"Black mass", namely, the mixture of anodic and cathodic materials arising from mechanical shredding of spent Li-ion batteries (LIBs), can be easily converted into an efficient heterogeneous catalyst for selective reductions. Here, we demonstrate a concept showing how LIBs, after appropriate thermal treatments, can be directly used as catalysts for the selective hydrogenation of biobased furfural and other biomass-derived aldehydes and ketones. Yet, the approach is general and can be applied to a variety of substrates under widely different conditions. The production of the new catalyst involves a simple calcination of the e-waste material followed by reduction with H2 at 500 °C. Complete conversion of furfural into furfuryl alcohol is achieved after 90 min at 120 °C under 10 bar H2 in 2-propanol. High furfural conversion can also be obtained under transfer hydrogenation conditions by using 2-propanol as a solvent/H-donor. The study opens the route to the use and recycle of spent LIBs as valued raw materials of precious catalytic materials suitable for use in fine chemical production.

Direct Reuse of Spent Lithium-Ion Batteries as an Efficient Heterogeneous Catalyst for the Reductive Upgrading of Biomass-Derived Furfural

Paone E.
;
Malara A.
;
Frontera P.;Mauriello F.
2022

Abstract

"Black mass", namely, the mixture of anodic and cathodic materials arising from mechanical shredding of spent Li-ion batteries (LIBs), can be easily converted into an efficient heterogeneous catalyst for selective reductions. Here, we demonstrate a concept showing how LIBs, after appropriate thermal treatments, can be directly used as catalysts for the selective hydrogenation of biobased furfural and other biomass-derived aldehydes and ketones. Yet, the approach is general and can be applied to a variety of substrates under widely different conditions. The production of the new catalyst involves a simple calcination of the e-waste material followed by reduction with H2 at 500 °C. Complete conversion of furfural into furfuryl alcohol is achieved after 90 min at 120 °C under 10 bar H2 in 2-propanol. High furfural conversion can also be obtained under transfer hydrogenation conditions by using 2-propanol as a solvent/H-donor. The study opens the route to the use and recycle of spent LIBs as valued raw materials of precious catalytic materials suitable for use in fine chemical production.
5-Hydroxymetyl furfural
Black mass
Catalytic transfer hydrogenation
Circular economy
Cobalt
Furfural
Heterogeneous catalysis
Hydrogenation
Nickel
Spent lithium-ion batteries
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12318/118880
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