Biomimetic catalysts such as metalloporphyrins, which can yield highly oxidized metallo-oxo species, have been used as lignin peroxidase models. However, natural porphyrins are unstable under catalytic oxidation conditions due to their self-destruction or to the formation of inactive μ-oxo complexes. An alternative approach to the preparation of robust catalysts consists in the immobilization of metalloporphyrins on supports that mimic the polypeptide envelope, which protects the catalytic center of natural enzymes. We report here the use of manganese meso-tetrakis(tetramethylpyridinio) porphyrin pentaacetate immobilized on the smectite clay montmorillonite as a suprabiotic catalyst for the oxidation of lignin model compounds. © 2003 Elsevier B.V. All rights reserved.

Crestini, C., Pastorini, A., Tagliatesta, P. (2004). Metalloporphyrins immobilized on motmorillonite as biomimetic catalysts in the oxidation of lignin model compounds. JOURNAL OF MOLECULAR CATALYSIS. A: CHEMICAL, 208, 195-202 [10.1016/j.molcata.2003.07.015].

Metalloporphyrins immobilized on motmorillonite as biomimetic catalysts in the oxidation of lignin model compounds

CRESTINI, CLAUDIA;TAGLIATESTA, PIETRO
2004-01-01

Abstract

Biomimetic catalysts such as metalloporphyrins, which can yield highly oxidized metallo-oxo species, have been used as lignin peroxidase models. However, natural porphyrins are unstable under catalytic oxidation conditions due to their self-destruction or to the formation of inactive μ-oxo complexes. An alternative approach to the preparation of robust catalysts consists in the immobilization of metalloporphyrins on supports that mimic the polypeptide envelope, which protects the catalytic center of natural enzymes. We report here the use of manganese meso-tetrakis(tetramethylpyridinio) porphyrin pentaacetate immobilized on the smectite clay montmorillonite as a suprabiotic catalyst for the oxidation of lignin model compounds. © 2003 Elsevier B.V. All rights reserved.
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore CHIM/03 - Chimica Generale e Inorganica
English
Con Impact Factor ISI
Biomimetic materials; Enzymes; Lignin; Oxidation; Polypeptides; Catalytic oxidation; Catalyst activity; biomimetic material; lignin peroxidase; manganese meso tetrakis(tetramethylpyridinio)porphyrin; metalloporphyrin; methyl group; montmorillonite; polypeptide; pyridine derivative; silicon dioxide; unclassified drug; article; biosynthesis; catalysis; catalyst; clay; enzyme degradation; immobilization; molecular dynamics; molecular interaction; molecular mechanics; molecular model; oxidation; reaction analysis; species comparison; technique; thermostability
Crestini, C., Pastorini, A., Tagliatesta, P. (2004). Metalloporphyrins immobilized on motmorillonite as biomimetic catalysts in the oxidation of lignin model compounds. JOURNAL OF MOLECULAR CATALYSIS. A: CHEMICAL, 208, 195-202 [10.1016/j.molcata.2003.07.015].
Crestini, C; Pastorini, A; Tagliatesta, P
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/32301
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