Nitrogen doped carbon spheres with wrinkled cages for the selective oxidation of 5-hydroxymethylfurfural to 5-formyl-2-furancarboxylic acid

Abstract

Nitrogen doped carbon spheres with wrinkled cages exhibited high catalytic activity and selectivity in the oxidation of 5-hydroxymethylfurfural to 5-formyl-2-furancarboxylic acid using TBHP as the oxidant.

Solvent-Free Production of ε-Caprolactone from Oxidation of Cyclohexanone Catalyzed by Nitrogen-Doped Carbon Nanotubes

“…N dopants with diverse configurations in the carbon skeleton were reported to be responsible for the catalytic activity in electrochemical reactions, selective oxidations, hydrochlorination reactions, dehydrogenation reactions, and so forth. ,− In those studies, the correlation between activity and the amount of specific type of N dopants were helpful to understand the intrinsic role of specific type of N dopants on catalysis. For instance, Gupta et al reported that the catalytic efficiency of glycerol oxidation was well described by the amount of pyridinic nitrogen (N P ) in a linear correlation .…”

Crystal Faces‐Tailored Oxygen Vacancy in Au/CeO2 Catalysts for Efficient Oxidation of HMF to FDCA

“…Moreover, the adsorption experiments also indicate that all the Au/CeO 2 samples show the higher HMF adsorption ability than pure CeO 2 samples (Figure S15 and Table S3). According to the active oxygen species capture experiments, the catalytic performance of the control group with p ‐benzoquinone is obviously lower than that of the control with tert ‐butanol and the standard oxygen reaction over Au/rod‐CeO 2 catalyst (Figure S17a, 46.74 vs. 9.40 %) [47,48] . These results indicate that superoxide radical (O 2 .− ) is the main reactive oxygen species, which is formed by interaction between oxygen adsorption and electrons (Figure S17b) [2] .…”

“…According to the active oxygen species capture experiments, the catalytic performance of the control group with p-benzoquinone is obviously lower than that of the control with tert-butanol and the standard oxygen reaction over Au/rod-CeO 2 catalyst (Figure S17a, 46.74 vs. 9.40 %). [47,48] These results indicate that superoxide radical (O 2 *À ) is the main reactive oxygen species, which is formed by interaction between oxygen adsorption and electrons (Figure S17b). [2] Therefore, the electron density of occupied 4f orbital is related to the concentration of V O , which depended on exposed crystal faces of CeO 2 -based catalysts.…”

(Chemo)biocatalytic Upgrading of Biobased Furanic Platforms to Chemicals, Fuels, and Materials: A Comprehensive Review

“…Presently, catalysts capable of the selective synthesis of FFCA remain limited, regardless of whether they are chemical or biological. Thermocatalytic conversion of HMF over metal-based and metal-free catalysts was described for producing FFCA at more than 100 °C. − Notably, Wu and co-workers reported an effective and selective method for the HMF oxidation using H 2 O 2 under relatively mild conditions (e.g., 75 °C) in water, based on activated carbon-supported ruthenium; FFCA was obtained in 92% yield with a HMF/catalyst ratio of 50 in 1 h . Visible light-fueled conversion of HMF to FFCA over graphitic carbon nitride (g-C 3 N 4 )/NaNbO 3 was reported in water, with the HMF conversion of approximately 36% and the FFCA selectivity of 87% .…”