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Method for preparing 2,5-furandicarboxylic acid from biomass compound by electrocatalytic oxidation

A technology of furandicarboxylic acid and compound electricity, which is applied in the direction of electrodes, electrolysis process, electrolysis components, etc., can solve the problems of complex production process, environmental pollution, high catalyst cost, etc., and achieve high conversion rate of raw materials, easy availability of raw materials, and product yield high effect

Active Publication Date: 2018-09-14
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide an electrocatalytic oxidation of furan substitutes to prepare 2,5-furan in order to overcome the problems of high cost of raw materials and catalysts, complex production process, and serious environmental pollution in the existing FDCA synthesis process. The method of diformic acid (FDCA) is environmentally friendly, the production process is simple, the catalyst cost is low, and the reaction efficiency is high

Method used

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  • Method for preparing 2,5-furandicarboxylic acid from biomass compound by electrocatalytic oxidation
  • Method for preparing 2,5-furandicarboxylic acid from biomass compound by electrocatalytic oxidation
  • Method for preparing 2,5-furandicarboxylic acid from biomass compound by electrocatalytic oxidation

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Experimental program
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Effect test

Embodiment 1

[0051] The preparation of the three-dimensional porous vanadium oxyhydroxide catalyst VOOH / NF supported on the nickel foam is as follows:

[0052] (1) Dissolve 234 mg of ammonium metavanadate in 40 mL of water, add foamed nickel for impregnation, and stir at room temperature for 10 minutes. The mass of the catalyst active component vanadium oxyhydroxide is calculated as 5% of the mass of the carrier foamed nickel. The added partial The amount of substance of ammonium vanadate is 2 mmol;

[0053] (2) Prepare a hydrochloric acid solution with a concentration of 1mol / L, and prepare an 8mol / L aqueous solution of hydrazine hydrate for later use;

[0054] (3) Take 1 mL of the hydrochloric acid solution obtained in step (2) and slowly add it dropwise to the solution obtained in step (1). After stirring at room temperature for 20 minutes, slowly add 2 mL of the reducing agent solution obtained in step (2), and continue stirring at room temperature for 30 minutes;

[0055] (4) Add the...

Embodiment 2

[0059] Supported on copper foam to form a three-dimensional porous vanadium nitride catalyst (VN x / CF) were prepared as follows:

[0060] (1) Dissolve 488 mg of sodium metavanadate in 40 mL of water, add foamed copper for impregnation, and stir at room temperature for 10 minutes. The mass of the catalyst active component vanadium nitride is calculated as 10% of the mass of the carrier foamed copper. The added partial The amount of substance of sodium vanadate is 4 mmol;

[0061] (2) Prepare a sulfuric acid solution with a concentration of 1mol / L, and prepare a 5mol / L sodium borohydride aqueous solution for later use;

[0062] (3) Take 2 mL of the sulfuric acid solution obtained in step (2) and slowly add it dropwise to the solution obtained in step (1). After stirring at room temperature for 20 minutes, slowly add 3 mL of the reducing agent solution obtained in step (2), and continue stirring at room temperature for 30 minutes;

[0063] (4) Add the precursor solution in ste...

Embodiment 3

[0067] Supported on aluminum foam to form a three-dimensional porous vanadium oxide catalyst (VO x / AF) were prepared as follows:

[0068] (1) Dissolve 1.10 g of sodium orthovanadate in 40 mL of water, add foamed aluminum for impregnation, and stir at room temperature for 10 minutes. The mass of vanadium oxide, the active component of the catalyst, is calculated as 15% of the mass of the carrier aluminum foam. The added vanadium The amount of substance of sodium nitrate is 6mmol;

[0069] (2) Prepare a nitric acid solution with a concentration of 1mol / L and a 6mol / L potassium borohydride aqueous solution for later use;

[0070] (3) Take 3 mL of the sulfuric acid solution obtained in step (2) and slowly add it dropwise to the solution obtained in step (1). After stirring at room temperature for 20 minutes, slowly add 5 mL of the reducing agent solution obtained in step (2), and continue stirring at room temperature for 30 minutes;

[0071] (4) Add the precursor solution in st...

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Abstract

The invention relates to a method for preparing 2,5-furandicarboxylic acid from a biomass compound by electrocatalytic oxidation. The method comprises the following steps: reacting by using an H-shaped electrolytic cell, in an anode compartment, taking a load type catalyst as a working electrode, and dissolving the biomass compound as a reaction substrate in an alkaline solution to obtain an anodesolution; and in a cathode compartment, carrying out electrocatalytic oxidation reaction by taking a platinum sheet as a counter electrode and taking the alkali solution as a cathode solution for 0.5-5 hours under the conditions that the temperature is 30-90 DEG C, the current is 5-50 mA and the cell voltage is 1-10 V, and after reaction is finished, carrying out aftertreatment to obtain the 2,5-furandicarboxylic acid. The technique is gentle in conditions of an electrocatalytic oxidation reaction process, green and pollution-free, high in conversion rate of the raw material and good in FDCAselectivity. Compared with a noble metal catalyst which is generally used in prior art, a metal vanadium compound catalyst used in the invention is low on cost; and consumption of rare precious metalraw materials is avoided.

Description

technical field [0001] The invention relates to a synthesis method of organic chemical products, in particular to a method for preparing 2,5-furandicarboxylic acid by electrocatalytic oxidation of biomass compounds. Background technique [0002] The molecular structure of 2,5-furandicarboxylic acid (FDCA) contains aromatic rings and is used to synthesize bio-based polymer materials. It is considered to be an ideal substitute for petroleum-based monomer terephthalic acid and can also replace isophthalic acid. , adipic acid, succinic acid, etc. are used in the synthesis of bio-based polymers such as polyester, polyamide, and epoxy resin. Therefore, it has been rated as one of the 12 most potential bio-based platform compounds by the US Department of Energy, and considered a "sleeping giant" by DuPont and DSM. In addition, due to the development of many new uses of FDCA in recent years, the market demand continues to increase. [0003] At present, the heterogeneous catalytic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B3/02C25B11/06C23C18/14C25B3/23
CPCC23C18/14C25B3/23C25B11/075
Inventor 钟兴李随勤王建国
Owner ZHEJIANG UNIV OF TECH
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