Abstract: Furan-2,5-dicarboxylic acid was synthesized from furoic acid through esterification,chloromethylation,hydration and oxidation,and the important process parameters in each step were also optimized.The optimal reaction conditions were obtained as follows:the time of esterification was 10 hours,the temperature of chloromethylation was 35~40 ℃ n(sodium hydroxide)∶n(methyl 5-chloromethyl-furan-2-carboxylate)=2.1∶1 in hydration,pH=7~8 in oxidation,the total yield was 47.5%.Under the optimized conditions,the synthetic method of furan-2,5-dicarboxylic acid was successfully carried out three times in 20 L reactor and the average yield could reach 47.3%,and the purity of the product was over 99.4%.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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