Lignin aerobic oxidation promoted by molybdovanadophosphate polyanion [PMo7V5O40](8-). Study on the oxidative cleavage of beta-O-4 aryl ether structures using model compounds
authors Evtuguin, DV; Daniel, AID; Silvestre, AJD; Amado, FML; Neto, CP
journal JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
author keywords heteropolyanion; lignin; lignin model compound; oxidation catalysis; oxygen
keywords ENVIRONMENTALLY BENIGN TECHNOLOGY; OXYGEN DELIGNIFICATION; KRAFT PULP; PEROXIDASE; MECHANISM; CATALYSIS; MEDIA
abstract The lignin oxidative degradation in the reaction system [PMo7V5O40](8-)/O-2 has been studied using guaiacyl and syringyl beta-aryl ether dimeric lignin model compounds. The oxidation has been monitored by GC/MS and ESI/MS. Although the free phenolic and non-phenolic model compounds were both degraded under aerobic oxidation with [PMo7V5O40](8-), the reaction mechanisms involved are different. Oxidation routes leading to the cleavage of beta-O-4 bonds have been proposed. (C) 2000 Elsevier Science B.V. All rights reserved.
publisher ELSEVIER SCIENCE BV
issn 1381-1169
year published 2000
volume 154
issue 01-fev
beginning page 217
ending page 224
digital object identifier (doi) 10.1016/S1381-1169(99)00383-0
web of science category Chemistry, Physical
subject category Chemistry
unique article identifier WOS:000086257200024

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