关键词: 2,5-呋喃二甲酸, 5-羟甲基糠醛, 糠酸, 平台化合物, 羧基化

Abstract:

As a derivative of furan, 2,5-furandicarboxylic acid (2,5-FDCA) is a biomass-based platform compound with good stability and high additional value, which has been widely used in many fields such as polyester, polyamide, polyurethane, thermosetting materials, plasticizers, etc. How to prepare 2,5-FDCA greenly and efficiently has been paid wide attention in recent years. In this paper, starting from various biomass-derived raw materials, the methods and characteristics of synthesizing 2,5-FDCA with 5-hydroxymethylfurfural (HMF), furoic acid, and adipic acid were reviewed. The yield of other routes such as hexosedioic acid is low, which is not conducive to industrial development. The HMF route has the advantages of high yield and few by-products. However, due to the conflict between the source of raw materials and the food industry and the high production cost, the use of inedible biomass-derived raw material furoic acid to synthesize the target product at low cost will become an important research direction for future sustainable development. On this basis, after comparing the advantages and disadvantages of each route of furoic acid, it was found that the CO{}_{\mathrm{3}}^{\mathrm{2}-} promoted synthesis method of furoic acid carboxylation does not require a reaction solvent, and the catalyst component is simple and renewable, which are conducive to low-cost synthesis products. And due to the simple process flow and high product selectivity and yield, the furoic acid carboxylation method will become a highly potential route for green large-scale production of 2,5-FDCA.

Key words: 2,5-furandicarboxylic acid, 5-hydroxymethylfurfural, furoic acid, platform compound, carboxylation