Method for green preparation of 5-hydroxymethyl furfural from monosaccharide

A technology of hydroxymethyl furfural and monosaccharide, applied in the field of biomass, can solve the problems of high cost and difficult separation of products, and achieve the effects of simple process, easy industrialization and mild operating conditions

Active Publication Date: 2017-11-10
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a green method for preparing 5-hydroxymethylfurfural using monosaccharides, using glucose and fructose as reaction raw materials, with low price and no environmental pollution containing zirconium phosphate and niobium phosphate containing B acid and L acid , Sulfated zirconia as a catalyst, using a fixed bed as a reactor to catalyze monosaccharides to produce HMF, the method has mild operating conditions, simple process, easy industrialization, and realizes green continuous preparation of HMF in the gas phase, avoiding the use of expensive and harmful The environment is polluted by organic solvents, and the product is taken out of the reactor by the carrier gas to realize the direct separation of the catalyst and the product, which solves the problem of high cost and difficult separation of the product

Method used

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  • Method for green preparation of 5-hydroxymethyl furfural from monosaccharide

Examples

Experimental program
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Effect test

Embodiment 1

[0022] (1) Take 100ml of glucose solution with a concentration of 10% and put it into liquid storage tank 1;

[0023] (2) Take by weighing 40-60 order zirconium phosphate catalyst 1g and put into fixed bed reactor 6, tighten fixed bed reactor 6 joints;

[0024] (3) Nitrogen is fed into the fixed-bed reactor 6, the system pressure is increased to 3Mpa, and the nitrogen flow rate is set at 0.5L / min;

[0025] (4) The temperature of the fixed bed reactor 6 is set to be 160° C., and the temperature of the preheater 5 is 100° C., and the fixed bed reactor 6 and the preheater 5 are started to be heated;

[0026] (5) After the temperature of the preheater 5 and the fixed bed reactor 5 rises to the predetermined temperature respectively, the sugar solution is provided to the preheater 5 through the high-pressure advection pump 2, the water flow rate is 0.1ml / min, and the solution is in the preheater 5 Pass into fixed-bed reactor 6 after becoming gas-liquid state and mix with nitrogen;...

Embodiment 2

[0030] (1) Take 100ml of glucose solution with a concentration of 10% and put it into liquid storage tank 1;

[0031] (2) Take by weighing 40-60 order niobium phosphate catalyst 1g and put into fixed bed reactor 6, tighten fixed bed reactor 6 joints;

[0032] (3) Nitrogen is fed into the fixed-bed reactor 6, the system pressure is increased to 3Mpa, and the nitrogen flow rate is set at 0.5L / min;

[0033] (4) The temperature of the fixed bed reactor 6 is set to be 150° C., and the temperature of the preheater 5 is 100° C., and the fixed bed reactor 6 and the preheater 5 are started to be heated;

[0034] (5) After the temperature of the preheater 5 and the fixed bed reactor 5 rises to the predetermined temperature respectively, the sugar solution is provided to the preheater 5 through the high-pressure advection pump 2, the water flow rate is 0.1ml / min, and the solution is in the preheater 5 Pass into fixed-bed reactor 6 after becoming gas-liquid state and mix with nitrogen; T...

Embodiment 3

[0038] (1) Take 100ml of glucose solution with a concentration of 10% and put it into liquid storage tank 1;

[0039] (2) Weigh 1g of 40-60 mesh sulfated zirconia catalyst and put it into fixed-bed reactor 6, and tighten the fixed-bed reactor 6 joints;

[0040] (3) Nitrogen is fed into the fixed-bed reactor 6, the system pressure is increased to 3Mpa, and the nitrogen flow rate is set at 0.5L / min;

[0041] (4) The temperature of the fixed bed reactor 6 is set to be 180° C., and the temperature of the preheater 5 is 100° C., and the fixed bed reactor 6 and the preheater 5 are started to be heated;

[0042] (5) After the temperature of the preheater 5 and the fixed bed reactor 5 rises to the predetermined temperature respectively, the sugar solution is provided to the preheater 5 through the high-pressure advection pump 2, the water flow rate is 0.1ml / min, and the solution is in the preheater 5 Pass into fixed-bed reactor 6 after becoming gas-liquid state and mix with nitrogen;...

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Abstract

The invention discloses a method for green preparation of 5-hydroxymethyl furfural from monosaccharide. With the method provided by the invention, HMF is prepared by catalyzing the monosaccharide with glucose and fructose as raw materials, cheap and pollution-free zirconium phosphate, niobium phosphate and sulfated zirconia containing B acid and L acid as catalysts and a fixed bed as a reactor. The method has the advantages of mild operation conditions, simple process and easy industrialization, realizes green and continuous preparation of HMF in a gas phase, avoids usage of an organic solvent with high price and pollution to the environment, realizes direct separation of the catalysts and a product since the product is brought out from the reactor by carrier gas, and solves the problems of high cost and difficult product separation in the prior art.

Description

Technical field: [0001] The invention relates to the technical field of biomass, in particular to a method for greenly preparing 5-hydroxymethylfurfural by using monosaccharides. Background technique: [0002] 5-Hydroxymethylfurfural (HMF) is an important functional platform compound affecting the entire biorefinery industry and is an important component of high-value chemicals, polymers and fuels. It can be used as a raw material for the synthesis of many useful compounds and new polymer materials, including the synthesis of medicines, synthetic plastic resins, additives and diesel fuels through oxidation, esterification, hydrolysis, and other chemical reactions such as hydrogenation and dehydrogenation. [0003] HMF is active in nature and poor in stability, and there is no technology for industrialized preparation of HMF at present. The current preparation of HMF mainly uses monosaccharides such as glucose and fructose as raw materials, and is carried out in a high-press...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D307/46
CPCY02P20/584C07D307/46
Inventor 刘琪英蔡炽柳马隆龙王晨光李丹
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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