Dimethyl carbonate solvent assisted efficient conversion of lignocellulosic biomass to 5- hydroxymethylfurfural and furfural

Extraction of 5-Hydroxymethylfurfural and Furfural in Aqueous Biphasic Systems: A COSMO-RS Guided Approach to Greener Solvent Selection

“…DMC in this work was observed to have a logarithmic partition coefficient of −0.06 ( K HMF = 0.94), which indicates unfavorable partitioning for the purpose of separation from the aqueous phase. However, success has been reported by numerous works where the value of DMC as a green bioderived solvent is identified, with high stability and little interference with the HMF molecule, although partition coefficients were not presented in the work . Sayed et al presented a logarithmic partition coefficient of 0.18 ( K HMF = 1.20) for DMC at 295 K, comparable to those experimentally determined in this work with a continuous production method of fructose dehydration toward HMF .…”

Sustainable valorisation of renewables through dialkyl carbonates and isopropenyl esters

“…DMC was employed as both solvent and carbonating agent, due to its partial decomposition promoted by AlCl 3 and HCl as acid catalysts. Upon optimization, the maximum yield of 5-HMF and furfural from various biomass feedstocks was recorded as 35-60% and 61-98%, respectively, upon heating the mixture in a pressurized hydrothermal steel container at T = 180 °C for t = 6 h. 104 Aricò and co-workers reviewed the main applications of DACs as green reagents and solvents for the synthesis of several 5-and 6-membered heterocycles (e.g. tetrahydrofuran, furans, pyrrolidines, indolines, isoindolines, 1,4-dioxanes, piperidines, cyclic carbamates).…”

“…DMC was employed as both solvent and carbonating agent, due to its partial decomposition promoted by AlCl 3 and HCl as acid catalysts. Upon optimization, the maximum yield of 5-HMF and furfural from various biomass feedstocks was recorded as 35–60% and 61–98%, respectively, upon heating the mixture in a pressurized hydrothermal steel container at T = 180 °C for t = 6 h. 104…”

Recent Advances in Zeolites‐Catalyzed Biomass Conversion to Hydroxymethylfurfural: The Role of Porosity and Acidity

“…[35] 5-HMF and furfural, among the top 10 valuable molecules extracted from lignocellulosic biomass, serve as essential intermediates for the formation of high-valueadded chemicals such as synthetic biopolymers, biodiesel, and fragrances. [36] By combining dilute acid/base-assisted pretreatment and catalytic conversion treatment, efficient production of 5-HMF from raw lignocellulosic biomass has been achieved. [37] While cellulose formate shows great potential for producing 5-HMF, the direct formylation of cellulose in formic acid is a complex process that poses safety risks due to the need to handle high concentrations of formic acid under high-pressure conditions with specialized equipment.…”

“…Lignocellulosic biomass is a renewable resource widely distributed in nature, which contains significant amounts of cellulose (40–50 %), hemicellulose (20–40 %), and lignin (18–35 %), making it a promising source for the production of valuable chemicals [35] . 5‐HMF and furfural, among the top 10 valuable molecules extracted from lignocellulosic biomass, serve as essential intermediates for the formation of high‐value‐added chemicals such as synthetic biopolymers, biodiesel, and fragrances [36] . By combining dilute acid/base‐assisted pretreatment and catalytic conversion treatment, efficient production of 5‐HMF from raw lignocellulosic biomass has been achieved [37] …”