Valorisation of glycerol with cinnamaldehyde over phosphotungstic acid encapsulated on NaY zeolite

• Main Author: Castanheiro, J.E.
• Publication Date: 2022
• Other Authors: Mourão, P.A.M., Cansado, I.P.P., Vital, J., Fonseca, I.M., Ramos, A.M.
• Format: Article
• Language: eng
• Source: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Download full: http://hdl.handle.net/10174/33123; https://doi.org/10.1016/j.cep.2022.108993
• topic: Glycerol; cinnamaldehyde; catalyst; phosphotungstic acid

Glycerol was reacted with cinnamaldehyde over phosphotungstic acid (PW) encapsulated on NaY at 100°C. Catalysts containing different PW contents were prepared. The activity increased with an increasing amount of PW encapsulated on NaY, and the use of the NaY-PW4 (0.121 gpw/gNaY) material resulted in a superior conversion compared to those obtained using the other materials. After 5 h, the conversion of glycerol was 89% at 100°C using 0.3 g of catalyst and a glycerol:cinnamaldehyde molar ratio of 1:2.25. Furthermore, NaY-PW4 exhibited a good catalytic stability.