A kind of integrated catalytic conversion method for biomass furfural compounds in ethanol

A catalytic conversion method and compound technology, applied in the field of integrated catalytic conversion of biomass furfural compounds in ethanol, can solve the problem of low selectivity of acetaldehyde stability target products, and achieve good industrial application potential, atom economy and The effect of high mass conversion rate and mild reaction conditions

Active Publication Date: 2021-06-04
FUDAN UNIV
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  • Description
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AI Technical Summary

Problems solved by technology

At present, the main disadvantages of this type of catalytic reaction are the stability of acetaldehyde and the low selectivity of the target product.

Method used

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  • A kind of integrated catalytic conversion method for biomass furfural compounds in ethanol
  • A kind of integrated catalytic conversion method for biomass furfural compounds in ethanol
  • A kind of integrated catalytic conversion method for biomass furfural compounds in ethanol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4

[0034] Coupling of hydrogen transfer reactions and intersecthyde condensation reactions: 0.48 g (5 mmol) furfural is dissolved in 2.30 g (50 mmol) ethanol, adding a catalyst, forming a sealed reaction vessel, microwave radiation for 4 hours, and the reaction temperature is 140 ° C . The catalyst is divided into the following four: 200 mg Zr-Beta zeolite molecular sieve, add 25 mg of potassium carbonate, and add 200 mg of Zr-Beta zeolite molecular sieve and add 25 mg of potassium carbonate, no catalyst. The reaction results are shown in Table 1.

[0035] As can be seen from Table 1, the Zr-Beta zeolite molecular sieve can catalyze the hydrogen transfer reaction between furfural and ethanol, the main product obtained is a furfury and acetaldehyde, and the gas phase chromatogram of the product is seen. figure 1 . In the case of simultaneous addition of Zr-beta zeolite molecular sieve and potassium carbonate, two products having similar yields can be obtained, and the gas phase chroma...

Embodiment 5

[0039] Experiments were carried out using methods similar to Example 2, but Zr-beta was changed to HF-BETA zeolite molecular sieve to obtain a similar furfural conversion and product yield.

Embodiment 6

[0041] Experiments were carried out using the method similar to Example 2, but the 200 mg Zr-Beta zeolite molecular sieves were used to 250 mg of zirconia to obtain a similar furfural conversion and product yield.

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Abstract

The invention belongs to the technical field of biomass conversion, in particular to an integrated catalytic conversion method for biomass furfural compounds in ethanol. The method starts from the ethanol solution of furfural compounds. The furfural compounds are first converted into furfuryl alcohol products through the hydrogen transfer reaction catalyzed by Lewis acid. Cross-aldol condensation reaction, converted into furan acrolein products, realized the effective coupling of hydrogen transfer reaction and cross-aldol condensation reaction; using the difference in solubility of furfuryl alcohol and furan acrolein products in water, realized the two products effective separation. The invention can realize the effective conversion of high-concentration furfural compounds, ensuring high mass conversion rate and high ethanol utilization rate of furfural compounds; simple operation, mild reaction conditions, high atom economy and mass conversion rate, and no need to use noble metal catalysts , completely independent of fossil fuels.

Description

Technical field [0001] The present invention belongs to the field of biomass conversion, and more particularly to an integrated catalytic conversion method for biomass compound compounds in ethanol, which realizes the effective coupling of hydrogen transfer and intersecthyde condensation reaction and efficient upgrade of ethanol. use. Background technique [0002] With the growth of energy demand, the consumption of petrochemical resources and environmental requirements, the development of green, economic, efficient and environmentally friendly catalytic conversion systems is the key to renewable biomass resources ( Chem. Rev. 2007, 107 , 2411-2502; Curr. Opin. Biotechnol. 2016, 38 , 54-62). Furfural compounds (furfural, 5-methylfurfural and 5-hydroxymethylafural) are important lignocellulose biomass derived platform molecules, which can be reduced, oxidized, etherified, esterification, and condensation. , Converted to high value-added fine chemicals and liquid fuels ( 能源 Enviro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D307/44C07D307/46C07D307/42
CPCC07D307/42C07D307/44C07D307/46Y02P20/584
Inventor 张亚红李刚唐颐孙振闫玥儿冯磊侯文蓉刘丽丽
Owner FUDAN UNIV
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