Pd Nanoparticles Immobilized on Graphene Oxide/Silica Nanocomposite: Efficient and Recyclable Catalysts for Cross-Coupling Reactions

Author(s)

Oliveira, Rafael L. ^[1] ; Oliveira, Cristine S. ^[1] ; Landers, Richard ^[2] ; Correia, Carlos R. D. ^[1]

Affiliation

^[1] Campinas Univ, Chem Inst, Caixa Postal 6154, BR-13083970 Campinas, SP - Brazil

^[2] Campinas Univ, Phys Inst, BR-13083970 Campinas, SP - Brazil

• Document type: Journal article
• Source: CHEMISTRYSELECT; v. 3, n. 2, p. 535-543, JAN 17 2018.
• Web of Science Citations: 8

Abstract

Pd nanoparticles were synthesized on non-functionalized and functionalized graphene oxide with thiol and amine groups. The resulting materials were used as recyclable catalysts to study the influence of the functional groups and compare their activity and stability to non-functionalized graphene oxide and commercial catalysts in the Heck and Suzuki reactions. The catalyst based on non-functionalized GO and commercial catalysts lost their activity quickly because of particle growth (Oswald ripening). However, the presence of functional groups reduces significantly the metal particle growth producing more efficient catalysts for the Heck and the Suzuki reactions. Moreover, the synthesized catalysts were capable of catalyzing the Heck and Suzuki reactions using different substrates, achieving good activities and selectivities in all cases. (AU)

• FAPESP's process: 14/25770-6 - New frontiers in cross-coupling reactions promoted by palladium: combining enantioselective catalysis, C-H activations, new materials and in flux reactions aiming at high efficiency and sustainability in synthetic processes
• Grantee: Carlos Roque Duarte Correia
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 15/07773-0 - Preparation of supported palladium catalysts for the Heck-Matsuda reaction enantioselective in continuous flow
• Grantee: Rafael de Lima Oliveira
• Support Opportunities: Scholarships in Brazil - Post-Doctoral