1. A Study of Graphene-Based Copper Catalysts: Copper(I) Nanoplatelets for Batch and Continuous-Flow Applications
- Author
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Leonardo Degennaro, Renzo Luisi, Ana González, Asier Goñi, Giuseppe Romanazzi, José Luis Aceña, Alejandro de la Esperanza, M. Belén Cid, Raquel Sainz, Sonia De Angelis, Claudia Carlucci, Alessandra Triminì, Valentina Petrelli, Mario Franco, and Rafael Ferritto
- Subjects
Oxide ,Nanoparticle ,010402 general chemistry ,Heterogeneous catalysis ,01 natural sciences ,Biochemistry ,Catalysis ,law.invention ,chemistry.chemical_compound ,law ,Graphite ,Addition reaction ,010405 organic chemistry ,Chemistry ,Graphene ,Click chemistry ,Organic Chemistry ,Meerwein arylation ,graphene ,General Chemistry ,copper ,heterogeneous catalysis ,nanoparticles ,0104 chemical sciences ,Chemical engineering - Abstract
The use of graphene derivatives as supports improves the properties of heterogeneous catalysts, with graphene oxide (GO) being the most frequently employed. To explore greener possibilities as well as to get some insights into the role of the different graphenic supports (GO, rGO, carbon black, and graphite nanoplatelets), we prepared, under the same standard conditions, a variety of heterogeneous Cu catalysts and systematically evaluated their composition and catalytic activity in azide-alkyne cycloadditions as a model reaction. The use of sustainable graphite nanoplatelets (GNPs) afforded a stable CuI catalyst with good recyclability properties, which are compatible with flow conditions, and able to catalyze other reactions such as the regio- and stereoselective sulfonylation of alkynes (addition reaction) and the Meerwein arylation (single electron transfer process).
- Published
- 2019