Preparation method of 2,5-furandicarboxylic acid

A technology of furandicarboxylic acid and hydroxymethyl furfural, which is applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, organic chemistry, etc., can solve the problem of mild reaction conditions and complex and uncontrollable catalyst preparation processes. , the catalyst is expensive and other problems, to achieve the effect of reducing by-products, simple preparation method and increasing selectivity

Inactive Publication Date: 2019-04-19
合肥利夫生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the preparation method of FDCA is mainly the oxidative conversion of 5-hydroxymethylfurfural (5-HMF for short), but there are still

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Preparation of Na-Mn layered composite oxides:

[0029] 0.9mmol of MnCl 2 4H 2 O was dissolved in 9ml of water, placed in a round bottom flask, and 0.279ml of H with a mass fraction of 30wt% was added at one time 2 o 2 Aqueous solution, stirred for 5min to obtain A solution; 38.4mmol NaOH was dissolved in 2ml water to obtain NaOH aqueous solution; NaOH aqueous solution was added to A solution at one time, and the inner wall of the round bottom flask was washed with 10ml water, stirred at room temperature for 90min at a speed of 800rpm, filtered, Rinse the filter cake with water 3 times, each time with 100ml of water, and then with 50ml of ethanol once. During the rinsing process, the filter cake should not be completely dried and must be kept moist to avoid inactivation. Finally, dry it in an oven at 105°C for 18 hours to obtain Na -Mn layered composite oxide.

Embodiment 2

[0031] Preparation of K-Sn layered composite oxide:

[0032] 0.9mmol of SnCl 2 ·5H 2 O was dissolved in 9ml of water, placed in a round bottom flask, and 0.279ml of H with a mass fraction of 30wt% was added at one time 2 o 2 Aqueous solution, stirred for 5min to obtain liquid A; dissolve 38.4mmol of KaOH in 2ml of water to obtain aqueous KaOH; add aqueous KaOH to liquid A at one time, and rinse the inner wall of the round bottom flask with 10ml of water, stir at room temperature for 90min at a speed of 800rpm, filter, Rinse the filter cake with water 3 times, each time with 100ml of water, and then with 50ml of ethanol once. During the rinsing process, the filter cake should not be completely dried and must be kept moist to avoid inactivation. Finally, dry it in an oven at 105°C for 18 hours to obtain Na -Mn layered composite oxide.

Embodiment 3

[0034] Preparation of Na-Fe layered composite oxide:

[0035] 0.9mmol of Fe(NO 3 ) 3 9H 2 O was dissolved in 9ml of water, placed in a round bottom flask, and 0.279ml of H with a mass fraction of 30wt% was added at one time 2 o 2 Aqueous solution, stirred for 5min to obtain A solution; 38.4mmol NaOH was dissolved in 2ml water to obtain NaOH aqueous solution; NaOH aqueous solution was added to A solution at one time, and the inner wall of the round bottom flask was washed with 10ml water, stirred at room temperature for 90min at a speed of 800rpm, filtered, Rinse the filter cake with water 3 times, each time with 100ml of water, and then with 50ml of ethanol once. During the rinsing process, the filter cake should not be completely dried and must be kept moist to avoid inactivation. Finally, dry it in an oven at 105°C for 18 hours to obtain Na -Mn layered composite oxide.

[0036] The Na-Cu layered composite oxide, the Ca-Sn layered composite oxide, the Ba-Co layered compo...

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Abstract

The invention discloses a preparation method of 2,5-furandicarboxylic acid. The method comprises the following steps: uniformly mixing 5-hydroxymethylfurfural, an oxidation catalyst, an alkaline substance and a solvent, and carrying out catalytic conversion in the presence of an oxygen source to obtain the 2,5-furandicarboxylic acid, wherein the oxidation catalyst is an X-Y layered composite oxide, X is one of a group IA element and a group IIA element in the periodic table of elements, and Y is one of a group III element, a group IV element, a group VB element, a group VIB element, a group VIIB element, a group VIII element, a group IB element and a group IIB element in the periodic table of elements. The method has the advantages of high selectivity, few byproducts, mild reaction conditions, low energy consumption, and great reduction of the production cost by using the oxidation catalyst with a low price and avoiding the use of a noble metal catalyst, and the prepared 2,5-furandicarboxylic acid has a high purity and a high yield.

Description

technical field [0001] The invention relates to the technical field of chemical substance preparation, in particular to a preparation method of 2,5-furandicarboxylic acid. Background technique [0002] With the rapid growth of the world economy, the depletion of fossil fuels, especially oil, and the resulting environmental pollution have brought a series of social and environmental problems to human society. Biomass is a widely available carbon source and the most abundant fossil resource. Attractive alternative feedstock for the production of fuels and commodity chemicals. Inedible lignocellulosic biomass can be efficiently converted by acid-catalyzed hydrolysis into C5 and C6 monosaccharides, which can be further processed by acid-catalyzed dehydration to produce furanic compounds such as furfural and 5-hydroxymethylfurfural. [0003] 2,5-furandicarboxylic acid (FDCA for short) is a new polymer structure monomer with stable performance. It can be used to prepare polyeste...

Claims

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Application Information

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IPC IPC(8): C07D307/68B01J23/34B01J23/14B01J23/78
CPCC07D307/68B01J23/002B01J23/14B01J23/34B01J23/78
Inventor 徐海解光霞李兴龙孔庆山
Owner 合肥利夫生物科技有限公司
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