Вид документа : Статья из журнала Шифр издания : 54/S 53 Автор(ы) : Shaikhlislamova A. R., Zhuravlev N. A., Yaroslavtsev A. B. Заглавие : Li+/H+ Ion Exchange in Li3 – 2xNbxM2 – x(PO4)3 (M = In, Fe) Materials with a NASICON Structure Место публикации : Russian Journal of Inorganic Chemistry. - 2010. - Vol. 55, № 1. - С. 18-22: il. Примечания : Bibliogr. : p. 22 (13 ref.) ISSN: 0036-0236 ББК : 54 Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ Ключевые слова (''Своб.индексиров.''): ионный обмен--протонная проводимость Аннотация: H3 – 2xNbxM2 – x(PO4)3 (M = In, Fe) acid phosphates have been obtained by ion exchange from their lithium forms and X ray powder diffraction, impedance measurements, and 7Li and 1H NMR spectroscopy. The parameters of the hexagonal unit cell of the proton exchanged forms differ only slightly from those of the initial lithium compounds. According to 1H NMR data, the proton in the acid phosphates is not hydrated. The conductivity of the acid phosphates at high temperatures depends weakly on their composition and is ~1.7 × 10–7 S cm–1 at 620 K. The activation energy of conduction is 30–33 kJ/mol (430–770 K) Доп.точки доступа: Zhuravlev, N. A.; Журавлев Николай Алексеевич; Yaroslavtsev, A. B.