SPECIATION IN COBALT(III)-CATALYZED AUTOXIDATION - STUDIES USING THIN-LAYER CHROMATOGRAPHY

被引：12

作者：

CHIPPERFIELD, JR

LAU, S

WEBSTER, DE

机构：

[1] Department of Chemistry, The University, Hull

来源：

JOURNAL OF MOLECULAR CATALYSIS | 1992年 / 75卷 / 02期

关键词：

D O I：

10.1016/0304-5102(92)80113-U

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：

Thin-layer chromatography has been used to study the speciation of cobalt in the cobalt-catalysed autoxidation of benzaldehyde in acetic acid. The cobalt may be present as cobalt(II), a mixed-valency oxo-centred trimer, a cobalt(III) oxo-centred trimer, or as a hydroxo-bridged cobalt(III) dimer. During reaction the relative proportions of these species change, and the dimer is only present when reaction rate is at a maximum. At this time cobalt(II) and the mixed-valency trimer are absent.

引用

页码：123 / 128

页数：6

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