Method for extracting and separating 5-hydroxymethylfurfural and fructose by using ionic liquid aqueous two-phase system

A technology of hydroxymethylfurfural and two-phase aqueous system, which is applied in the direction of separation methods, chemical instruments and methods, liquid solution solvent extraction, etc., can solve the problems of high separation cost, poisonous and harmful, complicated operation, etc., and achieve good chemical stability , non-volatile, large electrochemical window effect

Active Publication Date: 2019-02-22
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the disadvantages of high cost, toxic and harmful, complicated operation and high separation cost of traditional extraction and separation methods, the present invention aims to solve one of the above problems; Furfural and fructose method

Method used

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  • Method for extracting and separating 5-hydroxymethylfurfural and fructose by using ionic liquid aqueous two-phase system
  • Method for extracting and separating 5-hydroxymethylfurfural and fructose by using ionic liquid aqueous two-phase system
  • Method for extracting and separating 5-hydroxymethylfurfural and fructose by using ionic liquid aqueous two-phase system

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Experimental program
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Effect test

Embodiment 1

[0031] (1) Add 3g of [C 4 mim][CF 3 SO 3 ] solution, add 4g of NaH 2 PO 4 2H 2 O, then add 3 g of pre-prepared mixed solution of 5-hydroxymethylfurfural and 25 mg / mL fructose with a mass concentration of 1.0 mg / mL.

[0032] In order to test the accuracy of the data, each sample was equipped with three parallel experiments.

[0033] (2) After the ionic liquid two-phase aqueous system was prepared, it was shaken on a vortex shaker for 5 minutes to ensure that the whole system was evenly mixed, and then placed in a constant temperature water bath at 25°C for 1 hour. After the phase separation was completed, the upper and lower phase solutions were taken respectively for the determination of the concentrations of 5-hydroxymethylfurfural and fructose.

[0034] (3) in the present invention, the mensuration method of 5-hydroxymethylfurfural concentration is ultraviolet spectrophotometry, observes according to ultraviolet scanning figure, has two wave peaks, considers [C 4 mim]...

Embodiment 2

[0037] (1) Add 3g of [C 4 mim][CF 3 SO 3 ] solution, add 4g of NaH 2 PO4 2H 2 O, then add 3g of pre-prepared mass concentration of 1.5mg / mL of 5-hydroxymethylfurfural and 50mg / mL of fructose mixed solution.

[0038] In order to test the accuracy of the data, each sample was equipped with three parallel experiments.

[0039] (2) After the ionic liquid two-phase aqueous system was prepared, it was shaken on a vortex shaker for 5 minutes to ensure that the whole system was evenly mixed, and then placed in a constant temperature water bath at 25°C for 1 hour. After the phase separation was completed, the upper and lower phase solutions were taken respectively for the determination of the concentrations of 5-hydroxymethylfurfural and fructose.

[0040] (3) in the present invention, the mensuration method of 5-hydroxymethylfurfural concentration is ultraviolet spectrophotometry, observes according to ultraviolet scanning figure, has two wave peaks, considers [C 4 mim][CF 3 SO...

Embodiment 3

[0043] (1) Add 3g of [C 4 mim][CF 3 SO 3 ] solution, add 4g of NaH 2 PO 4 2H 2 O, then add 3g of pre-prepared mixed solution of 5-hydroxymethylfurfural with a mass concentration of 2.0mg / mL and 75mg / mL of fructose.

[0044] In order to test the accuracy of the data, each sample was equipped with three parallel experiments.

[0045] (2) After the ionic liquid two-phase aqueous system was prepared, it was shaken on a vortex shaker for 5 minutes to ensure that the whole system was evenly mixed, and then placed in a constant temperature water bath at 30°C for 1 hour. After the phase separation was completed, the upper and lower phase solutions were taken respectively for the determination of the concentrations of 5-hydroxymethylfurfural and fructose.

[0046] (3) in the present invention, the mensuration method of 5-hydroxymethylfurfural concentration is ultraviolet spectrophotometry, observes according to ultraviolet scanning figure, has two wave peaks, considers [C 4 mim]...

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Abstract

The invention belongs to the technical field of biochemical separation, and relates to a method for extracting and separating 5-hydroxymethylfurfural and fructose by using an ionic liquid aqueous two-phase system. The method includes the steps of preparing a mixed solution of the 5-hydroxymethylfurfural and the fructose, adding 1-butyl-3-methylimidazolium trifluoromethanesulfonate and sodium dihydrogen phosphate dehydrate to form the ionic liquid aqueous two-phase system, and placing the mixture in a constant temperature water bath for standing reaction; after phase separation, taking the enriched ionic liquid phase solution and the enriched inorganic salt phase solution for determining the content of the 5-hydroxymethylfurfural and the fructose, wherein the 5-hydroxymethylfurfural is extracted to the enriched ionic liquid phase, and the fructose is extracted to the enriched inorganic salt phase. The ionic liquid aqueous two-phase system is simple in operation, high in extraction rate,short in extraction time, low in energy consumption, environmentally friendly and high in efficiency. At the same time, the extracted 5-hydroxymethylfurfural has good quality. The method overcomes the shortcomings of complicated operation, high cost and high equipment requirement of the traditional extraction and separation method and high volatility and high toxicity of the traditional liquid-liquid extraction.

Description

technical field [0001] The invention belongs to the technical field of biochemical separation, and relates to a method for extracting and separating fructose and 5-hydroxymethylfurfural by using an ionic liquid two-phase system. Background technique [0002] Global oil, natural gas and other non-renewable resources are decreasing day by day, and energy crisis is beginning to appear, while the demand for energy is increasing day by day. As the strategy of green and sustainable development continues to gain popularity, the development of green and renewable resources has attracted people's attention. Among them, 5-hydroxymethylfurfural, as a very representative biomass energy material monomer, is considered as a raw material for biomass-derived fuels. 5-Hydroxymethylfurfural contains active groups such as furan ring, aldehyde group, and hydroxymethyl group in the molecule, and can be used as an intermediate in many reactions such as oxidation, hydrogenation, and condensation t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D11/04C13K11/00C07D307/46
CPCB01D11/0419B01D11/0492C07D307/46C13K11/00
Inventor 周存山李墨余筱洁姬青华江昊南
Owner JIANGSU UNIV
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