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|Title: ||Glycerol conversion into biofuel additives by acetalization with pentanal over heteropolyacids immobilized on zeolites|
|Authors: ||Castanheiro, José|
|Editors: ||Lozano, Pedro|
|Issue Date: ||15-Apr-2020|
|Publisher: ||Catalysis Today / Elsevier|
|Citation: ||J.E. Castanheiro, J. Vital, I.M. Fonseca, A.M. Ramos, Glycerol conversion into biofuel additives by acetalization with pentanal over heteropolyacids immobilized on zeolites, Catalysis Today, 346 (2020) 76-80.|
|Abstract: ||Dodecamolydbophosphoric acid (HPMo) immobilized on USY zeolite was used as a catalyst for the acetalization of glycerol with pentanal at 70 °C. Catalysts were prepared with different amounts of heteropolyacid, and the most active sample was the HPMo2@Y catalyst (1.1 wt.%). The products of glycerol acetalization with pentanal were (2-butyl-1,3-dioxolan-4-yl)methanol, a five-member ring compound, and 2-butyl-1,3-dioxan-5-ol, a six-member ring compound. Good values of selectivity for the five-member ring compound (80–85%) were obtained with all materials. The reaction conditions were optimized using HPMo2@Y as a catalyst. The optimal conditions were determined to be 70 °C reaction temperature with 0.3 g catalyst and a 1:2.5 M ratio of glycerol to pentanal.
The catalytic stability of HPMo2@Y was studied. The acetalization of glycerol with pentanal was performed using the same sample. High catalytic activity for HPMo2@Y was observed.|
|Appears in Collections:||MED - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica|
QUI - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica
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