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Method for preparing furan-2,5-dicarboxylicacid from 5-hydroxymethylfurfural through electrochemical oxidation

A technology of furandicarboxylic acid and hydroxymethylfurfural, which is applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of low current density, reaction selectivity and efficiency limitation, and achieve current High efficiency, reduced oxygen evolution reaction and catalyst deactivation effect, and improved current efficiency

Active Publication Date: 2019-08-09
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current density of photoelectrochemical conversion is low, and the reaction selectivity and efficiency limit its application.

Method used

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  • Method for preparing furan-2,5-dicarboxylicacid from 5-hydroxymethylfurfural through electrochemical oxidation
  • Method for preparing furan-2,5-dicarboxylicacid from 5-hydroxymethylfurfural through electrochemical oxidation
  • Method for preparing furan-2,5-dicarboxylicacid from 5-hydroxymethylfurfural through electrochemical oxidation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Example 1: Preparation of reduced catalyst and working electrode

[0057] Weigh 0.2000g of activated carbon, 0.2310g of copper nitrate trihydrate and 0.0930g of nickel nitrate hexahydrate, add them into 200mL of ultrapure water and mix, called solution A, the stirring rate is 1500r / min, and the stirring time is 30min. Weigh 3.3800g of sodium borohydride, dissolve it in 50mL of solution, called solution B, slowly drop solution B into solution A, keep stirring, and the reaction time is 4h. After filtration, it was washed three times with ultrapure water, and the filter cake was transferred to a vacuum drying oven. The drying time was 12 hours, and the obtained solid was ground to obtain a reduced state copper-nickel catalyst supported by activated carbon, which was 5-hydroxymethylfurfural electrocatalyst. The chemical catalyst is called 3CuNi@C (40wt%) catalyst.

[0058] Disperse 20 mg of the synthesized activated carbon-supported reduced copper-nickel catalyst into 1000...

Embodiment 2

[0059] Embodiment 2: Preparation of reduced state catalyst and working electrode

[0060] Weigh 0.2000g of activated carbon, 0.2070g of copper nitrate trihydrate and 0.1246g of nickel nitrate hexahydrate, add them into 200mL of ultrapure water and mix them, called solution A, the stirring rate is 1500r / min, and the stirring time is 30min. Weigh 3.4041g of sodium borohydride, dissolve it in 50mL of solution, called solution B, slowly add solution B to solution A, keep stirring, and the reaction time is 4h. After filtration, it was washed three times with ultrapure water, and the filter cake was transferred to a vacuum drying oven. The drying time was 12 hours, and the obtained solid was ground to obtain a reduced state copper-nickel catalyst supported by activated carbon, which was 5-hydroxymethylfurfural electrocatalyst. The chemical catalyst is called 2CuNi@C (40wt%) catalyst.

[0061] The working electrode was prepared according to the method shown in Example 1.

Embodiment 3

[0062] Embodiment 3: Preparation of reduced state catalyst and working electrode

[0063] Weigh 0.2000g of activated carbon, 0.1575g of copper nitrate trihydrate and 0.1896g of nickel nitrate hexahydrate, add them into 200mL of ultrapure water and mix them, called solution A, the stirring rate is 1500r / min, and the stirring time is 30min. Weigh 3.4531g of sodium borohydride, dissolve it in 50mL of solution, called solution B, slowly drop solution B into solution A, keep stirring, and the reaction time is 4h. After filtration, it was washed three times with ultrapure water, and the filter cake was transferred to a vacuum drying oven. The drying time was 12 hours, and the obtained solid was ground to obtain a reduced state copper-nickel catalyst supported by activated carbon, which was 5-hydroxymethylfurfural electrocatalyst. The chemical catalyst is called CuNi@C (40wt%) catalyst. The XPS curve figure of the CuNi@C (40wt%) catalyst prepared in this embodiment is as follows fi...

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Abstract

The invention relates to a method for furan-2,5-dicarboxylicacid from 5-hydroxymethylfurfural through electrochemical oxidation. The method includes the following steps that an H-type double-electrochemical-cell reactor is adopted and divided into a cathode chamber and an anode chamber through a proton exchange membrane for separation; a three-electrode system is adopted, a catalyst supported electrode serves as a working electrode, a platinum electrode serves as an auxiliary electrode, and a silver / silver chloride electrode serves as a reference electrode. The working electrode includes a working electrode body and a 5-hydroxymethylfurfural electrochemical oxidation catalyst supported on the working electrode body, wherein the 5-hydroxymethylfurfural electrochemical oxidation catalyst isthe activated carbon supported oxidized-state or reduced-state copper-nickel bimetallic catalyst. The method can improve the yield and Faradic efficiency of the product, namely, furan-2,5-dicarboxylicacid.

Description

technical field [0001] The invention relates to electrochemical oxidation technology, in particular to a method for preparing 2,5-furandicarboxylic acid by electrochemical oxidation of 5-hydroxymethylfurfural. Background technique [0002] Biomass resources are rich in sources, low in price, environmentally friendly and renewable, and are ideal substitutes for fossil resources. 5-Hydroxymethylfurfural (5-HMF) and 2,5-furandicarboxylic acid (2,5-FDCA) are typical biomass platform compounds, and 2,5-furandicarboxylic acid is the Oxidation products are important intermediates in the production of fine chemicals, polymers, and pharmaceuticals. [0003] Catalytic conversion of 5-hydroxymethylfurfural is one of the effective measures to prepare high value-added compound 2,5-furandicarboxylic acid. Mainly through thermochemical conversion, electrochemical conversion, photoelectrochemical conversion. For example, the Chinese patent document whose publication number is CN105037303...

Claims

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Application Information

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IPC IPC(8): C25B3/02C25B11/06B01J23/755C25B3/23
CPCB01J23/755B01J23/002C25B3/23C25B11/051C25B11/057C25B11/091
Inventor 傅杰王嘉团陈皓吕秀阳欧阳平凯
Owner ZHEJIANG UNIV
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