Тип публикации: статья из журнала
Год издания: 2008
Идентификатор DOI: 10.3103/S1067821208020041
Ключевые слова: Atomic absorption, Chloride solutions, Inert atmospheres, Oxide phasis, Oxyhydroxides, Solid samples, X-ray amorphous, X-ray phase analysis, Atomic emission spectroscopy, Chlorine compounds, Lead, Lead oxide, Nickel, Photoelectrons, Thermogravimetric analysis, X ray photoelectron spectroscopy, Nitration
Аннотация: Using the methods of X-ray photoelectron spectroscopy (XPES), X-ray phase analysis, gamma-resonance (Mossbauer) spectroscopy, thermogravimetry of solid samples and atomic absorption, and atomic emission spectroscopy for solutions, the forms of occurrence of nonferrous metals in oxyhydroxide sediments (nitration hydroxides, NH) fromПоказать полностьюnitration of refining of rhodium, iridium, and ruthenium are investigated. According to the XPES data, nitration hydroxides involve oxidized and unoxidized (selenium) transition metals, namely, Fe(III), Sn(II), Te(IV), Cu(I), Cu(II), Ni(II), Pb(II), As(III), Se(0), and Se(IV), as well as nonmetals O, Cl, and C. All nitration hydroxides are formed mainly by an X-ray amorphous phase (> 90%). During heating of nitration hydroxides up to t = 900 degrees C in an inert atmosphere, dehydration of hydroxides and crystallization of certain phases take place, but the X-ray amorphous phase amounts to more than 50%. Purely oxide phases or mixed oxide phases Fe(3)O(4), SnO(2), Cu(I)Fe(III)O(2), and Pb(2)O(3) (NH-1); Ni(0.4)Fe(2.6)O(4), Cu(I)Fe(III)O(2), and CuNiSnO(4) (NH-2); and Fe(3)O(4), Fe(2)O(3), and SnO(2) (NH-3) are formed in this case.
Журнал: RUSSIAN JOURNAL OF NON-FERROUS METALS
Выпуск журнала: Vol. 49, Is. 2
Номера страниц: 86-90
ISSN журнала: 10678212
Место издания: NEW YORK
Издатель: ALLERTON PRESS INC