Acoustic Emission during Leaching of Pr6O11 in Dilute Acetic Acid

In the course of the selective dissolution (leaching) of an intermediate praseodymium oxide, Pr6O11, in contact with a dilute acetic acid solution, it is possible to record an ultrasonic acoustic emission. When the chemical reaction is taking place the solid material loses Pr3+ ions to the solution...

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Bibliographic Details
Published inJournal of solid state chemistry Vol. 107; no. 1; pp. 179 - 185
Main Authors Gasgnier, M., Derouet, J., Albert, L., Beaury, L., Caro, P., Deschamps, M.
Format Journal Article
LanguageEnglish
Published San Diego, CA Elsevier Inc 01.11.1993
Elsevier
Subjects
Applied sciences
Chemical engineering
Crystallization, leaching, miscellaneous separations
Exact sciences and technology
Dilute solution
Acoustic emission
Lixiviation
Praseodymium Oxides
Acetic acid
Experimental study
Acidic solution
Lanthanide Oxides
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Summary:In the course of the selective dissolution (leaching) of an intermediate praseodymium oxide, Pr6O11, in contact with a dilute acetic acid solution, it is possible to record an ultrasonic acoustic emission. When the chemical reaction is taking place the solid material loses Pr3+ ions to the solution and a residue of PrO2 remains. Over the course of the experiment (nearly 12 hr) various kinds of signals were recorded. The most important and intense response occurred nearly 8 hr after the beginning of the process. The acoustic emission is tentatively explained in terms of the dissolution of parts of the grains with a high amount of Pr3+ ions, and/or discohesion or breaking of inclusions.
ISSN:0022-4596
1095-726X
DOI:10.1006/jssc.1993.1336