Transesterification of dimethyl carbonate with glycerol by perovskite-based mixed metal oxide nanoparticles for the atom-efficient production of glycerol carbonate

Simple Halogen‐Free, Biobased Organic Salts Convert Glycidol to Glycerol Carbonate under Atmospheric CO2 Pressure

“…A viable solution to avoid this slight drop in catalytic performance through the recovery stages could be to use a packed bed reactor and performing this catalytic reaction under flow as was recently demonstrated by part of us. [40] The yield and selectivity for 1 b with our biobased salts compare well with those achieved with state-of-the-art catalysts for the synthesis of 1 b from glycerol and dimethyl carbonate, [31,81,82] with the main differences being the lower atom-economy and shorter reaction times (but at higher temperatures) for these transcarbonylation processes. It is important to stress that the catalytic performance of metal alginates compare well with those reported for polymersupported organic bases under similar conditions, though being a solvent-based process.…”

“…[26] The direct synthesis of GC from glycerol and CO 2 is an attractive strategy for combining two waste molecules into a valuable product; however, the reaction is thermodynamically limited and requires harsh temperature and pressure conditions and/or the use of sacrificial reagents. [27][28][29] To increase the process efficiency, glycerol can be reacted with dimethyl carbonate (DMC), [30,31] urea, [32] or other cyclic carbonates [33] affording GC in high yields. However, these reagents are generally used in excess and in the majority of the reported cases at high reaction temperatures, [32] thereby increasing the cost and carbon footprint of the produced GC.…”

Transesterification of Glycerol to Glycerol Carbonate over Mg-Zr Composite Oxide Prepared by Hydrothermal Process

“…The results showed that there was no strong correlation between catalyst acidity and glycerol conversion. Although the role of acid sites in the activation of DMC cannot be completely ruled out, the effect of acid sites is less clear and predictable compared to the evident effect of basic sites [37].…”

Microwave-Assisted Non-aqueous and Low-Temperature Synthesis of Titania and Niobium-Doped Titania Nanocrystals and Their Application in Halide Perovskite Solar Cells as Electron Transport Layers

“… 42 , 43 The application of the non-aqueous sol–gel (NASG) route or glycothermal synthesis, involving condensation reactions of metal precursors and high-boiling alcohols to grow metal oxide NPs, was reported by Bourget et al 42 and by Niederberger et al 43 Several binary, ternary, and mixed metal oxides NPs were prepared by this method. 3 , 44 − 46 In addition, metal sulfides NPs were also prepared using a non-hydrolytic thio-sol-gelmethod. 47 , 48 This methodology yields sub-5 nm scale NPs that do not need surfactant stabilization to remain dispersed in mildly polar solvents such as ethanol or isopropanol.…”

“… 47 , 48 This methodology yields sub-5 nm scale NPs that do not need surfactant stabilization to remain dispersed in mildly polar solvents such as ethanol or isopropanol. TiO 2 and other doped or undoped oxide NPs were synthesized in the past by the NASG approach, and the obtained materials were successfully used for energy conversion, 49 gas sensing, 50 catalysis, 45 , 46 , 51 and energy storage applications. 23 , 24 Although the traditional NASG synthesis of TiO 2 -NCs is typically carried out at 80 °C under inert conditions, the particle growth is time-consuming, i.e., in general, the production of a few hundreds of milligrams of material by this technique may take 1 day or more.…”