Construction and operation principle of a block calorimeter for determining the standard enthalpies of solid state reactions

Osadchii, Е.; Zhdanov, N.; Stolyarova, T.; Brichkina, E.

Информация о цитировании статьи получена из Web of Science, Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 25 ноября 2020 г.

Авторы: Osadchii Е., Zhdanov N., Stolyarova T., Brichkina E.
Журнал: Thermochimica Acta
Том: 691
Год издания: 2020
Издательство: Elsevier BV
Местоположение издательства: Netherlands
Первая страница: 1
Последняя страница: 5
Номер статьи: 178706
DOI: 10.1016/j.tca.2020.178706
Аннотация: The paper describes the design and operation principle of a massive block calorimeter with a vacuum shell and a water thermostat. The calorimeter is designed for determining the enthalpy of solid-state reactions under standard conditions (p = 10^5 Pa, T = 298.15 K) with metals, chalcogens and chalcogenides with the exception of reactions involving elemental sulfur. The measurement method is based on comparing the amount of heat (the work of an electric current) set for the reaction under study and the amount of heat generated or absorbed during the reaction, measured during the cooling of the system to the standard temperature. The optimal amount of the reagent mixture (1.5–2.5 g) is placed in a quartz glass ampoule which is then evacuated and sealed. The duration of the main period (heating) is 6−10 min and the total experiment time is 50−60 min. The maximum heating temperature of the sample is 1273 K.The process of determining the standard enthalpy of a solid-state reaction was studied on the example of Sb2Se3(cr) production from the elements: ΔfH0Sb2Se3 = -(127.91 ± 2.08) kJ / mol.
Добавил в систему: Бричкина Екатерина Александровна

	ИСТИНА	Войти в систему Регистрация
	ФНКЦ РР
	Главная Поиск Статистика О проекте Помощь

ИСТИНА

ФНКЦ РР

Construction and operation principle of a block calorimeter for determining the standard enthalpies of solid state reactionsстатья Исследовательская статья

Прикрепленные файлы