Earth-abundant manganese oxide nanoneedle as highly efficient electrocatalyst for selective glycerol electro-oxidation to dihydroxyacetone

Recovery and utilization of crude glycerol, a biodiesel byproduct

“…ATR can be performed with a variety of feed combinations for effective thermal management. In order to maintain a self- They utilized Gluconobacter oxydans ATCC 621 as the biocatalyst to convert glycerol into dihydroxyacetone Ripoll et al 74 Agar-immobilized Gluconobacter oxydans NBRC 14819 (Gox) was the best heterogeneous biocatalyst, reaching a quantitative production of 50 g L −1 of DHA from glycerol solely in the presence of water Jain et al 75 Using genetic engineering techniques to modify genes in Escherichia coli (E. coli) aimed at increasing DHA production, achieving a maximum theoretical yield of 6.60 g L −1 DHA Oxidation of glycerol to DHA catalyzed by the PtAuPdAg catalyst in alkaline solution; the HPLC results show that the DHA selectivity was 79.6% Huang et al 77 Cobalt borate was used as a catalyst to increase the yield of glycerol oxidation to C3 chemicals, resulting in 67% DHA in the liquid product and an average yield of 90 mmol m −2 h −1 Tran et al 78 Manganese oxide (MnO 2 ) was utilized as a catalyst for the electrocatalytic glycerol oxidation, which reached the selectivity of 46% for DHA Liu et al 79 They developed a photoelectrochemical system based on nanoporous BiVO4, producing 56 mmol gcatalyst per h of DHA at a potential of 1.2 V vs. RHE under AM 1.5 illumination (100 mW cm −2 )…”

Dihydroxyacetone: A User Guide for a Challenging Bio-Based Synthon

“…A crucial issue is the search for an electrocatalyst that would be both cost effective and sustainable [ 30 ]. Numerous recently published papers evidence a strong interest in this new way to achieve DHA synthesis for glycerol, through use of innovative catalysts [ 60 , 61 , 62 , 63 , 64 , 65 , 66 ]. However, the low glycerol concentration used, the lack of studies of the continuous flow process, and still relatively low yields and/or selectivity account for why no pilot scale studies have been reported so far [ 67 , 68 ].…”

Au@NiSx Yolk@Shell Nanostructures as Dual‐Functional Electrocatalysts for Concomitant Production of Value‐Added Tartronic Acid and Hydrogen Fuel

“…This outcome suggested that the presence of FA in the product distribution might also result from the direct C-C cleavage from glycerol via (3), which was consistent with the previous reports. [18,19] Adv. Funct.…”

“…Construction of a versatile electrolysis system that can conduct GEOR in near neutral media is therefore indispensable to the widespread deployment of this technique. Very recently, Chiang's group systematically investigated the electrocatalytic performance of various low-cost metal oxide electrocatalysts, including as CuO, [17] MnO 2 , [18] and CoO x , [19] toward GEOR in nearly neutral media. A highly valuable product, dihydroxyacetone (DHA), can be obtained, highlighting the viability of GEOR in finechemical synthesis.…”