Author, as appears in the article.: Delgado, Jorge A; Benkirane, Olivia; Lachaux, Suzanne; Claver, Carmen; Ferre, Joan; Curulla-Ferre, Daniel; Godard, Cyril
Department: Química Física i Inorgànica
URV's Author/s: Claver Cabrero, Maria del Carmen Orosia / Ferré Baldrich, Joan / Godard, Cyril
Keywords: 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
Abstract: 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.
Thematic Areas: Renewable energy, sustainability and the environment Nanoscience & nanotechnology Materials science, multidisciplinary Materials chemistry Energy engineering and power technology Chemistry, multidisciplinary Biomaterials
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: cyril.godard@urv.cat joan.ferre@urv.cat carmen.claver@urv.cat
Author identifier: 0000-0001-5762-4904 0000-0001-6240-413X 0000-0002-2518-7401
Record's date: 2024-10-12
Papper version: info:eu-repo/semantics/acceptedVersion
Link to the original source: https://onlinelibrary.wiley.com/doi/abs/10.1002/cnma.202200058
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Chemnanomat. 8 (5): e202200058-
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
Article's DOI: 10.1002/cnma.202200058
Entity: Universitat Rovira i Virgili
Journal publication year: 2022
Publication Type: Journal Publications