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An electrolysis–displacement–distillation approach for the production of Li, Mg, Ca, Sr, and Ba metals.
- Source :
-
Green Chemistry . 3/7/2024, Vol. 26 Issue 5, p2763-2772. 10p. - Publication Year :
- 2024
-
Abstract
- Green metal-electrode batteries call for the clean production of s-block metals. Herein, we developed an electrolysis–displacement–distillation (EDD) approach for producing s-block metals with low-carbon emissions and no chlorine gas evolution. The clean production stems from the choice of a molten NaCl–Na2CO3 electrolyte to prevent chlorine gas evolution, an inert nickel-based anode to produce oxygen, and a liquid metal cathode to make the cathodic product (e.g., Na–Sn) sit at the bottom of the electrolytic cell. Later, M–Sn (M = Li, Mg, Ca, Sr, and Ba) alloys were successfully prepared by a displacement reaction between the Na–Sn alloy and molten NaCl–LiCl, NaCl–MgCl2, NaCl–CaCl2, NaCl–SrCl2, or NaCl–BaCl2 with a displacement efficiency of >96.0%. Furthermore, Li, Mg, Ca, Sr, and Ba metals were separated from M–Sn alloys using vacuum distillation with a separation rate of >95.0%. We achieved a current efficiency of 81.0% for the electrolytic production of 100 kg of a liquid Na–Sn alloy, which holds promise to produce s-block metals at a large scale. [ABSTRACT FROM AUTHOR]
- Subjects :
- *LIQUID metals
*LIQUID alloys
*METALS
*ELECTROLYTIC cells
*GREEN business
Subjects
Details
- Language :
- English
- ISSN :
- 14639262
- Volume :
- 26
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Green Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 175824691
- Full Text :
- https://doi.org/10.1039/d3gc03349j