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Catalyst for catalyzing saccharides to synthesize 5-hydroxymethyl furfural and method of catalyzing saccharides to synthesize the same

A technology of hydroxymethylfurfural and catalyst, which is applied in the field of catalyzing the synthesis of 5-hydroxymethylfurfural from sugar, and can solve the problem of low catalytic effect

Active Publication Date: 2017-09-15
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since glucose dehydration requires Lewis acid as a catalyst for its isomerization to fructose, PA-PBI has a low catalytic effect on glucose

Method used

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  • Catalyst for catalyzing saccharides to synthesize 5-hydroxymethyl furfural and method of catalyzing saccharides to synthesize the same
  • Catalyst for catalyzing saccharides to synthesize 5-hydroxymethyl furfural and method of catalyzing saccharides to synthesize the same
  • Catalyst for catalyzing saccharides to synthesize 5-hydroxymethyl furfural and method of catalyzing saccharides to synthesize the same

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preparation example Construction

[0070] The present invention also provides a kind of preparation method of the catalyst of above-mentioned catalytic sugar synthesis 5-hydroxymethylfurfural, comprising the following steps:

[0071] The compound containing metal ions and the ligand are mixed, and a hydrothermal synthesis reaction is carried out to obtain a catalyst for catalyzing the synthesis of 5-hydroxymethylfurfural from sugar.

[0072] In some specific embodiments of the present invention, the ligand is selected from the first ligand; in other embodiments of the present invention, the ligand is selected from the first ligand and the second ligand, the first ligand The molar ratio of the first ligand to the second ligand is preferably 1:(0-4), more preferably 1:(0-2).

[0073] Wherein, the selection of the first ligand and the second ligand type is as the selection of the first ligand and the second ligand type in the catalyst for catalyzing the synthesis of 5-hydroxymethylfurfural from sugar as described ...

Embodiment 1

[0092] Cobalt nitrate (23.3 mg, 0.08 mmol), tetrakis (4-phosphonophenyl) methane (25.6 mg, 0.04mmol), 2,2'-bipyridine (6.2mg, 0.04mmol), 15 ml of water were added to a 50 ml stainless steel reactor with a polytetrafluoroethylene liner, heated at 180°C for 3 days, After cooling to room temperature, blue rod-shaped crystals were obtained by centrifugation, washed with deionized water, dried in vacuum, and ground into fine particles with a mortar. The catalyst was named Co-MOF-11. Carry out infrared spectrum detection to catalyst, the result sees figure 1 , figure 1 Infrared spectrum of Co-MOF-11 prepared in Example 1.

[0093] Carry out thermogravity detection to catalyst, the result sees figure 2 , figure 2 Thermogravimetric curve of Co-MOF-11 prepared for Example 1.

Embodiment 2

[0095] Cobalt nitrate (23.3 mg, 0.08 mmol), tetrakis (4-phosphonic acid phenyl) silane (26.3 mg, 0.04 mmol), 2,2'-bipyridine (6.2 mg, 0.04 mmol), 15 ml of water were added to a 50 ml stainless steel reactor with a polytetrafluoroethylene liner, heated at 180 ° C for 4 days, After cooling to room temperature, the blue rod-shaped crystals were obtained by centrifugation, washed with deionized water, dried in vacuum, and ground into fine particles with a mortar. The catalyst was named Co-MOF-21.

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Abstract

The invention provides a catalyst for catalyzing saccharides to synthesize 5-hydroxymethyl furfural and a method of catalyzing saccharides to synthesize the same. In the invention, a compound containing metal ions and an organic ligand are used for synthesizing MOF, wherein the ligand supplies a Bronsted acid active center while the metal supplies a Lewis acid active center. The catalyst can greatly improve the catalytic conversion efficiency of glucose; meanwhile, the catalyst has strong catalysis performance on disaccharides and polysaccharides, even crop straws, cotton, hemps and other biomass raw materials; in addition, the method of catalyzing saccharides to synthesize the 5-hydroxymethyl furfural has high reaction rate and gentle reaction conditions. Being different from conventional homogeneous catalysts, the solid-phase catalyst is easy to recycle and reutilize. The MOF catalyst has good stability and can be recycled without regeneration. The catalyst not only reduces environment pollution but also greatly reduces preparation cost. The product, HMF, is easy to separate, so that the method is simple and convenient.

Description

technical field [0001] The invention belongs to the technical field of heterogeneous catalysis, and in particular relates to a catalyst for catalyzing the synthesis of 5-hydroxymethylfurfural from sugar and a method for catalyzing the synthesis of 5-hydroxymethylfurfural from sugar. Background technique [0002] 5-Hydroxymethylfurfural (HMF) is an important bio-based platform compound that can be used to synthesize polymer monomers, biofuels, drugs or drug intermediates, etc. The breakthrough point of the product route. [0003] The existing HMF synthesis method is prepared by acid-catalyzed dehydration of fructose or glucose. However, under the action of acid, HMF is easy to hydrate and decompose to generate levulinic acid and formic acid. At the same time, under the conditions of its preparation, HMF is very easy to condense with reaction intermediates to generate insoluble humins (humins), making HMF preparation process There are many by-products and low product selecti...

Claims

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Application Information

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IPC IPC(8): C07D307/46B01J31/22
CPCB01J31/1815B01J31/185B01J2231/70B01J2531/16B01J2531/26B01J2531/31B01J2531/32B01J2531/57B01J2531/62B01J2531/821B01J2531/845B01J2531/847C07D307/46Y02P20/584
Inventor 季生象韩苗苗孙忠明闵雪
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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