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Unprecedented oxidative properties of mesoporous silica materials: Towards microwave-assisted oxidation of lignin model compounds

Paper ID Volume ID Publish Year Pages File Format Full-Text
50452 46795 2013 4 PDF Available
Title
Unprecedented oxidative properties of mesoporous silica materials: Towards microwave-assisted oxidation of lignin model compounds
Abstract

The unusual oxidative ability of mesoporous silicas towards oxidation of an important lignin model molecule, 1,2-(4-hydroxy-3methoxy-phenoxy) ethanol, apocynol under microwave irradiation is presented in this work. Mesoporous MCM-41, HMS, SBA-15 and amorphous silica were employed as catalysts in the present study. Different reactivities were obtained for the various silica materials. It was assumed that the substrate conversion and product selectivity were highly influenced by the nature of mesoporous silica materials. Based on the nature of the catalysts and reaction product profile, a plausible mechanism has been proposed.

► Silicas have activities in the microwave assisted oxidation of apocynol. ► Active materials with activities varying on the distribution of silanol groups ► Microwaves can speed up rates of reaction to selective oxidation products.

Keywords
Mesoporous silica; Microwaves; Apocynol; Lignin degradation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 31, 10 January 2013, Pages 1–4
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
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