Author, as appears in the article.: Salagre, P.; Gebretsadik, F.B.; Ruiz-Martinez, J.; Cesteros, Y.
Department: Química Física i Inorgànica
URV's Author/s: SALAGRE CARNERO, MARÍA PILAR; Gebretsadik, F.B.; Ruiz-Martinez, J.; CESTEROS FERNÁNDEZ, YOLANDA
Keywords: Glycidol Bifunctional catalysis Hydrogenolysis
Abstract: This study explores the use of glycidol, as alternative to glycerol, to improve the selectively to 1,3-propanediol (PrD) by hydrogenolysis. The reaction was performed using Ni (with different Ni wt %) supported on an acid delaminated saponite catalysts which are cheaper compared to the expensive catalysts needed to favor the 1,3-PrD formation by glycerol hydrogenolysis. An increase in metallic area and a decrease in the catalyst acidity resulted in higher conversion and selectivity to propanediols (1,2- + 1,3-PrD). An acid activation of glycidol during hydrogenolysis promoted the 1,3-PrD formation and increased the 1,3-PrD/1,2-PrD ratio. For the catalyst prepared with 40 wt % Ni loading, an increase in the reaction temperature to 423 and 453 K led to higher 1,3-PrD/1,2-PrD ratio. The highest 1,3-PrD yield (29%) and 1,3-PrD/1,2-PrD ratio (0.97) at total conversion were obtained at 453 K, after 1 h. The overall 1,3-PrD yield from glycerol, assuming a two-step synthesis (Glycerol Glycidol 1,3-PrD) and a yield of 78% for the first step, should be around 23%. This value is comparable to that reported for the hydrogenolysis of glycerol using noble metal catalysts.
Research group: Materials Catalítics en Química Verda
Thematic Areas: Química Química Chemistry
licence for use: https://creativecommons.org/licenses/by/3.0/es/
ISSN: 0926-860X
Author identifier: 0000-0003-3257-2022; ; ; 0000-0002-5439-9358
Record's date: 2018-03-15
Last page: 98
Journal volume: 538
Papper version: info:eu-repo/semantics/submittedVersion
Funding program: plan; CTQ2011-24610
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Entity: Universitat Rovira i Virgili
Journal publication year: 2017
First page: 91
Publication Type: Article Artículo Article
Repositori URV