Autor según el artículo: Gebrestadik, Fiseha B.; Llorca, Jordi; Salagre, Pilar; Cesteros, Yolanda;
Departamento: Química Física i Inorgànica
Autor/es de la URV: Cesteros Fernández, Yolanda / Salagre Carnero, María Pilar
Palabras clave: Transformation Supported catalysts Rhenium Polyols Nickel Hydrogenolysis Hydrogenation Heterogeneous catalysts Glycerol hydrogenolysis Cyclic ethers Copper Conversion Chemicals Bifunctional catalyst Additives
Resumen: 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.
Áreas temáticas: 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
Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
Direcció de correo del autor: yolanda.cesteros@urv.cat
Identificador del autor: 0000-0002-5439-9358
Fecha de alta del registro: 2024-09-07
Versión del articulo depositado: info:eu-repo/semantics/acceptedVersion
Enlace a la fuente original: https://chemistry-europe.onlinelibrary.wiley.com/doi/full/10.1002/cctc.201700536
URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
Referencia al articulo segun fuente origial: Chemcatchem. 9 (19): 3670-3680
Referencia de l'ítem segons les normes 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
DOI del artículo: 10.1002/cctc.201700536
Entidad: Universitat Rovira i Virgili
Año de publicación de la revista: 2017
Tipo de publicación: Journal Publications