Tuning the selectivity of biomass oxidation over oxygen evolution on NiO–OH electrodes

Abstract

Electrochemical reactions powered by renewable electricity are an important means of reducing the carbon footprint of large-scale chemical processes. Here, we investigate the efficient conversion of biomass-derived 5-hydroxymethylfurfural (HMF) to...

Evolution of Carbonate‐Intercalated γ‐NiOOH from a Molecularly Derived Nickel Sulfide (Pre)Catalyst for Efficient Water and Selective Organic Oxidation

“…After CA measurement of HMF oxidation, the signal corresponding to formate (8.4 ppm) due to the degradation of FDCA. [ 76 ] Consecutively, the Faradaic efficiencies obtained for HMF oxidation is 79%, BAl oxidation is 87% and BAm oxidation is 80%. We also performed the CA of HMF oxidation for bare NF, which showed a very low current density, and after 106 min, the charge passed was only 258.9 C and the NMR revealed only 12% of FDCA formation, along with a large amount of unreacted HMF (Figures S49 and S50, Supporting Information).…”

Efficient Catalytic Conversion of 5‐Hydroxymethylfurfural to 2,5‐Furandicarboxylic Acid over Ruthenium Cluster‐Embedded Ni(OH)2 Catalyst

“…For Ni(OH) 2 , as shown in Figure 2c, the high-resolution spectrum of Ni 2p could be deconvoluted into peaks at 855.5 and 860. ChemSusChem are the satellite peaks; [5] the results show that the dominant chemical state of Ni(OH) 2 was Ni 2 + . However, for Ru/Ni(OH) 2 , the peak number increased and could be deconvoluted into six main peaks; the Ni doublets at 855.2 and 873.0 eV can be ascribed to Ni 2 + .…”

“…Therefore, as a biomass‐derived monomer, FDCA has the potential to produce next‐generation bio‐plastic for replacing fossil‐derived polyethylene terephthalate (PET) [4] . Although bio‐based ethylene glycol (EG) has already started commercial production via the fermentation route, the large‐scale production of FDCA remains a great challenge due to a variety of technical hurdles, including the lack of effective catalytic systems [5] …”

“…[4] Although biobased ethylene glycol (EG) has already started commercial production via the fermentation route, the large-scale production of FDCA remains a great challenge due to a variety of technical hurdles, including the lack of effective catalytic systems. [5] The challenge of FDCA production in large scale relies on the development of highly efficient catalysts. In thermochemical processes, HMF conversion can be achieved in strict reaction conditions (30-130 °C under 0.3-2.0 MPa of O 2 ) for the production of FDCA.…”

A high-efficiency zirconium-based single-atom catalyst for the transformation of biomass-derived 5 hydroxymethylfurfural to 2,5-bis(hydroxymethyl)furan with nearly 100% selectivity

“…As is well-known, single-atom catalysts (SACs) are the emerging research frontier in the field of heterogeneous catalysis. [65][66][67] Due to a series of unique features, such as tunable metal-coordination configurations, obvious quantumsize effects, high atom-utilization efficiencies and strong atom-substrate interactions, 68 they show splendid performance in many catalytic reactions, such as the hydrogen evolution reaction, [69][70][71] oxygen evolution reaction [72][73][74] and carbon dioxide reduction. [75][76][77] Unfortunately, SACs have been rarely employed for the TH of HMF to BHMF.…”