Method for preparing 2, 5-furandicarboxylic acid (FDCA) by using sodium hypochlorite to perform electro-catalysis on 5-hydroxymethylfurfural (5-HMF)

A technology of 5-HMF and sodium hypochlorite, which is applied in the direction of electrolysis process, electrolysis components, electrolysis organic production, etc., can solve problems such as hindering industrial production, expensive precious metal catalysts, and easy deactivation, so as to promote industrial production, simplify the reaction process, improve conversion rate effect

Inactive Publication Date: 2018-06-08
TIANJIN POLYTECHNIC UNIV
4 Cites 13 Cited by

AI-Extracted Technical Summary

Problems solved by technology

These methods have disadvantages such as high cost of oxidant and catalyst and easy deactivation.
In recent years, there have also been reports of using hydrogen peroxide or oxygen as an oxidant, and non-precious metal iron and copper as a catalyst, which reduces the reaction cost, but the product yield is not ideal, and most of the reaction conditions are high temp...
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Abstract

The invention discloses a method for preparing 2, 5-furandicarboxylic acid (FDCA) by using sodium hypochlorite to perform electro-catalysis on 5-hydroxymethylfurfural (5-HMF). The method is characterized by comprising the following steps: evenly mixing the 5-HMF, the sodium hypochlorite and an alkaline solution at the room temperature to obtain a mixed solution, and mixing the mixed solution intoan anode electrolytic cell; adding an alkaline solution into a cathode electrolytic cell, wherein the volume of the added alkaline solution is equal to that of the mixed solution, and the molar concentration of the added alkaline solution is equal to that of solute of the alkaline solution in the mixed solution; taking an anode material as an anode electrode, and carrying out a reaction for 1-12hunder the condition that the potential is 1.0-2.0V so as to obtain the FDCA. The method first uses the sodium hypochlorite and electrolyzed effective chlorine component thereof as an oxidizing agent,takes cheap metals and metal compounds as the anode electrode, replaces the traditional precious metal-based electrode material catalyst with an oxidation reaction catalyst, and replaces the traditional high temperature and high pressure thermal catalytic reaction with a mild electrooxidation reaction at room temperature and atmospheric pressure, so that the cost is greatly lowered, the reaction process is simplified, the energy is saved, the conversion rate of the 5-HMF is further increased, the yield and selectivity of the FDCA are approached, and the industrial production of the FDCA is promoted.

Application Domain

Electrolysis componentsElectrolytic organic production

Technology Topic

Calcium hypochloriteMolar concentration +13

Examples

  • Experimental program(16)

Example Embodiment

[0015] Example 1
[0016] Stir the solution of 5-HMF, sodium hypochlorite and sodium hydroxide uniformly at room temperature to obtain a solution with a molar concentration of sodium hydroxide of 0.5M, which is mixed into the anode electrolytic cell; wherein the molar ratio of 5-HMF to sodium hypochlorite is 1:2; Take the sodium hydroxide solution of equal molar concentration and equal volume into the cathode electrolytic cell; choose Cu@CuS as the anode electrode, Ag/AgCl as the reference electrode, platinum wire as the auxiliary electrode, and react for 12h at a potential of 1.0V to obtain FDCA. After testing, the conversion rate of 5-HMF reached 100%, the yield of FDCA reached 95%, and the selectivity reached 99%.

Example Embodiment

[0017] Example 2
[0018] Stir the solution of 5-HMF, sodium hypochlorite and sodium hydroxide uniformly at room temperature to obtain a solution with a molar concentration of sodium hydroxide of 0.5M, which is mixed into the anode electrolytic cell; wherein the molar ratio of 5-HMF to sodium hypochlorite is 1:2; Take the sodium hydroxide solution of equal molar concentration and equal volume into the cathode electrolytic cell; choose Cu@CuS as the anode electrode, Ag/AgCl as the reference electrode, platinum wire as the auxiliary electrode, and react for 8h at a potential of 1.5V to obtain FDCA. After testing, the conversion rate of 5-HMF reached 100%, the yield of FDCA reached 98%, and the selectivity reached 99%.

Example Embodiment

[0019] Example 3
[0020] Stir the solution of 5-HMF, sodium hypochlorite and sodium hydroxide uniformly at room temperature to obtain a solution with a molar concentration of sodium hydroxide of 0.5M, which is mixed into the anode electrolytic cell; wherein the molar ratio of 5-HMF to sodium hypochlorite is 1:2; Take the sodium hydroxide solution of equal molar concentration and equal volume and add it to the cathode electrolytic cell; choose Cu@CuO as the anode electrode, Ag/AgCl as the reference electrode, platinum wire as the auxiliary electrode, and react for 10h under the potential of 1.0V to obtain FDCA. After testing, the conversion rate of 5-HMF reached 100%, the yield of FDCA reached 96%, and the selectivity reached 99%.

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Description & Claims & Application Information

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