Glycerol carbonate synthesis over nanostructured titanate catalysts: effect of morphology and structure of catalyst.
SCHEID, Carolina Majolo; MONTEIRO , Wesley Formentin; VIEIRA, Michele Oliveira; ALBAN, Luisa; LUZA, Leandro; EBERHARDT, Dario; GONÇALVES, Renato Vitalino; FEIL, Adriano Friedrich; LIMA, Jeane Estela Ayres de; LIGABUE, Rosane Angelica.
SCHEID, Carolina Majolo; MONTEIRO , Wesley Formentin; VIEIRA, Michele Oliveira; ALBAN, Luisa; LUZA, Leandro; EBERHARDT, Dario; GONÇALVES, Renato Vitalino; FEIL, Adriano Friedrich; LIMA, Jeane Estela Ayres de; LIGABUE, Rosane Angelica.
Abstract: The indirect conversion of CO2 into glycerol carbonate using DMC was investigated using pristine sodium titanate nanotubes (NaTNT) and nanostructured titanates (calcined NaTNT at different temperatures) as catalysts. The calcination changes the morphology of the nanostructured titanates, between 200 and 400 °C the nanotubes shape is retained, however above these temperatures (500 and 600 °C) nanoribbons were identified, as well as nanorods obtained at 700 °C. A significant decrease in specific surface area and total pore size in temperatures up 500 °C was also observed. Furthermore, a decrease in the Ti+4/Ti+2 ratio and in the binding energy of Ti 2p3/2 and Ti 2p1/2 were observed, indicating an increase in the electron density and consequently increase in the Lewis acidity char- acter of the titanium atom. All the nanostructured titanates showed good catalytic activity with glycerol conversion and GC selectivity above 90%. The results of the recycling showed that the nanostructured catalysts retained a good catalytic activity with high glycerol conversion (> 90%) although the GC selectivity decreased due the formation of glycidol, a high value-added by-product.
@article={003159382,author = {SCHEID, Carolina Majolo; MONTEIRO , Wesley Formentin; VIEIRA, Michele Oliveira; ALBAN, Luisa; LUZA, Leandro; EBERHARDT, Dario; GONÇALVES, Renato Vitalino; FEIL, Adriano Friedrich; LIMA, Jeane Estela Ayres de; LIGABUE, Rosane Angelica.},title={Glycerol carbonate synthesis over nanostructured titanate catalysts: effect of morphology and structure of catalyst},journal={Chemical Engineering Research and Design},note={v. 197, p. 392-404},year={2023}}