:4
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