Premium
From Electronic Waste to Suzuki−Miyaura Cross‐Coupling Reaction in Water: Direct Valuation of Recycled Palladium in Catalysis
Author(s) -
Lacanau Valentin,
Bonneté Françoise,
Wagner Patrick,
Schmitt Martine,
Meyer Daniel,
Bihel Frédéric,
ContinoPépin Christiane,
Bourgeois Damien
Publication year - 2020
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.202001155
Subject(s) - palladium , catalysis , leaching (pedology) , aqueous solution , aqueous two phase system , coupling reaction , chemistry , materials science , organic chemistry , environmental science , soil science , soil water
From electronic waste to Pd‐catalyzed reaction! The straightforward valuation of palladium recovered from electronic waste is reported here. Following a classical leaching stage, palladium is selectively extracted from a complex aqueous mixture of metallic cations into an organic phase. Afterwards, the judicious choice of a surfactant enables stabilization of palladium during back extraction cycles, and the direct preparation of an aqueous micellar solution, which can be employed in a model Suzuki−Miyaura cross‐coupling reaction. Clean phase separation is observed, and distribution of all components between organic and aqueous phases is mastered. The proposed process avoids several waste generating steps dedicated to palladium isolation and ultimate purification, as well as the preparation of palladium pre‐catalyst. This novel approach enables a better use of both natural resources and industrial wastes, through new cycles in circular economy.