AI Article Synopsis
- The study focused on producing carboxylic acids by partially oxidizing alkali lignin using phosphotungstic and phosphomolybdic acids as catalysts under high temperatures and pressures.
- Key factors affecting the yield of carboxylic acids were examined, with formic, acetic, and succinic acids being the main products identified.
- Phosphomolybdic acid proved to be more effective, achieving carboxylic acid yields of up to 45% and lignin conversions of 95%.
Article Abstract
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 (H₃PWO) and phosphomolybdic acid (H₃PMoO), 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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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6151388 | PMC |
| http://dx.doi.org/10.3390/molecules22101625 | DOI Listing |
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