Article ID Journal Published Year Pages File Type
59303 Chinese Journal of Catalysis 2011 4 Pages PDF
Abstract

A synthetic metalloporphine was immobilized onto a PVA-based and mercapto-grafted solid support, emulating the active site of cytochrome P450. Its ligninolytic peroxidase-like catalytic activity was studied. The coordinated mercapto ligand significantly affected the catalytic features of the catalyst because the oxidation of lignin-model compounds was very slow by comparison with imidazole- and pyridine-coordinated immobilized metalloporphines. Conversely, the catalyst efficiently bleached several industrial dyes and thus demon-strated promising activity for this application. Based on this altered substrate specificity the oxygen-donor catalytic route seems to be more favorable than a single electron oxidation pathway.

Graphical abstractFeTFPP was immobilized onto a solid support using a mercapto group as the ligand. The catalytic performance of the adduct was studied and we demonstrate that the presence of the -SH ligand dramatically changes its catalytic behavior.Figure optionsDownload full-size imageDownload as PowerPoint slide

Related Topics
Physical Sciences and Engineering Chemical Engineering Catalysis
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