Rare earth discovery (2 risultati)
L'holmine (ou terre X de M. Soret) contient au moins deux radicaux métalliques. (+) Sur le dysprosium. (2 Papers).
"LECOQ de BOISBAUDRAN, PAUL ÈMILE. - RARE EARTH DISCOVERY - HOLMIUM AND DYSPROSIUM.
- Brossura
Da: Herman H. J. Lynge & Søn ILAB-ABF, Copenhagen, DanimarcaHerman H. J. Lynge & Søn ILAB-ABF
Contatta il venditoreVenditore con 4 stelleCondizione: Usato
EUR 206,67
EUR 42,00 spedizioneSpedito da Danimarca a U.S.A.Quantità: 1 disponibili
Aggiungi al carrello(Paris, Gauthier-Villars), 1886. 4to. No wrappers. In: "Comptes Rendus hebdomadaires des Séances de L'Academie des Sciences", Tome 102, No 18. Pp. (991-) 1041. (Entire issue offered). The papers: pp. 1003-1004 a. 1005-1006. First apperance of the papers in which Lecoc de Boisbaudran described how he separated Holmium into two ki…nds of earths and naming them."He accomplished this by fractional prepicitation, first with ammonium hydroxide and then with a saturated solution of potassium sulfate, and found that the constituents of pure holmium solutions precipitate in the folloeing order: terbium, dysprosium, holmium, and erbium. Lecog de Boisbaudran never had an abundant supply of raw materials for his remarkable researches on the rare earths, and he once confided to professor Urbain that most of his fractionations had been carried on on the marble slab of his fireplace."(Weeks "Discovery of the Eelements").Parkinson "Breakthroughs", 1886 C.
Sur l'ytterbine, nouvelle terre contenue dans la gadolinite.
"MARIGNAC, C. (JEAN CHARLES). - THE DISCOVERY OF THE RARE EARTH YTTERBIUM.
- Brossura
Da: Herman H. J. Lynge & Søn ILAB-ABF, Copenhagen, DanimarcaHerman H. J. Lynge & Søn ILAB-ABF
Contatta il venditoreVenditore con 4 stelleCondizione: Usato
EUR 248,01
EUR 42,00 spedizioneSpedito da Danimarca a U.S.A.Quantità: 1 disponibili
Aggiungi al carrello(Paris, Gauthier-Villars), 1878. 4to. No wrappers. In: "Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences", Tome 87, No 17. Pp. (570-) 616. (Entire issue offered). Marignac's paper: pp. 578-581. First apperance of the paper relating Marignac's discovery of the rare earth Ytterbium (Ytterbia)."He began his study… of the rare earths in 1840, when he was barely twenty-three years old. According to P.T. Cleve, "Marignac's work on the rare earths is undoubtedly the most importent in this particular department of chemistry". In 1878 marignac heated some erbium nitrate obtained from gadolinite until it decomposed. When he extracted the resulting mass with water, he obtained two oxides: a red one, for which he retained the name Erbia, and a colorless one, which he named Ytterbia." (Weeks "The Discovery of the Elements").Parkinson "Breakthroughs", 1878 C.