Oxidation of lignin-carbohydrate complex from bamboo with hydrogen peroxide catalyzed by Co(salen)

The reactivity of salen complexes toward hydrogen peroxide has been long recognized. Co(salen) was tested as catalyst for the aqueous oxidation of a refractory lignin-carbohydrate complex (LCC) isolated from sweet bamboo (Dendrocalamushamiltonii) in the presence of hydrogen peroxide as oxidant. Co(s...

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Bibliographic Details
Published in:Hemijska industrija 2014, Vol.68 (5), p.541-546
Main Author: Zhou, Xue-Fei
Format: Article
Language:English
Subjects:
Bamboo
Biomimetics
Bleaching
Carbohydrates
Catalysis
catalytic oxidation
Chemical properties
Co(salen)
Composition
Degradation
Hydrogen peroxide
Identification and classification
LCC
Lignin
Observations
Oxidation
Oxidation-reduction reaction
Pulp & paper industry
sweet bamboo (Dendrocalamushamiltonii)
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Summary:The reactivity of salen complexes toward hydrogen peroxide has been long recognized. Co(salen) was tested as catalyst for the aqueous oxidation of a refractory lignin-carbohydrate complex (LCC) isolated from sweet bamboo (Dendrocalamushamiltonii) in the presence of hydrogen peroxide as oxidant. Co(salen) catalyzed the reaction of hydrogen peroxide with LCC. From the spectra analyses, lignin units in LCC were undergoing ring-opening, side chain oxidation, demethoxylation, ?-O-4 cleavage with Co(salen) catalytic oxidation. The degradation was also observed in the carbohydrate of LCC. The investigation on the refractory LCC degradation catalyzed by Co(salen) may be an important aspect for environmentally-oriented biomimetic bleaching in pulp and paper industry. nema
ISSN:0367-598X
2217-7426
DOI:10.2298/HEMIND1308821080Z