Szucs, ZoltanMoolman, Danie (Daniel)Verryn, Sabine Marie CharlotteZeevaart, Jan Rijn2011-03-142011-03-142010-04Szucs, Z, Moolman, D, Verryn, S & Zeevaart, JR 2010, 'The metal Rhodium does not have allotropes', Journal of Radioanalytical and Nuclear Chemistry, vol. 284, no. er 1, pp. 239-243, doi: 10.1007/s10967-010-0477-9. [http://www.springerlink.com/content/105692/]0236-57311588-2780 (online)10.1007/s10967-010-0477-9http://hdl.handle.net/2263/16043Research into a new method for separating palladium from rhodium, based on radiochemical principles, necessitated a re-investigation of the Gmelins Handbuch data indicating that Rh has allotropes. Two independent and different methods were used, which both yielded the same results; i.e. that no allotropy can be found. Non-ambient temperature X-ray diffraction (HT-XRD) did not show any difference in the diffractograms due to phase transformation of Rh-metal at elevated temperatures. Differential thermal analysis (DTA) confirmed the HT-XRD result in the temperature range of 1000–1400 C. In conclusion, the absence of allotropy of the metal rhodium was proven.en© Akadémiai Kiadó, Budapest, Hungary 2010. The original publication is available at www.springerlink.comXRDDifferential thermal analysis (DTA)AllotropyRhodiumGmelin, Leopold, 1788-1853. Gmelins Handbuch der anorganischen ChemieThermal analysisSeparation (Technology)Postprint Article