A kind of catalyst for the synthesis of 5-hmf and the preparation method of 5-hmf

Abstract

The invention discloses a catalyst for 5-HMF synthesis and a preparation method of 5-HMF. The preparation method of the catalyst is as follows: adding kaolin to a dicyandiamide solution, drying after the reaction; Polymerization to obtain g-C 3 N 4 / kaolin composite material; ionic liquid was prepared by using 1-methylimidazole and 3-(chloropropyl)trimethoxysilane as raw material and toluene as solvent; g-C 3 N 4 / The kaolin composite material is added into the ionic liquid, and the anhydrous ethanol is used as the solvent, and the reaction is separated and dried to obtain g-C 3 N 4 / Kaolin-IL catalyst. Glucose, catalyst and water are mixed for heating reaction to obtain 5-HMF. The present invention combines g-C 3 N 4 / The kaolin-IL heterogeneous catalyst is used in the reaction of preparing 5-HMF with glucose as raw material, and has good catalytic activity, and the catalyst is non-toxic, non-polluting to the environment, and will not cause corrosion and damage to equipment.

Description

A kind of catalyst for 5-HMF synthesis and preparation method of 5-HMF technical field The present invention relates to catalyst synthesis field, especially relate to a kind of catalyst for 5-HMF synthesis and 5-HMF Preparation. Background technique With the continuous growth of the global economy, the reserves of fossil fuels will continue to decrease, and global warming has become the responsibility of human beings. concerns. Human beings are faced with the dual pressures of scarcity of mineral resources and environmental damage. In order to alleviate this pressure, scientific research work Investors have focused their attention on renewable energy, developing renewable energy and chemicals to replace dwindling fuels. rich Rich biomass is a very promising resource that can replace fuels and valuable chemicals. According to statistics, one year in the United States It can generate 1.3 billion tons of non-food biomass, which is equivalent to the energy of 3 bill...

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Problems solved by technology

[0006] The present invention aims to overcome the general use of inorganic acids, organic acids or salt catalysts in the synthesis of 5-HMF from glucose in the prior art, but the use of strong acid catalysts will cause corrosion to equipment and cause serious environmental pollution. All exist in a liquid state, and the regeneration of the catalyst is difficult. A catalyst for the synthesis of 5-HMF and a preparation method for 5-HMF are provided. The prepared g-C 3 N 4 / Kaolin-IL catalyst is a new type of green catalyst. It has good catalytic activity for the reaction of 5-HMF prepared from glucose, and the conversion rate of glucose is high. The preparation method of the catalyst is simple, easy to separate and recycle. The environment is pollution-free and basically does not cause corrosion to equipment

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