Cobalt substitution in ETS-10

被引:31
作者
Eldewik, A [1 ]
Howe, RF [1 ]
机构
[1] Univ New S Wales, Sch Chem, Sydney, NSW 2052, Australia
基金
澳大利亚研究理事会;
关键词
ETS-10 cobalt substitution; EXAFS; EPR;
D O I
10.1016/S1387-1811(01)00331-6
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
The preparation and characterization of a cobalt substituted ETS-10 titanosilicate are described. X-ray diffraction shows that cobalt incorporation causes an increase in unit cell dimensions. UV-VIS, EPR, Raman and Co K-edge C XANES spectra all show that Co2+ occupies tetrahedral sites, substituting for silicon. The Si-29 NMR spectra do not permit identification of which silicon sites in ETS-10 are substituted, but the Co K-edge EXAFS shows clearly that Co2+ substitutes at Si(3Si,1Ti) sites. (C) 2001 Elsevier Science BN. All rights reserved.
引用
收藏
页码:65 / 71
页数:7
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