Autor según el artículo: Gebretsadik, Fiseha Bogale; Ruiz-Martinez, Javier; Gonzalez, Maria Dolores; Salagre, Pilar; Cesteros, Yolanda;
Departamento: Química Física i Inorgànica
Autor/es de la URV: Cesteros Fernández, Yolanda / González Candela, Maria Dolores / Salagre Carnero, María Pilar
Palabras clave: Xrd measurements Vinyloxirane Transformation Selective hydrogenolysis Reaction temperature Product Performance Nickel metallography Nickel Metal activity Isomerization Hydrolysis Hydrogenolysis H2-chemisorption Glycerol hydrogenolysis Effect of coppers Cyclic ethers Copper metallography Copper alloys Copper Catalysts Binary alloys Bimetallic catalysts Batch reactors Acid 1,3-propanediol 1 ,3 propanediol 1 ,2-propanediol
Resumen: The effect of copper on various acid saponite supported Ni-Cu bimetallic catalysts, prepared with different Ni : Cu ratios, was studied for the liquid phase hydrogenolysis of glycidol on a batch reactor at 393 and 453 K. Characterization of the catalysts showed that Ni and Cu are in close contact as the XRD measurements evidenced the formation of an alloy. H-2 chemisorption results revealed that the measured metallic area progressively decreased with an increase in the wt% of copper. In the presence of high metal activity (higher Ni wt%), the formation of 1,2-propanediol (1,2-PD) outweighed, while acid activity led to the formation of dimerization and oligomerization products. The addition of Cu and the increase of the reaction temperature decreased the diol formation but boosted the 1,3-PD/1,2-PD ratio. This could be explained by an improvement of the collaborative effect between the metal Ni and the H+ of the saponite. Therefore, the presence of an appropriate amount of Cu allowed the control of the hydrogenation capacity of Ni and enhanced the collaborative effect of Ni and H+ favouring the formation of 1,3-propanediol with respect to 1,2-propanediol.
Áreas temáticas: Química Odontología Medicina ii Materiais Interdisciplinar Inorganic chemistry General medicine Farmacia Ensino Engenharias iv Engenharias iii Engenharias ii Engenharias i Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Chemistry, inorganic & nuclear Biotecnología Astronomia / física
Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
Direcció de correo del autor: mdolores.gonzalez@urv.cat pilar.salagre@urv.cat yolanda.cesteros@urv.cat
Identificador del autor: 0000-0003-3257-2022 0000-0002-5439-9358
Fecha de alta del registro: 2024-07-27
Versión del articulo depositado: info:eu-repo/semantics/acceptedVersion
Enlace a la fuente original: https://pubs.rsc.org/en/content/articlelanding/2021/dt/d1dt01189h
URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
Referencia al articulo segun fuente origial: Dalton Transactions. 50 (26): 9198-9207
Referencia de l'ítem segons les normes APA: Gebretsadik, Fiseha Bogale; Ruiz-Martinez, Javier; Gonzalez, Maria Dolores; Salagre, Pilar; Cesteros, Yolanda; (2021). Cu boosting the collaborative effect of Ni and H+ in alloyed NiCu/saponite catalysts for hydrogenolysis of glycidol. Dalton Transactions, 50(26), 9198-9207. DOI: 10.1039/d1dt01189h
DOI del artículo: 10.1039/d1dt01189h
Entidad: Universitat Rovira i Virgili
Año de publicación de la revista: 2021
Tipo de publicación: Journal Publications