Method for preparing 5-hydroxymethylfurfural through catalyzing fructose conversion by solid catalyst

A technology of hydroxymethyl furfural and solid catalyst, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the influence of catalytic activity, loss of active components, The problem of low thermal stability, etc., can achieve the effect of optimizing catalytic performance, improving selectivity, and improving effective diffusion and departure.

Active Publication Date: 2014-12-31
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since fructose is a polyhydroxy compound with a large molecular structure, the effective contact between the substrate and the active sites in the solid catalyst and the diffusion of the product are common problems in molecular sieves

Method used

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  • Method for preparing 5-hydroxymethylfurfural through catalyzing fructose conversion by solid catalyst
  • Method for preparing 5-hydroxymethylfurfural through catalyzing fructose conversion by solid catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment one: the preparation of catalyst A

[0019] Get 5 grams of polyethylene glycol-polypropylene glycol-polyethylene glycol triblock polymer (EO 20 PO 30 EO 20 , Mav=3400) was dissolved in 50 g of methanol to prepare solution 1. 2.6 g of aluminum chloride and 2.6 g of tin tetrachloride were respectively added to solution 1, after vigorous stirring for 1 hour, 0.5 g of water was added, and stirring was continued for 1 hour to form a sol solution. Then the solution was left to stand for 7 days at 40 degrees to gradually form a gel. After the aged gel sample was baked at 450°C for 10 hours to remove the surfactant, the catalyst A:Al 2 SnO 5 .

Embodiment 2

[0020] Embodiment 2: Dehydration of fructose to prepare HMF reaction activity determination

[0021] Get 5 grams of fructose, 0.5 grams of catalyst A and 20 grams of DMF into a 100 milliliter flask, stir magnetically, heat to 100 degrees, and stop the reaction after 8 hours of reaction. The catalyst was separated by centrifugation, and the upper reaction mixture was taken for analysis, wherein the raw material was quantitatively analyzed by liquid chromatography, and the product was quantitatively analyzed by gas chromatography. The reaction results are shown in Table 2.

Embodiment 3

[0022] Embodiment three: preparation and catalytic activity of catalyst B-G

[0023] Except for the types and proportions of the metal precursors used, the preparation method of the other catalysts is the same as in Example 1, and the compositions of catalysts B-G are shown in Table 1. The method for measuring the activity of the catalyst is the same as in Example 2. The results are shown in Table 2.

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Abstract

The invention relates to a method for preparing 5-hydroxymethylfurfural through efficiently catalyzing fructose dehydration by a solid catalyst. The above target product is obtained in a high yield manner through a reaction of fructose as a raw material under mild conditions with a polar solvent as a reaction medium and porous composite metal oxide as a catalyst. The method has the advantages of high yield, few byproducts, environmental protection, mild reaction conditions, simple operation, low corrosion to an apparatus, repeated use of the catalyst, and very strong industrial application prospect.

Description

technical field [0001] The invention relates to the field of clean and green conversion of biomass resources to synthesize bio-based platform compounds. Specifically, it relates to a catalyst for preparing 5-hydroxymethylfurfural by dehydration of fructose and a method for catalytically synthesizing 5-hydroxymethylfurfural. Background technique [0002] Saccharides are an important part of renewable biomass resources. Preparation of new platform compounds by catalytic conversion from sugar compounds is an effective way to solve the current shortage of fossil energy and the environmental pollution caused by its utilization. Therefore, starting from renewable and abundant biomass resources, the preparation of high value-added platform compounds by catalytic conversion has gradually attracted people's attention. In recent years, 5-hydroxymethylfurfural (HMF), a product obtained from the dehydration of six-carbon sugars, has been considered as an important bio-based platform c...

Claims

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Application Information

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IPC IPC(8): C07D307/46B01J35/10B01J23/14B01J23/34B01J23/30B01J23/08B01J23/882B01J23/83B01J23/847
CPCB01J23/002B01J23/08B01J23/14B01J23/30B01J23/34B01J23/83B01J23/8476B01J23/882B01J35/10C07D307/46
Inventor 徐杰任秋鹤黄义争马红苗虹高进
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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