Cr-Mn bimetallic functionalized USY zeolite monolithic catalyst for direct production of 2, 5-Furandicarboxylic acid from raw biomass

The production of biomass-based 2, 5-furandicarboxylic acid occupies a vital position in biorefining. Here, Cr-Mn bimetallic supported Ultra-stabilized Y (USY) zeolite monolithic catalyst was prepared by the impregnation method, which aimed to direct catalyze the production of 2, 5-Furandicarboxylic acid (FDCA) from raw material biomass. The yield of FDCA could reach 67% with optimum conditions, and the catalyst has stable recyclability. Characterization analysis showed that the coordination of Cr and Mn increased oxygen mobility. The combination of bimetals is the key to produce FDCA efficiently in the absence of noble metals. In addition, we found that the presence of metal elements in the raw biomass could act as Lewis acid catalysts in the preparation of FDCA, and showed a positive effect. This Cr-Mn/USY monolithic catalyst provided new insights for the production of FDCA and the utilization of lignocellulosic biomass raw materials, which has promising prospects.