The rearrangement of furan rings for beneficial chemical compounds is a vital subject for biomass conversion. On this examine, 2,5-di(hydroxymethyl)furan (BHMF) was selectively transformed to 6-methyldihydro-2H-pyran-3(4H)-one (MDPO) and 1-hydroxy-2,5-hexanedione (HHD) beneath atmospheric H2 stress in water. The selectivity to MDPO or HHD might be regulated by a catalyst. The parameters (temperature, pH, catalyst loading, and BHMF focus) for the transformation of BHMF have been studied. The selectivity for the transformation of BHMF was very delicate to the response situations, particularly for the conversion of BHMF to MDPO. 68% selectivity to MDPO on Pd/C and 72% selectivity to HHD on Rh/C have been achieved beneath the optimized situations. Each Pd/C and Rh/C might be reused at the least 5 occasions with out the lack of exercise. The contemporary and used Pd/C and Rh/C have been characterised by XRD, XPS, SEM, TEM, EDS mappings and ICP-OES to check the adjustments in the course of the response. The response course of was studied via managed experiments, and 6-methylene-2H-pyran-3(6H)-one (MEPO) and 6-hydroxy-6-methyl-2H-pyran-3(6H)-one (HMPO) have been recognized as intermediates. An affordable response mechanism was proposed and the totally different selectivity to MDPO and HHD was properly defined based mostly on the managed experiments and DFT calculations. The conditional sensitivity for the selectivity to MDPO and HHD may be interpreted by the proposed response pathway.
