Synergic Effect of Copper and Palladium for Selective Hydrogenation of Alkynes

Author(s)

da Silva, Fernanda P. ^[1] ; Fiorio, Jhonatan L. ^[1] ; Goncalves, V, Renato ; Teixeira-Neto, Erico ^[2] ; Rossi, Liane M. ^[1]

Affiliation

^[1] Univ Sao Paulo, Inst Quim, Dept Quim Fundamental, Av Prof Lineu Prestes 748, BR-05508000 Sao Paulo, SP - Brazil

^[2] Brazilian Ctr Res Energy & Mat CNPEM, Brazilian Nanotechnol Natl Lab LNNano, BR-13083970 Campinas, SP - Brazil

• Document type: Journal article
• Source: Industrial & Engineering Chemistry Research; v. 57, n. 48, p. 16209-16216, DEC 5 2018.
• Web of Science Citations: 3

Abstract

The design of palladium-based catalysts with improved selectivity, while maintaining high activity in hydrogenation reactions and avoiding the use of lead or ligands is still a major concern in heterogeneous catalysis. Here, a novel protocol has been proposed to prepare colloidal PdCu(y )nanoparticles with tailored metal composition, enabling a remarkable improvement in the semihydrogenation of alkynes when compared to pure Pd or a physical mixture of Cu and Pd catalysts. The PdCuy bimetallic catalyst with 1:4 Pd/Cu atom ratio showed the best performance. The synergistic effect between the closely contacting Pd and Cu species resulted in full conversion of alkyne and high alkene selectivity for a broad range of multifunctionalized substrates under very mild conditions (30 degrees C and 1 bar of H-2). (AU)

• FAPESP's process: 16/16738-7 - Study of the influence of organic ligands on the reactivity of gold nanoparticles
• Grantee: Liane Marcia Rossi
• Support Opportunities: Regular Research Grants