Highly efficient and selective oxidation of 5-hydroxymethylfurfural by molecular oxygen in the presence of Cu-MnO2 catalyst

Heterostructured manganese catalysts for the selective oxidation of 5‐hydroxymethylfurfural to 2,5‐diformylfuran

“…As solvent plays an important role in the oxidation of HMF to DFF, various polar protic, polar aprotic and non‐polar solvents have been reported . The various solvents, such as water, methanol, acetone, ethyl acetate and toluene were used for the oxidation of HMF with MnOx−A−U, and the results are presented in Figure .…”

“…For example, MnO 2 with the morphology of microsphere, blocky type and nanowire type rendered 8.0 and 11.0 % and 40.6 % of DFF in DMF and MeOH, respectively . When incorporating Au on MnO 2 (microsphere) and Cu on MnO 2 (nanowire type), the yield of DFF increased to 82.0 in DMF and 64.8 % in ethanol, respectively . Likewise, Fe 3 O 4 /Mn 3 O 4 and MnCO 3 yielded 82.1 and 87.0 % of DFF yield with 100 % conversion of HMF …”

“…Interestingly, alterations in the structural morphology of manganese oxide could influence the activity on the yield of DFF. For example, MnO 2 with the morphology of microsphere, blocky type and nanowire type rendered 8.0 and 11.0 % and 40.6 % of DFF in DMF and MeOH, respectively . When incorporating Au on MnO 2 (microsphere) and Cu on MnO 2 (nanowire type), the yield of DFF increased to 82.0 in DMF and 64.8 % in ethanol, respectively .…”

Advances in porous and nanoscale catalysts for viable biomass conversion

“…30d). [361][362][363] Both noble and non-noble metal-based nanocatalysts were demonstrated to be efficient for liquid phase HMF oxidation, while product selectivity could be controlled by varying the catalyst compositions and reaction conditions, as shown in Table 5. Lei et al 251 pointed out the crucial role of the particle morphology and the preferentially exposed crystal facets on the catalytic performance of Pd nanocrystals for liquid phase HMF oxidation.…”

Selective oxidation of 5-hydroxymethylfurfural into 2,5-diformylfuran over VPO catalysts under atmospheric pressure

“…How to achieve selective oxidation of HMF to prepare DFF under mild conditions, it has always been an important and challenging subject. To date, there are plenty of catalysts employed in selective oxidation of HMF into DFF, such as the manganese oxide-based material, [6][7][8] GO-related materials, 9 supported Ru catalysts [10][11][12] and vanadium-based catalysts. [13][14][15][16] Zhang et al [17][18][19] have been committed to research in this area and developed a series of catalysts with excellent catalytic activity.…”