Method using furan to prepare methyl levulinate

A technology for methyl levulinate and furan, which is applied in the field of preparing methyl levulinate from furan, can solve the problems of many steps, complicated process, increased energy consumption, etc., and achieves the effects of mild reaction conditions, simple method, and increased yield

Inactive Publication Date: 2017-09-15
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When preparing methyl levulinate, furfural needs to be separated, and the steps are many and the process is complicated
Since C5 sugars cannot be directly converted into methyl levulinate, it is necessary to separate furfural from levulinic acid, xylose from glucose, and hemicellulose from cellulose, which greatly increases energy consumption

Method used

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  • Method using furan to prepare methyl levulinate
  • Method using furan to prepare methyl levulinate
  • Method using furan to prepare methyl levulinate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The present embodiment provides a kind of method that furan prepares methyl levulinate, described method is carried out as follows:

[0033] Add 1.8g of furan, 3.6g of cation exchange resin 70, 25ml of methylal, and 15ml of methanol into the reactor respectively, then use an autoclave to heat to 140°C within 10min, and stir at 500rpm for 2h under autonomous steam pressure to obtain acetyl Methyl propionate and levulinic acid products.

[0034] The obtained product was detected by GC-MS, and obtained as figure 1 The results shown by figure 1 It can be seen that the product obtained in this embodiment is methyl levulinate.

Embodiment 2

[0036] The present embodiment provides a kind of method that furan prepares methyl levulinate, described method is carried out as follows:

[0037] Add 1.5g of furan, 3.2g of cation exchange resin 70, 20ml of methylal, and 12ml of methanol into the reactor respectively, then use an autoclave to heat to 150°C within 10min, and stir for 1.8h at a speed of 500rpm under autonomous steam pressure to obtain Methyl levulinate and levulinic acid products.

Embodiment 3

[0039] The present embodiment provides a kind of method that furan prepares methyl levulinate, described method is carried out as follows:

[0040] Add 2.0g of furan, 4.0g of cation exchange resin 70, 35ml of methylal, and 21ml of methanol into the reactor respectively, and then use an autoclave to heat to 160°C within 10min, and stir for 2.2h at a speed of 500rpm under autonomous steam pressure to obtain Methyl levulinate and levulinic acid products.

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PUM

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Abstract

The invention provides a method using furan to prepare methyl levulinate. The method includes: adding the furan, cation exchange resin 70 and a solvent into a reactor, heating to 140-180 DEG C within 10 minutes, and stirring for 1.8-2.2 hours at the stirring speed of 450-550rpm to obtain the methyl levulinate and levulinic acid, wherein the solvent is methylal or the mixed liquid of methylal and a cosolvent, and the cosolvent is methanol or water. The method has the advantages that the method uses the furan to prepare the methyl levulinate in one step, the methylal is the electrophilic reagent of electrophilic substitution reaction for converting intermediate product sugar alcohol, and the methanol serving as the cosolvent and the reactant plays an important role; the reaction process does not need hydrogenation, and the method is simple in reaction condition and capable of saving cost.

Description

technical field [0001] The invention relates to a process for preparing methyl levulinate, in particular to a method for preparing methyl levulinate from furan. Background technique [0002] Methyl levulinate is a class of short-chain fatty acid esters, an important class of organic chemicals, a chemical building block for the manufacture of fine chemicals or fuel additives, and can be directly used as fragrances, food additives, gasoline additives and biological liquid fuel, etc. [0003] Biomass is an important renewable resource, and the preparation of important chemical platform compounds from biomass resources has become an important research topic in the chemical industry. The main components in biomass are cellulose and hemicellulose, accounting for about 70wt.%, which are sustainable sources of fuels and chemicals. However, how to selectively convert these macroscopic carbohydrate polymers into methyl levulinate remains a great challenge. Through acid-catalyzed su...

Claims

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Application Information

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IPC IPC(8): C07C67/00C07C69/716
CPCC07C67/00C07C69/716
Inventor 章展铭胡勋贾鹏张晨霆张旭薛秉睿
Owner UNIV OF JINAN
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