Gholinejad, Mohammad, Bahrami, Maedeh, Nájera, Carmen, Pullithadathil, Biji
Magnesium oxide supported bimetallic Pd/Cu nanoparticles as an efficient catalyst for Sonogashira reaction
Journal of Catalysis. 2018, 363: 81-91. doi:10.1016/j.jcat.2018.02.028
URI: http://hdl.handle.net/10045/75191
DOI: 10.1016/j.jcat.2018.02.028
ISSN: 0021-9517 (Print)
Abstract: 
PdCu bimetallic nanoparticles with a diameter of about 3 nm are prepared and supported on a polymeric vinylimidazole ligand modified magnesium oxide. This new material is characterized using different analysis such as XRD, XPS, CHNS, TEM, SEM, and EDX-mapping. PdCu supported on MgO (MgO@PdCu) exhibits high catalytic activity in the Sonogashira coupling reaction of aryl iodides, bromides and chlorides with low Pd loading (0.05–0.2 mol%). This catalyst is recovered and recycled for 11 consecutive runs preserving its catalytic activity in the model reaction of iodobenzene with phenylacetylene for at least 8 cycles. Reused catalyst is characterized with TEM, XPS and EDX showing preservation of the catalyst structure. Using hot filtration and PVP poisoning tests, the catalyst shows a heterogeneous behavior for the model reaction.
Keywords:Sonogashira, Magnesium oxide, Palladium, Copper, Supported catalyst
Elsevier
info:eu-repo/semantics/article