Aerobic oxidation of cis-cyclooctene by iron-substituted polyoxotungstates:: Evidence for a metal initiated auto-oxidation mechanism

被引：33

作者：

Bonchio, Marcella

Carraro, Mauro

Farinazzo, Anna

Sartorel, Andrea

Scorrano, Gianfranco

Kortz, Ulrich

机构：

[1] Univ Padua, ITM, CNR, Dept Chem Sci, I-35131 Padua, Italy

[2] Int Univ Bremen, Sch Sci & Engn, D-28725 Bremen, Germany

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2007年 / 262卷 / 1-2期

关键词：

polyoxometalates; aerobic epoxidation; iron; catalytic oxidation; oxygen;

D O I：

10.1016/j.molcata.2006.08.057

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：

Catalytic aerobic epoxidation is a key process for new sustainable systems in the field of hydrocarbon functionalization. The screening of selected Fe-POM catalysts for the aerobic epoxidation has been performed using cis-cyclooctene as model substrate. Our results support a ubiquitous radical chain epoxidation with selectivity up to 66%, TOF in the range 4-50 h(-1) and total turnover number > 7000. FT-IR spectroscopy has been used to assess the stability of the various POM-based catalysts with respect to analogue organic porphyrine ligands. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：36 / 40

页数：5

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