The Chemical Basis for Separating Recycling Materials by Pyro-Processes

Bourg, Stéphane

doi:10.1016/b978-0-12-819725-7.00220-8

Cited by 1 publication

(1 citation statement)

References 29 publications

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“…Pyrochemistry, that is used in metallurgy for decades [14][15][16] , has indeed already been applied for various waste treatment operations as illustrated by the following examples. The use of molten fluorides and molten chlorides has been proposed for nuclear waste treatment [17][18][19] . Molten carbonates have a) Also at Sorbonne Université, CNRS, laboratoire de la Molécule aux Nano-Objets : Réactivité, Interactions et Spectroscopies (MONARIS), F-75005 Paris, France proven very efficient for organic compounds degradation and have been used to treat long polymer chains, i.e.…”

Section: Introductionmentioning

confidence: 99%

Advanced design of a x-ray absorption spectroscopy setup for measuring transition metals speciation in molten carbonates, hydroxides and hydrogenosulfates

Safarzadeh

Gomes

Sirieix-Plénet

et al. 2022

Review of Scientific Instruments

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Battery recycling is currently becoming a crucial issue. One possible treatment path involves the use of molten salts. A mechanistic understanding of the underlying processes requires being able to analyze in situ speciation in molten salts at various temperatures. This can be advantageously achieved using x-ray absorption spectroscopy, the use of Quick-EXAFS facilities being particularly appropriate. Consequently, this paper presents the design and development of a new setup allowing carrying out Quick-EXAFS experiments in oxidizing molten salts at high temperatures. We describe the different components of a cell and the performance of the heating device. We illustrate the capabilities of the setup by analyzing the temperature evolution of Co speciation upon dissolution of LiCoO2, a typical battery electrode material, in molten carbonates, hydroxides, and hydrogenosulphates.

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