Synthesis of acetal (1,1-diethoxyethane) from ethanol and acetaldehyde over acidic catalysts

Artículo

Autoría:

Capeletti, Maria Rosa ; Abovsky, Leandro ; de la Puente, Gabriela ; LABORDE, MIGUEL ANGEL ; SEDRAN, ULISES ANSELMO

Fecha:

2000

Editorial y Lugar de Edición:

Elsevier Science

Revista:

APPLIED CATALYSIS A-GENERAL, vol. 198 (pp. 1-4) Elsevier Science

Resumen

Various acidic catalysts (zeolitic and amorphous FCC catalysts, mordenite, montmorillonite, and sulfonic ion exchange resin) were tested for the synthesis of acetal from ethanol and acetaldehyde, at 4 and 20C and atmospheric pressure in batch stirred reactors. All the catalysts were active, but the exchange resin showed amuch better performance than the other catalysts, since it quickly reached equilibrium ethanol conversion values. The resin was also tested under different pressures and catalyst to reactants ratios. Clear relationships between the catalyst activity, the amount of acidity and the physical properties of the catalysts were not apparent. A possible reaction mechanism suggests that protonic acid sites are necessary. Water, a reaction product, seems to have an inhibitory effect on the reaction rate.

Palabras Clave

Acidic catalystsAcetalSulfonic resinAcetaldehydeEthanol

Descargue o solicite el texto completo:

http://hdl.handle.net/11336/37075