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

Link to the original source: https://www.sciencedirect.com/science/article/pii/S0926860X17301175

Funding program: plan; CTQ2011-24610

Article's DOI: 10.1016/j.apcata.2017.03.018

Entity: Universitat Rovira i Virgili

Journal publication year: 2017

First page: 91

Publication Type: Article Artículo Article