A kind of preparation method of 5-hydroxymethylfurfural

Abstract

A method for preparing 5-hydroxymethylfurfural, relating to a method for preparing biological furfural. The invention discloses a method for preparing 5-hydroxymethylfurfural (5-hydroxymethylfurfural) by catalytic conversion in a liquid phase system using fructose-based biomass as a raw material ‑HMF), which involves the efficient catalytic conversion of carbohydrates to produce high value-added chemicals, which belongs to the field of biomass resource conversion and utilization. The method adopts the binary compound of chloride and phosphorus oxide as a catalyst, and can effectively convert the fructose-based biomass raw material into 5‑HMF in an organic solvent under medium and low temperature conditions. The method can adopt many catalysts, the catalyst components are flexible and adjustable, the reaction conditions are mild, and 5-HMF can be obtained relatively quickly, and the yield of 5-HMF is high. The information provided by this method provides a valuable reference for the efficient conversion of sugars.

Description

technical field [0001] The invention relates to a preparation method of biological furfural, in particular to a preparation method of 5-hydroxymethyl furfural. Background technique [0002] Facing the contradiction between the increasing demand for energy from social and economic progress and the depletion of traditional fossil resources, the development and utilization of new renewable energy is an effective measure to alleviate the above problems. At present, research all over the world is focused on the effective utilization of renewable resources. Biomass resources are considered as a potential alternative energy source because of their large reserves, wide distribution, non-polluting, renewable, and ability to reduce carbon dioxide emissions. Utilizing carbohydrates in inedible biomass to produce high value-added fine and fuel chemicals is the main hotspot in the current research field ( Chem. Rev. 2007, 107, 2411-2502). [0003] In recent years, 5-hydroxymethylfurfu...

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Problems solved by technology

[0005] As mentioned above, although many inorganic acids, organic acids, solid acids, metal salts, metal-loaded functional materials, etc. can be used as catalysts to realize the conversion of fructose into 5-HMF, the methods that have been publicly reported still have some problems as follows: For example: 1. Using a common water-organic solvent two-phase system, the temperature for effective conversion of fructose is relatively high, usually at 150-180 o C, and the pressure in the reaction system is relatively high; 2, using ionic liquid as solvent, although it is possible to reduce the fructose conversion temperature and shorten the reaction time, the cost of this type of solvent is higher, and the viscosity of ionic liquid is lower at a lower temperature 3. Using a common system, under the action of a catalyst, when selecting relatively mild reaction temperature, pressure and other conditions, although fructose can be effectively converted, the reaction time is relatively long and with the reaction conditions. 4. Although some special catalysts have good catalytic performance, can make the reaction conditions of fructose conversion milder, and the yield of 5-HMF is higher, but the preparation time of these catalysts is relatively long, and it is difficult to obtain , the cost is high, and more toxic substances will be used in the process of preparing the catalyst, etc.

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