The conversion of cellulose into carboxylic acids by a drastic oxygen-alkali treatment

Add time:07/22/2019    Source:sciencedirect.com

Cotton cellulose was treated with 1 and 3 m sodium hydroxide at 170–190°C under oxygen pressure of 200 and 400 kPa. About 60–70% of the cellulose was converted into low molecular weight carboxylic acids, which were analysed by capillary gas-liquid chromatography-mass spectrometry. In all 60 acids were identified, of which formic, glycolic, lactic, oxalic, 2,3,4-trideoxyhexaric and 3,4-dideoxyhexaric acids were the main compounds. Several C7−C10 hydroxy dicarboxylic acids were also detected, but these remained mainly unidentified.

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