Defect structure and related properties of mayenite Ca12Al14O33 / Tsvetkov D. S.,Steparuk A. S.,Zuev A. Yu. // SOLID STATE IONICS. - 2015. - V. 276, l. . - P. 142-148.

ISSN/EISSN:

0167-2738 / 1872-7689

Type:

Article

Abstract:

For the first time, the defect structure of mayenite was developed on the basis of conventional Kroger-Vink method and successfully verified using available data on its properties such as total conductivity, hydration/dehydration and oxidation/reduction. As a consequence, equilibrium constants of the quasichemical reactions of mayenite reduction and hydration were determined as a function of temperature. This allowed estimation of Ca12Al14O33 (-) (delta) enthalpy of reduction and hydration. The former was found to be equal to 360 kJ/mol while the latter was estimated as -238 kJ/mol. The defect structure model proposed enabled estimation of oxygen nonstoichiometry in mayenite. (C) 2015 Elsevier B.V. All rights reserved.

Author keywords:

Oxygen nonstoichiometry; Mayenite; Defect structure; Total conductivity; Hydration; Oxide ion conductivity 12CAO-CENTER-DOT-7AL(2)O(3); CONDUCTIVITY; ELECTRIDES; INSULATOR

DOI:

10.1016/j.ssi.2015.04.003

Web of Science ID:

ISI:000356192900018

Соавторы в МНС:

Другие поля

Поле	Значение
Month	AUG
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
EISSN	1872-7689
Keywords-Plus	12CAO-CENTER-DOT-7AL(2)O(3); CONDUCTIVITY; ELECTRIDES; INSULATOR
Research-Areas	Chemistry; Physics
Web-of-Science-Categories	Chemistry, Physical; Physics, Condensed Matter
Author-Email	Dmitry.Tsvetkov@urfu.ru
ResearcherID-Numbers	Zuev, Andrey/E-6220-2014 Tsvetkov, Dmitry/N-2491-2016
Funding-Acknowledgement	Russian Foundation for Basic Research {[}13-03-96118]
Funding-Text	This work was supported by the Russian Foundation for Basic Research (grant No. 13-03-96118).
Number-of-Cited-References	21
Usage-Count-Last-180-days	2
Usage-Count-Since-2013	29
Journal-ISO	Solid State Ion.
Doc-Delivery-Number	CK4KO