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

页码：247 / 254

页数：8

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