Ilmenium
Ilmenium was the proposed name for a new element found by the chemist R. Hermann in 1847.[1] During the analysis of the mineral samarskite he concluded that it does contain a element similar to niobium and tantalum. The similar reactivity of niobium and tantalum made it complicated to obtain pure samples of the metals and therefore several new elements were proposed, which later to be found were only mixtures of niobium and tantalum.
The differences between tantalum and niobium and the fact that no other similar element was present, were unequivocally demonstrated in 1864 by Christian Wilhelm Blomstrand,[2] and Henri Etienne Sainte-Claire Deville, as well as Louis J. Troost, who determined the formulas of some of the compounds in 1865[2][3] and finally by the Swiss chemist Jean Charles Galissard de Marignac[4] Although it had been proven that ilmenium is only a mixture of niobium and tantalum Hermann published articles on ilmenium for several years.[5]
References
- ^ . doi:10.1002/prac.184704001110.
{{cite journal}}: Cite journal requires|journal=(help); Missing or empty|title=(help) - ^ a b Marignac, Blomstrand, H. Deville, L. Troost und R. Hermann (1866). "Tantalsäure, Niobsäure, (Ilmensäure) und Titansäure". Fresenius' Journal of Analytical Chemistry. 5 (1): 384–389. doi:10.1007/BF01302537.
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Guptawas invoked but never defined (see the help page). - ^ Marignac, M. C. (1866). "Recherches sur les combinaisons du niobium". Annales de chimie et de physique (in French). 4 (8): 7–75.
- ^ . doi:10.1007/BF01354144.
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