Gas-phase conversion of glycerol to allyl alcohol over vanadium-supported zeolite beta

Publication date: Available online 22 April 2019Source: Catalysis CommunicationsAuthor(s): Ruben Almeida, M. Filipa Ribeiro, Auguste Fernandes, João P. LourençoAbstractVanadium oxide supported beta zeolite (Si/Al = 25, 4% V) was used as catalyst for the one-pot gas-phase conversion of glycerol to allyl alcohol without any external reductant. The catalytic data strongly suggest a consecutive reactions path involving the dehydration to acrolein over the zeolite acid sites followed by a selective reduction through a hydrogen-transfer reaction. Acidity is expected to play a major role in what concerns the selectivity, as demonstrated by the catalytic results obtained by the impregnation of vanadium on a previously Cs-exchanged sample that achieved ca. 30% selectivity to allyl alcohol at ca. 20% glycerol conversion.Graphical abstract

Source: Catalysis Communications - April 23, 2019 Category: Chemistry Source Type: research