Тип публикации: статья из журнала
Год издания: 2023
Идентификатор DOI: 10.1134/s0020168523070026
Ключевые слова: lithium sodium tetragermanate, solid-state synthesis, heat capacity, thermodynamic functions, inorganic chemistry, Industrial Chemistry/Chemical Engineering, materials science, general
Аннотация: Lithium sodium tetragermanate, LiNaGe4O9, has been prepared by solid-state reaction, by sequentially firing stoichiometric mixtures of Li2CO3, Na2CO3, and GeO2 starting materials in air in the temperature range 773–1073 K. Its unit-cell parameters have been determined by X-ray diffraction: a = 4.68007(3) Å, b = 9.3220(8) Å , c = 15Показать полностью.900(2) Å, and V = 694.113 Å (Z = 4, sp. gr. Pcca). The high-temperature heat capacity of the germanate has been determined using differential scanning calorimetry in the temperature range 320–1050 K. The experimental temperature-dependent heat capacity data, Cp(T), have been used to calculate the principal thermodynamic functions of LiNaGe4O9.
Журнал: Inorganic Materials
Выпуск журнала: Т.59, №7
Номера страниц: 777-781
ISSN журнала: 00201685
Место издания: Москва
Издатель: Pleiades Publishing, Ltd. (Плеадес Паблишинг, Лтд)