Comparison of Co with Mn and Fe in LDH-hosted sulfonato-salen catalysts for olefin epoxidation

被引：45

作者：

Bhattacharjee, Samiran ^{[1
]}

Dines, Trevor. J. ^{[2
]}

Anderson, James A. ^{[1
]}

机构：

[1] Univ Aberdeen, Dept Chem, Surface Chem & Catalysis Grp, Aberdeen AB24 3UE, Scotland

[2] Univ Dundee, Div Elect Engn & Phys, Dundee DD1 4HN, Scotland

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2008年 / 112卷 / 36期

关键词：

D O I：

10.1021/jp804339d

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：

Sulphonato-salen complexes containing Mn(III), Co(III), and Fe(III) metal centers intercalated into Zn/Al layered double-hydroxide (LDH) host have been synthesized and tested as catalysts for the epoxidation of cyclohexene and dicyclopentadiene Using pivaldehyde and Molecular oxygen at atmospheric pressure and room temperature. Oxidation of cyclohexene gave cyclohexene oxide and 2-cyclohexen-1-one as reaction products, whereas dicyclopentadiene was transformed to the cot-responding monoepoxide. Selectivity was found to depend on the central metal ion. Activity (TOF) increased according to LDH-[Fe(Cl)(salen)] < LDH-[Co(Cl)(salen)] < LDH-[Mn(Cl)(salen)] in both case of cyclohexene and dicyclopentadiene epoxidation. The structures of the metal(III) sulfonato-salen complexes were modeled by density functional theory calculations in order to compare differences in dimensions and geometries with differences in gallery height and catalytic behavior.

引用

页码：14124 / 14130

页数：7

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