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摘要
The catalytic hydrogenation of 5-hydroxymethylfurfural(HMF) for preparation of 2,5-bishydroxymethylfuran(BHMF) was studied, using ethanol as hydrogen donor and solvent, and copper and zinc nanoparticles (Cu-Zn/CBD) supported by carbonized sugarcane bagasse(CBD) was used as catalyst.The effects of reaction parameters such as catalyst metal proportion, reaction temperature and reaction time on the reaction of HMF hydrogenation were investigated.The surface morphology and structure of the catalyst were characterized by XRD, SEM and TEM.The elemental valence and content of the catalyst were analyzed by XPS and ICP-OES, and mixture after reaction was analyzed by HPLC.The results showed that the bimetallic Cu-Zn/CBD catalyst exhibited higher catalytic activity than those of single metal catalyst Cu/CBD and Zn/CBD.Under the optimal conditions of the Cu/Zn mass ratio of 2 ∶ 1, the reaction temperature of 160 ℃, and the reaction time of 1.5 h, the conversion rate of HMF was 86.5%, and the yield of BHMF was 82.5% .The reusability of catalysts was excellent.After recycling for 5 times, owing to the loss of a small amount of Cu and Zn nanoparticles, the conversion rate HMF and yield of BHMF decreased to 77.3% and 76.8%, respectively. ? 2022 Editorial Board of Chemistry and Industry of Forest Products.
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