One‐Pot Effective Approach to 2,5‐Diformylfuran From Carbohydrates Using MoS₂‐Decorated Carbonaceous Sugarcane Bagasse

Abstract

Exploring the transformation of carbohydrates into valuable chemicals offers a promising and eco‐friendly method for utilizing renewable biomass resources. Developing a bi‐functional, sustainable heterogeneous catalyst is of utmost importance to attain a high level of selectivity for the desired product, 2,5‐diformylfuran (DFF), in this direct conversion process. In this study, we developed a highly effective catalytic system to convert diverse carbohydrates into DFF. Our approach involved utilizing a MoS2 catalyst supported by amorphous carbon derived from sulfonated sugarcane biomass. The MoS2@SBG‐SO3H composite was successfully synthesized using a facile and highly efficient method. The transformation of fructose into DFF achieved a significant yield of 70% for 5 h at 160 °C using a one‐step and one‐pot reaction through dehydration and oxidation with oxygen. The oxidation of 5‐hydroxymethylfurfural (HMF) into DFF using MoS2@SBG‐SO3H was obtained at 94% DFF within 5 h; the activation energy was 38.3 kJ.mol‐1. The catalyst displayed convenient recovery and reusability. The direct synthesis of DFF from various carbohydrates, such as sucrose, glucose, maltose, and lactose, resulted in favorable yields. Our research provides a quick, green, and efficient process for preparing carbon‐based solid acid catalysts and DFF.