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A large pore phenolic resin and its preparation methods and applications on adsorbing 5-hydroxymammer bran

A technology of hydroxymethylfurfural and phenolic resin, applied in the direction of selective adsorption, chemical instruments and methods, and other chemical processes, can solve the problem of reducing the yield of 5-hydroxymethylfurfural, not improving the adsorption performance of phenolic resin, and not suitable for large-scale Large-scale industrial production and other issues, to achieve the effect of easy regeneration and recycling, shortening the initial concentration time, and low cost

Active Publication Date: 2022-03-04
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation process will be accompanied by the occurrence of negative reactions, producing levulinic acid and formic acid by-products, greatly reducing the yield of 5-hydroxymethylfurfural, so 5-hydroxymethylfurfural is separated from the reaction system in time appears to be particularly important
[0003] At present, the methods for separating 5-hydroxymethylfurfural mainly include vacuum distillation, membrane separation, extraction, chromatographic separation, etc. The problem is that the membrane used for separation is expensive and easily polluted; the extraction method requires a large amount of organic extraction solvent, which is not suitable for large-scale industrial production
Prior art CN106430183A discloses a spherical phenolic-based activated carbon and a preparation method thereof. In this technology, a spherical phenolic resin is prepared by using a reverse-phase suspension polymerization process, and further carbonized and activated to obtain a phenolic-based activated carbon. The improvement of performance mainly depends on the active carbon component, which does not improve the adsorption performance of phenolic resin itself, and the improvement of adsorption and separation capacity is limited

Method used

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  • A large pore phenolic resin and its preparation methods and applications on adsorbing 5-hydroxymammer bran
  • A large pore phenolic resin and its preparation methods and applications on adsorbing 5-hydroxymammer bran
  • A large pore phenolic resin and its preparation methods and applications on adsorbing 5-hydroxymammer bran

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Effect test

Embodiment 1

[0039] A kind of macroporous phenolic resin, the BET specific surface area of ​​macroporous phenolic resin is 1050m 2 / g, the pore volume is 1.25 cm 3 / g, the average pore diameter is 5.0nm,

[0040] The preparation method of macroporous phenolic resin comprises the steps:

[0041] (1) Slurry

[0042] Add 28g of phenol, 60g of 37% formaldehyde, 150g of ethylene glycol, and 3.0g of NaOH into a 500mL three-necked flask equipped with a thermometer, a stirring device and a condenser, stir until the solid dissolves, heat up to 77°C, and cool down to room temperature to form a slurry after 2 hours of reaction , wherein the mol ratio of phenolic monomers to formaldehyde is 1:2.5, the mol ratio of phenolic monomers to NaOH is 1:0.25, the total mass of phenolic monomers and formaldehyde: the mass ratio of porogen is 1:3;

[0043] (2) into a ball

[0044] Add 480g of turbine oil and 0.375wt% gSpan-80 into a 1000mL three-necked flask equipped with a thermometer, a stirring device and...

Embodiment 2

[0048] Same as Example 1, except that the molar ratio of phenolic monomers to formaldehyde is 1:3.5, the molar ratio of phenolic monomers to NaOH is 1:0.25, the total mass of phenolic monomers and formaldehyde: porogen The mass ratio is 1:3.

Embodiment 3

[0050] Same as Example 1, except that the molar ratio of phenolic monomers to formaldehyde is 1:10, the molar ratio of phenolic monomers to NaOH is 1:5, and the total mass of phenolic monomers and formaldehyde: porogen The mass ratio is 1:10.

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Abstract

The invention provides a macroporous phenolic resin, a preparation method thereof and an application in adsorbing 5-hydroxymethylfurfural. The BET specific surface area of ​​the macroporous phenolic resin of the present invention is 400~1300m 2 / g, the pore volume is 0.3~1.5cm 3 / g, the average pore diameter is 1-20nm. The macroporous phenolic resin of the present invention has high specific surface area, high adsorption capacity, high adsorption selectivity, and rich pore structure is easy to regenerate and recycle, and the macroporous phenolic resin has abundant hydroxyl functional groups, and through hydrogen bonds and hydrophobic interactions, the The adsorption capacity of 5-hydroxymethylfurfural is greatly improved, the maximum adsorption capacity can reach 111mg / g wet resin, and the elution yield of 5-hydroxymethylfurfural is greater than 99.5%; the efficient separation of 5-hydroxymethylfurfural is realized. The macroporous phenolic resin of the present invention is applied to adsorption and separation of 5-hydroxymethylfurfural, does not generate waste water, can greatly shorten the initial concentration time of 5-hydroxymethylfurfural, and realizes green separation.

Description

technical field [0001] The invention relates to the technical field of adsorption resins, more specifically, to a macroporous phenolic resin, a preparation method thereof and an application in adsorbing 5-hydroxymethylfurfural. Background technique [0002] With the depletion of non-renewable resources such as petroleum and coal and the continuous deterioration of the environment, the exploration of renewable, efficient and clean biomass resources has attracted much attention. In recent years, biomass has been recognized as one of the ideal resources that can replace non-renewable resources to synthesize high value-added chemicals and alternative energy fuels. The preparation of 5-hydroxymethylfurfural from biomass has been the focus and focus of scientists' research in the past ten years. 5-hydroxymethylfurfural is one of the important biomass platform compounds, and there are about 115 downstream products and derivatives. It can be used to replace petroleum fuels, manufac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/28B01J20/26B01J20/30B01D15/08C07D307/46
Inventor 林晓清郑嘉怡刘耀袁淑娴彭智童何先达肖江雄陈哲潘宝盈
Owner GUANGDONG UNIV OF TECH
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