Autor segons l'article: Delgado, Jorge A; Benkirane, Olivia; Lachaux, Suzanne; Claver, Carmen; Ferre, Joan; Curulla-Ferre, Daniel; Godard, Cyril
Departament: Química Física i Inorgànica
Autor/s de la URV: Claver Cabrero, Maria del Carmen Orosia / Ferré Baldrich, Joan / Godard, Cyril
Paraules clau: Selective hydrogenation Pdag nanoparticles Hhdma Bimetallic Acetylene in ethylene rich mixtures selective hydrogenation reduction performance pdag nanoparticles palladium nanoparticles nanocatalysts hhdma displacement design carbon bimetallic catalysts ag acetylene in ethylene rich mixtures
Resum: In the present paper, we report the synthesis of highly functionalized nanomaterials carefully nanoengineered to catalyze the semi-hydrogenation of acetylene in ethylene-rich mixtures. Surface functionalization and structure modification of a series of bimetallic PdAg nanoparticles was performed using HHDMA as stabilizer and alloying the active palladium phase with silver. Bimetallic PdAg NPs with adjustable Pd/Ag ratio were prepared in water through a novel one-pot methodology using hydrogen gas as a benign reducing agent and cyanide as additive. UV-Vis studies indicated the formation of the bimetallic nanostructures through a sequential displacement-galvanic reduction process mediated by cyanide. The series of colloidal NPs were deposited onto alumina and successfully applied as catalysts in the selective hydrogenation of acetylene in ethylene rich mixtures. Geometric and electronic promotion of Ag over Pd based catalysts was evidenced by the increase of the ethylene selectivity with the Ag content. The reactivity of these materials demonstrated the applicability of HHDMA stabilized NPs in a gas phase reaction of industrial interest and the success of combining several strategies for the enhancement of the alkene selectivity.
Àrees temàtiques: Renewable energy, sustainability and the environment Nanoscience & nanotechnology Materials science, multidisciplinary Materials chemistry Energy engineering and power technology Chemistry, multidisciplinary Biomaterials
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
Adreça de correu electrònic de l'autor: cyril.godard@urv.cat joan.ferre@urv.cat carmen.claver@urv.cat
Identificador de l'autor: 0000-0001-5762-4904 0000-0001-6240-413X 0000-0002-2518-7401
Data d'alta del registre: 2024-10-12
Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
Enllaç font original: https://onlinelibrary.wiley.com/doi/abs/10.1002/cnma.202200058
URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
Referència a l'article segons font original: Chemnanomat. 8 (5): e202200058-
Referència de l'ítem segons les normes APA: Delgado, Jorge A; Benkirane, Olivia; Lachaux, Suzanne; Claver, Carmen; Ferre, Joan; Curulla-Ferre, Daniel; Godard, Cyril (2022). Controlled One-pot Synthesis of PdAg Nanoparticles and Their Application in the Semi-hydrogenation of Acetylene in Ethylene-rich Mixtures. Chemnanomat, 8(5), e202200058-. DOI: 10.1002/cnma.202200058
DOI de l'article: 10.1002/cnma.202200058
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2022
Tipus de publicació: Journal Publications