Macroporous phenolic resin, preparation method thereof and application thereof in adsorption of 5-hydroxymethyl furfural

Abstract

The invention provides a macroporous phenolic resin and a preparation method thereof, an application thereof in adsorption of 5-hydroxymethyl furfural. The macroporous phenolic resin has the BET specific surface area of 400-1300 m <2>/g, the pore volume of 0.3-1.5 cm <3>/g, and the average pore diameter of 1-20 nm. The macroporous phenolic resin has the advantages of high specific surface area, high adsorption capacity and high adsorption selectivity; the rich pore structure is regenerated and recycled easily; the macroporous phenolic resin has rich hydroxyl functional groups, and the adsorption capacity of 5-hydroxymethyl furfural is greatly improved through hydrogen bonding and hydrophobic interaction, wherein the maximum adsorption capacity can reach 111 mg/g wet resin, and the elutionyield of the 5-hydroxymethyl furfural is more than 99.5 percent; high efficiency separation of the 5-hydroxymethyl furfural can be achieved. The macroporous phenolic resin is applied to adsorption separation of the 5-hydroxymethyl furfural, does not generate waste water, and can greatly shorten the primary concentration time of the 5-hydroxymethyl furfural, thereby achieving 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...

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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

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