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

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 (H(3)PW(12)O(40)) and phosphomolybdic acid (H(3)PMo(12)O(40)), were used to catalyze the oxidation of l...

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Autores principales: Demesa, Abayneh Getachew, Laari, Arto, Sillanpää, Mika, Koiranen, Tuomas
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6151388/
https://www.ncbi.nlm.nih.gov/pubmed/28956838
http://dx.doi.org/10.3390/molecules22101625
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author Demesa, Abayneh Getachew
Laari, Arto
Sillanpää, Mika
Koiranen, Tuomas
author_facet Demesa, Abayneh Getachew
Laari, Arto
Sillanpää, Mika
Koiranen, Tuomas
author_sort Demesa, Abayneh Getachew
collection PubMed
description 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 (H(3)PW(12)O(40)) and phosphomolybdic acid (H(3)PMo(12)O(40)), 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.
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spelling pubmed-61513882018-11-13 Valorization of Lignin by Partial Wet Oxidation Using Sustainable Heteropoly Acid Catalysts Demesa, Abayneh Getachew Laari, Arto Sillanpää, Mika Koiranen, Tuomas Molecules Article 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 (H(3)PW(12)O(40)) and phosphomolybdic acid (H(3)PMo(12)O(40)), 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. MDPI 2017-09-28 /pmc/articles/PMC6151388/ /pubmed/28956838 http://dx.doi.org/10.3390/molecules22101625 Text en © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Demesa, Abayneh Getachew
Laari, Arto
Sillanpää, Mika
Koiranen, Tuomas
Valorization of Lignin by Partial Wet Oxidation Using Sustainable Heteropoly Acid Catalysts
title Valorization of Lignin by Partial Wet Oxidation Using Sustainable Heteropoly Acid Catalysts
title_full Valorization of Lignin by Partial Wet Oxidation Using Sustainable Heteropoly Acid Catalysts
title_fullStr Valorization of Lignin by Partial Wet Oxidation Using Sustainable Heteropoly Acid Catalysts
title_full_unstemmed Valorization of Lignin by Partial Wet Oxidation Using Sustainable Heteropoly Acid Catalysts
title_short Valorization of Lignin by Partial Wet Oxidation Using Sustainable Heteropoly Acid Catalysts
title_sort valorization of lignin by partial wet oxidation using sustainable heteropoly acid catalysts
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6151388/
https://www.ncbi.nlm.nih.gov/pubmed/28956838
http://dx.doi.org/10.3390/molecules22101625
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AT laariarto valorizationofligninbypartialwetoxidationusingsustainableheteropolyacidcatalysts
AT sillanpaamika valorizationofligninbypartialwetoxidationusingsustainableheteropolyacidcatalysts
AT koiranentuomas valorizationofligninbypartialwetoxidationusingsustainableheteropolyacidcatalysts

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