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A General One-Pot Methodology for the Preparation of Mono- and Bimetallic Nanoparticles Supported on Carbon Nanotubes: Application in the Semi-hydrogenation of Alkynes and Acetylene |
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| Authors: | Diego A Lomelí-Rosales Dr Jorge A Delgado Dr Miriam Díaz?de?los?Bernardos Dr Sara Pérez-Rodríguez Dr Aitor Gual Prof Carmen Claver Prof Cyril Godard |
| Institution: | 1. Departamento de Química, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Blvd. Marcelino García Barragán 1421, CP, 44430 Guadalajara, Jalisco, México;2. Centre Tecnològic de la Química, C/Marceli Domingo, 43007 Tarragona, Spain;3. Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, C/Marceli Domingo 1, 43007 Tarragona, Spain |
| Abstract: | A facile and straightforward methodology for the preparation of monometallic (copper and palladium) and bimetallic nanocatalysts (NiCu and PdCu) stabilized by a N-heterocyclic carbene ligand is reported. Both colloidal and supported nanoparticles (NPs) on carbon nanotubes (CNTs) were prepared in a one-pot synthesis with outstanding control on their size, morphology and composition. These catalysts were evaluated in the selective hydrogenation of alkynes and alkynols. PdCu/CNTs revealed an efficient catalytic system providing high selectivity in the hydrogenation of terminal and internal alkynes. Moreover, this catalyst was tested in the semi-hydrogenation of acetylene in industrially relevant acetylene/ethylene-rich model gas feeds and showed excellent stability even after 40 h of reaction. |
| Keywords: | acetylene alkynes heterocycles nanoparticles selective hydrogenation |