RT Journal Article
T1 Synthesis of Glycerol Carbonate from Ethylene Carbonate Using Zinc Stearate as a Catalyst: Operating Conditions and Kinetic Modeling
A1 Alvarez Serafini, Mariana
A1 González Miranda, David
A1 Tonetto, Gabriela
A1 García-Ochoa Soria, Félix
A1 Ladero Galán, Miguel
AB With the advent of biodiesel as a substitute/additive for diesel, the production of glycerol has experienced an increase, as it is an unavoidable byproduct of the biodiesel process; therefore, novel products and processes based on this triol are being very actively researched. Glycerol carbonate emerges as an advanced humectant from glycerol and a monomer for diverse polycarbonates. Its production in high yields and amounts can be achieved through the solventless transcarbonation of glycerol with other organic carbonates driven by alkaline catalysts, standing out amongst the cyclic carbonates due to its reactivity. Here, we have studied the main operational variables that affect the transcarbonation reaction of glycerol and ethylene carbonate catalyzed by zinc stearate: catalyst concentration, reagent molar ratio, and temperature. Subsequently, an appropriate kinetic model was fitted to all data obtained at 80 ◦C and several catalyst concentrations as well as reagent molar ratios. Finally, the selected kinetic model was extended and validated by fitting it to data obtained at several temperatures, finding that the activation energy of this reaction with this catalyst is around 69.2 kJ·mol−1 . The kinetic model suggests that the reaction is bimolecular and elemental and that the process is interfacial in essence, with the catalyst dispersed in a narrow space between polar (glycerol) and nonpolar (ethylene carbonate) phases.
PB MDPI
SN 1420-3049
YR 2023
FD 2023
LK https://hdl.handle.net/20.500.14352/73413
UL https://hdl.handle.net/20.500.14352/73413
LA eng
NO Alvarez Serafini, M.; Gonzalez-Miranda, D.; Tonetto, G.; Garcia-Ochoa, F.; Ladero, M. Synthesis of Glycerol Carbonate from Ethylene Carbonate Using Zinc Stearate as a Catalyst: Operating Conditions and Kinetic Modeling. Molecules 2023, 28, 1311. https://doi.org/10.3390/molecules28031311
NO Ministerio de Ciencia, Innovación y Universidades (España)
NO Programa Iberoamericano de Ciencia y Tecnología para el Desarrollo
DS Docta Complutense
RD 10 abr 2025