Preparation method for 4-hydroxymethyl furoic acid and 2,4-furan diformic acid
2012
The invention discloses a preparation method for 4-hydroxymethyl furoic acid and 2,4-furan diformic acid. The method comprises the following steps: dissolving 4-hydroxymethyl furfural (4-HMF) serving as a raw material into alkaline solution with the molar equivalence of 0 to 8; introducing gas oxidant under normal pressure and under the action of different metal catalysts, wherein the flow velocity of the oxidant is 10 to 100 ml/min; reacting at the temperature of 0 to 80 DEG C for 1 to 24 h; and adjusting the solution by using strong acid after the reaction until the pH value is less than 3. The method has the advantages that the process is simple; the product is convenient to separate; the 4-hydroxymethyl furoic acid or the 2,4-furan diformic acid can be selectively obtained by regulating and controlling the catalysts and the reaction condition; and industrialized potential is achieved.
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