Method for preparing 2, 5-furandicarboxylic acid by electro-catalyzing oxidation of 5-hydroxymethylfurfural and simultaneously electrolyzing water to prepare hydrogen

A technology of hydroxymethylfurfural and electrolyzed water, which is applied in the chemical industry, can solve problems such as difficult to improve energy utilization efficiency and water molecule activation, and achieve the effects of good hydrogen production ability, high selectivity and high tolerance of water decomposition

Active Publication Date: 2021-03-23
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the difficulty in activating water molecules in the liquid-phase thermocatalytic process, it is difficult to improve the energy utilization efficiency of the traditional liquid-solid phase reaction.

Method used

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  • Method for preparing 2, 5-furandicarboxylic acid by electro-catalyzing oxidation of 5-hydroxymethylfurfural and simultaneously electrolyzing water to prepare hydrogen
  • Method for preparing 2, 5-furandicarboxylic acid by electro-catalyzing oxidation of 5-hydroxymethylfurfural and simultaneously electrolyzing water to prepare hydrogen
  • Method for preparing 2, 5-furandicarboxylic acid by electro-catalyzing oxidation of 5-hydroxymethylfurfural and simultaneously electrolyzing water to prepare hydrogen

Examples

Experimental program
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preparation example Construction

[0076] The preparation method of described monolithic catalyst comprises the following steps:

[0077] S100, preparation of solution: Co(NO 3 ) 2 Mix with nitrogen and carbon compounds in a certain proportion and add water to form a solution; wherein, the Co(NO 3 ) 2 The molar ratio to nitrogen and carbon compounds is 1:1.5 to 1:5. Preferably, as an implementation manner, the nitrogen- and carbon-containing compound is one or both of urea and tetrasodium edetate.

[0078] In the present application, there is no particular limitation on the concentration of the prepared solution. In order to prepare a monolithic nitrogen-doped carbon-wrapped cobalt tetraoxide nanowire catalyst with excellent performance, enhance its catalytic stability, and prolong its service life, preferably, Co(NO 3 ) 2 The molar ratio with water is 1:600~1:1200.

[0079] S200, hydrothermal reaction: put the solution obtained in step S100 in a reaction kettle, add metal foam, carbon foam or carbon fib...

Embodiment 1

[0091] (1) Add 0.584g Co(NO 3 ) 2 ·6H 2 O, 0.6g urea, 36mL deionized water, stir well at room temperature. Among them, Co(NO 3 ) 2 The molar ratio to urea is 1:5, Co(NO 3 ) 2 The molar ratio with water is 1:1000.

[0092] (2) Transfer the solution prepared in step (1) to a 100mL reaction kettle, add foamed nickel carrier, make it immersed in the solution, put it in an oven and react at 120°C for 8h, take it out and wash it twice with water and ethanol in turn , placed in a beaker, and dried in an oven at 60° C. for 12 hours to obtain a precursor.

[0093] (3) Place the precursor obtained in step (2) in the quartz boat of the tube furnace, seal it and pass high-purity nitrogen gas as the whole process protective gas, wherein the flow rate of nitrogen gas is 150mL / min; The temperature was raised to 350°C at a speed of 1 min, and after holding for 0.5h, it was cooled to room temperature at a speed of 3°C / min. The obtained product was a monolithic nitrogen-doped carbon-wra...

Embodiment 2

[0095] (1) Add 0.584g Co(NO 3 ) 2 ·6H2 O, 0.2g urea, 36mL deionized water, stir well at room temperature. Among them, Co(NO 3 ) 2 The molar ratio to urea is 1:1.67, Co(NO 3 ) 2 The molar ratio with water is 1:1000.

[0096] (2) with embodiment 1

[0097] (3) Same as Example 1, the obtained sample is designated as sample 2.

[0098] Compared with Example 1, the quality of urea in the raw materials used in this example has changed, and the rest of the preparation conditions have not changed. As the quality of urea decreases, the nitrogen-doped carbon coating of the catalyst finally obtained becomes thinner, The amount of nitrogen doping is reduced.

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Abstract

The invention discloses a method for preparing 2, 5-furandicarboxylic acid by electro-catalyzing oxidation of 5-hydroxymethylfurfural. An electrolytic tank is adopted for catalytic oxidation; the electrolytic tank is a three-electrode electrolytic tank or a two-electrode electrolytic tank; the adopted anode is an integral electrode; the monolithic electrode comprises a carrier and a catalytic active substance loaded on the carrier; and the catalytic active substance comprises nitrogen-doped carbon nanowires wrapping cobaltosic oxide particles. The method is high in activity and selectivity, and the anode catalyst is high in tolerance to 5-hydroxymethylfurfural.

Description

technical field [0001] The application relates to a method for preparing 2,5-furandicarboxylic acid by electrocatalyzing the oxidation of 5-hydroxymethylfurfural while electrolyzing water to produce hydrogen, which belongs to the field of chemical industry. Background technique [0002] The increase in global energy consumption and the control of pollutant emissions in various countries have made the demand for clean energy more and more concerned. The development and utilization of hydrogen energy and biomass are considered to be feasible ways to address the above needs. [0003] As one of the twelve biomass platform compounds recognized by the U.S. Department of Energy, 2,5-furandicarboxylic acid (FDCA) is aromatic and has structural similarity to terephthalic acid (TPA). Taking polycondensation with ethylene glycol as an example, bio-based polyethylene furandicarboxylate (PEF) derived from FDCA is superior to polyethylene terephthalate in terms of gas barrier properties,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B3/23C25B3/05C25B3/07C25B1/04C25B11/091C25B11/061C25B11/031C25B11/065C25B9/17
CPCC25B1/04C25B9/00B01J27/24B01J35/0033C25B11/091C25B3/23C25B11/065C25B3/05C25B11/061C25B3/07Y02E60/36C07D307/68C25B9/17C25B11/031C25B11/054
Inventor 谌春林周振强张建
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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