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Real-time in-situ monitoring of the topotactic transformation of TlCu3Se2 into TlCu2Se2
- Source :
- Journal of Alloys and Compounds. 637:321-325
- Publication Year :
- 2015
- Publisher :
- Elsevier BV, 2015.
-
Abstract
- The solid state transformation of monoclinic TlCu 3 Se 2 into tetragonal TlCu 2 Se 2 by oxidative copper leaching in concentrated ammonia solution has been studied in situ by the use of synchrotron radiation. The diffraction patterns of parent and daughter phase are both sharp, indicating a strong topotactic relationship between them that effectuates a rapid change by “chimie douce” performed at +19 °C. The transformation rate is strongly connected to the access of oxygen from the surrounding air. The transformation was followed in a real-time mode, being almost complete after 2.5 h with 1 h incubation due to low oxygen content, as shown from refining the diffraction patterns by Rietveld profile technique.
Details
- ISSN :
- 09258388
- Volume :
- 637
- Database :
- OpenAIRE
- Journal :
- Journal of Alloys and Compounds
- Accession number :
- edsair.doi...........c312d47247dc3531f6211e08f6036058
- Full Text :
- https://doi.org/10.1016/j.jallcom.2015.02.180