A1 Journal article (refereed), original research

Valorization of Lignin by Partial Wet Oxidation Using Sustainable Heteropoly Acid Catalysts

Open Access publication

Publication Details
Authors: Demesa Abayneh Getachew, Laari Arto, Sillanpää Mika, Koiranen Tuomas
Publisher: MDPI
Publication year: 2017
Language: English
Volume number: 22
Issue number: 10
ISSN: 1420-3049
JUFO-Level of this publication: 1
Permanent website address: http://www.mdpi.com/journal/molecules
Open Access: Open Access publication


The production of carboxylic acids by partial wet oxidation of alkali lignin at elevated temperatures and pressures was studied experimentally. Two different heteropoly acids, phosphotungstic acid (H3PW12O40) and phosphomolybdic acid (H3PMo12O40), were used to catalyze the oxidation of lignin under hydrothermal conditions. Factors influencing the total yield of carboxylic acids formed during the partial oxidation of lignin were investigated. Formic, acetic and succinic acids were the major products identified. Of the two catalysts used, phosphomolybdic acid gave the most promising results, with carboxylic acid yields and lignin conversions of up to 45% and 95%, respectively.

Last updated on 2018-19-10 at 07:55