Catalyst for catalyzing 5-hydroxymethylfurfural to prepare furan-2,5-dicarbaldehyde in water phase, and preparation method and application of catalyst

A technology for hydroxymethyl furfural and furandiformaldehyde, which is applied in the field of water-phase catalysis of 5-hydroxymethyl furfural to prepare 2,5-furandiformaldehyde, can solve problems such as environmental damage and formation of acid rain, and achieves easy recovery and production cost. Low, environmentally friendly effect

Active Publication Date: 2017-12-01
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method does not need to use a catalyst, and has the advantages of high product yield and easy separation, mild reaction conditions, and low production cost, but Cu(NO 3 ) 2 ·3H 2 O will produce a large amount of nitrogen oxides while oxidizing 5-hydroxymethylfurfural, and nitrogen oxides are the main components of air pollution, and may also form acid rain, causing damage to the environment

Method used

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  • Catalyst for catalyzing 5-hydroxymethylfurfural to prepare furan-2,5-dicarbaldehyde in water phase, and preparation method and application of catalyst
  • Catalyst for catalyzing 5-hydroxymethylfurfural to prepare furan-2,5-dicarbaldehyde in water phase, and preparation method and application of catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Weigh 0.98g graphene and 1.1mL HAuCl 4 After the aqueous solution (0.01mol / L) is mixed, it is transferred to the hydrothermal reactor, 29mL of deionized water is added, and the reaction is carried out at 150℃ for 5h. After natural cooling, it is washed with water and absolute ethanol three times to obtain a black powder. Dry for 8h at ℃, and finally put it in a tube furnace, H 2 / Ar atmosphere reduced for 5h, where H 2 The volume fraction is 5%, the gas flow rate is 10mL / min, and the reduction temperature is 400°C. 1 g of graphene-supported metal gold (Au2wt%) catalyst can be obtained, wherein the particle size of the gold nanoparticles is 10 nanometers.

[0024] Add 1g of the above-mentioned catalyst, 1mmol 5-hydroxymethylfurfural and 10mL deionized water into a closed reaction vessel lined with polytetrafluoroethylene. After sealing, it is washed several times with oxygen, and 100mmol of oxygen is introduced, and the temperature is raised under stirring. To 30°C, react a...

Embodiment 2

[0026] Weigh 0.99g silicon carbide and 1.0mL RuCl 3 After the aqueous solution (0.01mol / L) is mixed, it is transferred to the hydrothermal reactor, 88mL of deionized water is added, and the reaction is carried out at 250℃ for 15h. After natural cooling, it is washed with water and absolute ethanol three times to obtain dark green powder. Dry for 12h at 120℃, and finally put it in a tube furnace, H 2 / Ar atmosphere reduced for 12h, where H 2 The volume fraction of is 10%, the gas flow rate is 30mL / min, and the reduction temperature is 600°C. 1g of silicon carbide supported metal ruthenium (Ru1wt%) catalyst can be obtained, wherein the diameter of the ruthenium nanoparticles is 6 nanometers.

[0027] Add 1g of the above catalyst, 0.25mmol 5-hydroxymethylfurfural and 10mL deionized water into a closed reaction vessel lined with polytetrafluoroethylene. After sealing, it is washed several times with oxygen, and 25mmol of oxygen is introduced under stirring. The temperature is increas...

Embodiment 3

[0029] Weigh 0.80g carbon nitride and 5.1mL H 2 PtCl 3 ·6H 2 O and 15.7mL Cu(NO 3 ) 2 After the aqueous solution (0.01mol / L) is mixed, it is transferred to the hydrothermal reactor, 60mL of deionized water is added, and the reaction is carried out at 220°C for 12h. After natural cooling, it is washed with water and absolute ethanol three times to obtain a dark green powder. Dry it at 120℃ for 10h, and finally put it in a tube furnace, H 2 / Ar atmosphere reduced for 5h, where H 2 The volume fraction is 5%, the gas flow rate is 15mL / min, and the reduction temperature is 500°C. 1 g of carbon nitride supported platinum-copper alloy (Pt 10wt%, Cu 10wt%) catalyst can be obtained, wherein the platinum-copper alloy nanoparticles have a particle size of 56 nanometers.

[0030] Add 1g of the above catalyst, 1mmol 5-hydroxymethylfurfural and 10mL deionized water into a closed reaction vessel lined with polytetrafluoroethylene. After sealing, it is washed several times with oxygen, and 10mmol...

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Abstract

The invention discloses a Catalyst for catalyzing 5-hydroxymethylfurfural to prepare furan-2,5-dicarbaldehyde in a water phase. The catalyst comprises a carrier, an active metal component and an auxiliary agent metal, by a final catalyst weight, the mass fraction of the active metal component is 1%-20%, the mass fraction of the auxiliary agent metal component copper is 0-10%, and the balance is that of the carrier, wherein the carrier is one selected from graphene, silicon carbide, aluminium oxide, silicon dioxide, activated carbon and carbon nitride, and the active metal component is one or two selected from gold, palladium, platinum, silver, ruthenium and rhodium. A preparation method provided in the invention has the advantages that the method is mild in reaction conditions, friendly to environments, high in conversion efficiency and good in selectivity.

Description

Technical field [0001] The invention relates to a catalyst for preparing 2,5-furandiformaldehyde from 5-hydroxymethyl furfural through aqueous phase catalysis, and a preparation method and application thereof. Background technique [0002] 2,5-furandiformaldehyde is an important chemical intermediate, which is widely used in the synthesis of furan polymers, various polyschiff acids, antifungal agents, drugs, pesticides, organic conductors, crosslinking agents, etc. It can also be used as a monomer to synthesize various functional materials. [0003] Catalytic selective oxidation of 5-hydroxymethylfurfural (HMF) to prepare 2,5-furandiformaldehyde (DFF) is considered to be the only feasible industrial method. However, 2,5-furandiformaldehyde can continue to be oxidized into 5-formyl-2-furan dicarboxylic acid (FFCA) and 2,5-furandicarboxylic acid (FDCA). In addition, 5-hydroxymethylfurfural can also be oxidized to 5-hydroxymethyl-2-furancarboxylic acid (HMFCA) and other by-products ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D307/48B01J23/52B01J23/44B01J23/42B01J23/50B01J23/46B01J23/89
CPCB01J23/42B01J23/44B01J23/462B01J23/464B01J23/50B01J23/52B01J23/8926C07D307/48
Inventor 郭向云马奔王英勇
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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