Conversion of Rare-Earth Oxides to Halides: How to Prevent Formation of Oxyhalides?

Jacob, KT and Shreyas, Varun (2017) Conversion of Rare-Earth Oxides to Halides: How to Prevent Formation of Oxyhalides? In: Journal of Sustainable Metallurgy, 3 (4). pp. 793-796. ISSN 2199-3823

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Abstract

There is controversy regarding the formation of rare-earth oxyhalides during halogenation of rare-earth oxides. The formation of oxyhalide appears to be dependent on the conditions of experiment and the halogenating agent used. To clarify the issue, the stability field diagram for the system Nd–O–F is developed at 1200 K, showing unequivocally the stability of NdOF when both the sesquioxide and trifluoride are at unit activity. Methods to avoid the precipitation of solid NdOF and the feasibility of the process in scale-up are discussed.

Item Type:	Journal Article
Publication:	Journal of Sustainable Metallurgy
Publisher:	Springer Science and Business Media Deutschland GmbH
Additional Information:	The copyright for this article belongs to the Springer Science and Business Media Deutschland GmbH.
Keywords:	Fluorination; Rare-earth oxides; Rare-earth oxyfluorides; Recycling
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	29 May 2022 07:53
Last Modified:	29 May 2022 07:53
URI:	https://eprints.iisc.ac.in/id/eprint/72780

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