Preparation method for 2,5-furandimethanoldialkyl ether

Abstract

The invention discloses a preparation method for 2,5-furandimethanoldialkyl ether. According to the novel method for preparing the 2,5-furandimethanoldialkyl ether, provided by the invention, homogeneous acid catalysts including sulfuric acid and the like are not used, so that the corrosion to protection equipment and the endangering degree to human bodies are effectively reduced; and meanwhile, waste liquid and waste residues, which are produced in a production process, are reduced, so that the method is an environment-friendly novel method. Moreover, the novel method for preparing the 2,5-furandimethanoldialkyl ether, provided by the invention, has the advantages that the conversion rate of 2,5-furandimethanol and the selectivity of the 2,5-furandimethanoldialkyl ether are higher than those in the prior art.

Description

technical field [0001] The invention belongs to the field of organic synthesis, and in particular relates to a preparation method of 2,5-furandimethanol dialkyl ether. Background technique [0002] Furanylmethanol dialkyl ether is a new type of diesel additive, which can significantly increase the cetane number of diesel. The traditional synthesis method of 2,5-furandimethanol dialkyl ether is to use 5-hydroxymethylfurfural (HMF) as the substrate and prepare it through selective hydrogenation and etherification. For example, Gruter et al reported in the patent (EP2008 / 007423) that 5-hydroxymethylfurfural or 5-alkoxymethylfurfural can be converted into furandimethanol dialkyl under the condition that hydrogenation catalyst and acidic catalyst exist simultaneously ether. However, due to the high production cost of HMF, since the 1980s, HMF has not yet been industrialized. The efficient conversion and utilization of HMF has become one of the difficulties in scientific researc...

AI Technical Summary

Problems solved by technology

However, due to the high production cost of HMF, since the 1980s, HMF has not yet been industrialized. The efficient conversion and utilization of HMF has become one of the difficulties in scientific research, which has led to the development of 2,5-furan di The production and application of a series of disubstituted furan derivatives such as methanol dialkyl ether have been greatly restricted

[0003] The existing patent CN103058962A discloses a preparation method of 2,5-furandimethanol dialkyl ether, but the method in this patent uses a homogeneous acid catalyst such as sulfuric acid. The common disadvantage of these liquid catalysts is that the production equipment Corrosion candles and human health are seriously endangered, and a large amount of waste residue and waste liquid will be produced to pollute the environment