Lomelí-Rosales Diego A, Delgado Jorge A, Díaz de Los Bernardos Miriam, Pérez-Rodríguez Sara, Gual Aitor, Claver Carmen, Godard Cyril
Departamento de Química, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Blvd. Marcelino García Barragán 1421, CP, 44430, Guadalajara, Jalisco, México.
Centre Tecnològic de la Química, C/Marceli Domingo, 43007, Tarragona, Spain.
Chemistry. 2019 Jun 21;25(35):8321-8331. doi: 10.1002/chem.201901041. Epub 2019 May 22.
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.
报道了一种简便直接的方法，用于制备由N-杂环卡宾配体稳定的单金属（铜和钯）和双金属纳米催化剂（NiCu和PdCu）。通过一锅法合成制备了碳纳米管（CNT）上的胶体和负载型纳米颗粒（NP），并对其尺寸、形态和组成进行了出色的控制。这些催化剂在炔烃和炔醇的选择性氢化反应中进行了评估。PdCu/CNT显示出一种高效的催化体系，在末端和内炔烃的氢化反应中具有高选择性。此外，该催化剂在工业相关的富含乙炔/乙烯的模型气体进料中进行乙炔半氢化反应测试，即使在反应40小时后仍表现出优异的稳定性。
