2026-04-14T07:41:19Zhttps://recercat.cat/oai/request

oai:recercat.cat:2072/3597762024-12-20T17:58:09Zcom_2072_300912com_2072_4427col_2072_301309

00925njm 22002777a 4500 dc Fiorio, Jhonatan Luiz author Vitalino Gonçalves, Renato author Teixeira-Neto, Erico author Ortuño, Manuel A. author López, Núria author Rossi, Liane Marcia author 2018-03-15 Pyrolysis of Au(OAc)3 in the presence of 1,10- phenanthroline over TiO2 furnishes a highly active and selective Au nanoparticle (NP) catalyst embedded in a nitrogen-doped carbon support, Au@N-doped carbon/TiO2 catalyst. Parameters such as pyrolysis temperature, type of support, and nitrogen ligands as well as Au/ligand molar ratios were systematically investigated. Highly selective hydrogenation of numerous structurally diverse alkynes proceeded in moderate to excellent yield under mild conditions. The high selectivity toward the industrially important alkene substrates, functional group tolerance, and the high recyclability makes the catalytic system unique. Both high activity and selectivity are correlated with a frustrated Lewis pairs interface formed by the combination of gold and nitrogen atoms of N-doped carbon that, according to density functional theory calculations, can serve as a basic site to promote the heterolytic activation of H2 under very mild conditions. This “fully heterogeneous” and recyclable gold catalyst makes the selective hydrogenation process environmentally and economically attractive. http://hdl.handle.net/2072/359776 https://doi.org/10.1021/acscatal.8b00806 Accessing Frustrated Lewis Pair Chemistry through Robust Gold@NDoped Carbon for Selective Hydrogenation of Alkynes