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Method for preparing ethyl levulinate based on acidic catalyst for catalysis of furfuryl alcohol

A technology of ethyl levulinate and an acidic catalyst is applied in the field of preparation of ethyl levulinate, and can solve the problems of difficult waste liquid treatment to pollute the environment, complicated ethyl levulinate processes, and high catalytic efficiency, and achieves overcoming the problems of the preparation process. Complex, large specific surface area, high catalytic efficiency

Inactive Publication Date: 2017-11-24
UNIV OF JINAN
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  • Application Information

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Problems solved by technology

[0004] The present invention aims at the deficiencies of the above-mentioned technologies, and provides a method for preparing ethyl levulinate based on acidic catalysts to catalyze furfuryl alcohol, aiming to solve the complicated process of preparing ethyl levulinate in the prior art, the low conversion rate and the difficult pollution of waste liquid treatment Environmental problems, using ethanol as a solvent, preparing ethyl levulinate through furfuryl alcohol, the yield of the target product is high, which can reach 95%, and there are few by-products; the preparation of ethyl levulinate by this method is convenient and simple, and is suitable for industrial Production, using acidic macroporous resin as catalyst, high catalytic efficiency, low cost, no pollution to the environment

Method used

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  • Method for preparing ethyl levulinate based on acidic catalyst for catalysis of furfuryl alcohol
  • Method for preparing ethyl levulinate based on acidic catalyst for catalysis of furfuryl alcohol
  • Method for preparing ethyl levulinate based on acidic catalyst for catalysis of furfuryl alcohol

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Embodiment 1

[0025] Embodiment 1, the present invention: with the mixed solution of water and ethanol as solvent, the method for preparing ethyl levulinate based on acid catalyst catalysis furfuryl alcohol, comprises the following steps:

[0026] (1) stirring: the furfuryl alcohol quality is 3g, the acid macroporous resin quality is 5g, the total volume of water and ethanol is 100ml, the volume ratio of ethanol and water is 0.5 / 1, after mixing, stir at room temperature, and the stirring speed is 700rpm, stirring time is 20min; such as figure 1 the formula shown;

[0027] (2) Air exhaust: after the mixture is added to the reactor, high-purity nitrogen is used to remove the air in the autoclave;

[0028] (3) heating: the mixture obtained by stirring is put into the autoclave reactor and heated to 175°C, and the heating rate is 10°C / min;

[0029] (4) sampling: the sample after heating is continued to be incubated at 175 ℃ and reacted, in the insulation process and sampling once every 20min,...

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Abstract

The invention discloses a method for preparing ethyl levulinate based on an acidic catalyst for catalysis of furfuryl alcohol. The method comprises the following steps: mixing and stirring acidic macroporous resin, water, the furfuryl alcohol and ethanol, discharging air, heating, cooling, washing, separating and drying. The method adopts the acidic macroporous resin as the catalyst, has high catalytic efficiency, low cost and no pollution to the environment. The ethyl levulinate is prepared through catalysis of the furfuryl alcohol by using the ethanol as a solvent, the yield of the target product is high, and can reach 95%, and byproducts are few. The method for preparing the ethyl levulinate is convenient and simple, and suitable for industrial production.

Description

technical field [0001] The invention relates to a method for preparing ethyl levulinate, in particular to a method for preparing ethyl levulinate based on acid catalyst catalyzing furfuryl alcohol. Background technique [0002] Levulinates are a class of short-chain fatty acid esters, generally colorless liquids with high boiling points. In terms of molecular structure, levulinic acid esters all have one carbonyl group and one ester group. The carbon-oxygen double bond on the carbonyl group is a strong polar bond, and the carbon atom is the center of positive charge. When the carbonyl group reacts, the affinity of the carbon atom is The electric center plays a decisive role. The carbonyl structure of levulinate allows it to be isomerized to obtain enol isomers. Therefore, levulinic acid esters have good reactivity and can undergo reactions such as hydrolysis, transesterification, addition, substitution, and redox. It is widely used in many industries such as food, medicin...

Claims

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Application Information

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IPC IPC(8): C07C67/00C07C69/716
CPCC07C67/00C07C69/716
Inventor 郑妍胡勋刘千河贾鹏章展铭
Owner UNIV OF JINAN
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