ANISOTROPIC STRUCTURE-ANALYSIS FOR COBALT OXIDES ON ALPHA-AL2O3 (0001) BY POLARIZED TOTAL-REFLECTION FLUORESCENCE EXTENDED X-RAY ABSORPTION FINE-STRUCTURE

被引：26
|
作者：
SHIRAI, M [1 ]
ASAKURA, K [1 ]
IWASAWA, Y [1 ]
机构：
[1] UNIV TOKYO,FAC SCI,DEPT CHEM,7-3-1 HONGO,BUNKYO KU,TOKYO 113,JAPAN
来源：
CATALYSIS LETTERS | 1992年 / 15卷 / 03期
关键词：
POLARIZED TOTAL-REFLECTION FLUORESCENCE EXAFS; COBALT OXIDES ON ALPHA-AL2O3 (0001); ANISOTROPIC STRUCTURE ANALYSIS; OXIDATION CATALYST MODEL;
D O I：
10.1007/BF00765268
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：
Anisotropic structure analyses for [CoO(x)]/alpha-Al2O3 (0001) and [Co3O4]n/alpha-Al2O3 (0001) which were derived from Co2(CO)8/alpha-Al2O3 (0001) were performed by a polarized total-reflection fluorescence extended X-ray absorption fine structure (EXAFS) technique. Both s- and p-polarized EXAFS data revealed that the cobalt atoms of [CoO(x)] were located on three-fold hollow sites of alpha-Al2O3 (0001) in a monomer form and that a thin spinel structure [Co3O4] grew with the (001) plane parallel to alpha-Al2O3 (0001).
引用
收藏
页码：247 / 254
页数：8
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