Author, as appears in the article.: Gebrestadik, Fiseha B.; Llorca, Jordi; Salagre, Pilar; Cesteros, Yolanda;
Department: Química Física i Inorgànica
URV's Author/s: Cesteros Fernández, Yolanda / Salagre Carnero, María Pilar
Keywords: Transformation Supported catalysts Rhenium Polyols Nickel Hydrogenolysis Hydrogenation Heterogeneous catalysts Glycerol hydrogenolysis Cyclic ethers Copper Conversion Chemicals Bifunctional catalyst Additives
Abstract: Ni and Cu mono- and bimetallic catalysts modified with various types of acid oxides MOx (M=Mo, V, W, and Re) were tested for the hydrogenolysis of glycidol as an alternative route to the hydrogenolysis of glycerol to obtain 1,3-propanediol (1,3-PrD). Characterization results revealed that the presence of modifiers affected the dispersion and reducibility of the NiO particles and the strength and amount of acid sites. Among the modifiers tested, Re led to the highest activity, a high propanediols selectivity, and the highest 1,3-PrD/1,2-propanediol (1,2-PrD) ratio. The Ni-Cu/Re ratio was optimized to improve the catalytic activity. The best catalytic result, with a 46% 1,3-PrD yield and a 1,3-PrD/1,2-PrD ratio of 1.24, was obtained if the monometallic Ni catalyst at 40wt% loading and modified with 7wt% Re was used at 393K and 5MPa H-2 pressure after 4h of reaction. The overall 1,3-PrD yield starting from glycerol and assuming a two-step synthesis (glycerolglycidol1,3-PrD) and a yield of 78% for the first step would be 36%. This 1,3-PD yield is the highest for a reaction catalyzed by a non-noble metal and is comparable to the direct hydrogenolysis of glycerol using noble metal catalysts at a longer time and a high H-2 pressure.
Thematic Areas: Química Physical and theoretical chemistry Organic chemistry Medicina i Materiais Interdisciplinar Inorganic chemistry Farmacia Engenharias iv Engenharias iii Engenharias ii Engenharias i Ciências biológicas ii Ciências ambientais Ciências agrárias i Ciência de alimentos Chemistry, physical Catalysis Biotecnología Astronomia / física
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: yolanda.cesteros@urv.cat
Author identifier: 0000-0002-5439-9358
Record's date: 2024-09-07
Papper version: info:eu-repo/semantics/acceptedVersion
Link to the original source: https://chemistry-europe.onlinelibrary.wiley.com/doi/full/10.1002/cctc.201700536
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Chemcatchem. 9 (19): 3670-3680
APA: Gebrestadik, Fiseha B.; Llorca, Jordi; Salagre, Pilar; Cesteros, Yolanda; (2017). Hydrogenolysis of Glycidol as an Alternative Route to Obtain 1,3-Propanediol Selectively Using MOx-Modified Nickel-Copper Catalysts Supported on Acid Mesoporous Saponite. Chemcatchem, 9(19), 3670-3680. DOI: 10.1002/cctc.201700536
Article's DOI: 10.1002/cctc.201700536
Entity: Universitat Rovira i Virgili
Journal publication year: 2017
Publication Type: Journal Publications