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Catalytic Performance of Zeolite‐Supported Vanadia in the Aerobic Oxidation of 5‐hydroxymethylfurfural to 2,5‐diformylfuran
Author(s) -
Sádaba Irantzu,
Gorbanev Yury Y.,
Kegnæs Søren,
Putluru Siva Sankar Reddy,
Berg Rolf W.,
Riisager Anders
Publication year - 2013
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201200482
Subject(s) - catalysis , chemistry , physisorption , zeolite , inorganic chemistry , selectivity , toluene , vanadium , mordenite , leaching (pedology) , nuclear chemistry , heterogeneous catalysis , dimethylformamide , solvent , organic chemistry , environmental science , soil science , soil water
The catalytic performance of zeolite‐supported vanadia catalysts was examined for the aerobic oxidation of 5‐hydroxymethylfurfural (HMF) to 2,5‐diformylfuran (DFF) in organic solvents such as N , N ‐dimethylformamide (DMF), methyl isobutyl ketone, toluene, trifluorotoluene and DMSO. Catalysts based on the four different zeolite supports H‐beta, H‐Y, H‐mordenite, and H‐ZSM‐5 with 1–10 wt % vanadia loading were prepared and characterized by nitrogen physisorption, X‐ray powder diffraction, scanning electron microscopy, ammonia temperature‐programmed desorption, Raman spectroscopy and UV/Vis spectrophotometry. The H‐beta zeolite catalysts were found to contain highly dispersed vanadium oxide species at all loadings, and provided the highest reaction selectivity towards DFF and the lowest metal leaching of the examined systems. In particular, 1 wt % V 2 O 5 /H‐beta was found to be a stable, recyclable, and non‐leaching catalyst for the production of DFF under mild conditions in DMF as solvent, although with low DFF yield. To increase the yield, oxidation of HMF at elevated pressures was also investigated with this catalyst. Under optimized conditions, a reaction selectivity towards DFF of >99 % at 84 % HMF conversion was obtained, albeit with some contribution from lixiviated species to the total catalyst activity.