Defect structure and related properties of mayenite Ca12Al14O33 / Tsvetkov D.S., Steparuk A.S., Zuev A.Y. // Solid State Ionics. - 2015. - V. 276, l. . - P. 142-148.

ISSN:

01672738

Type:

Article

Abstract:

Abstract For the first time, the defect structure of mayenite was developed on the basis of conventional Kröger-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 - δ 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. © 2015 Elsevier B.V. All rights reserved.

Author keywords:

Defect structure; Hydration; Mayenite; Oxide ion conductivity; Oxygen nonstoichiometry; Total conductivity

Index keywords:

Calcium; Defect structures; Defects; Equilibrium constants; Hydration; Oxygen; Hydration/dehydration; Mayenite; Oxide-ion conductivity; Oxygen non-stoichiometry; Quasi-chemical; Aluminum

DOI:

10.1016/j.ssi.2015.04.003

Смотреть в Scopus:

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84928740275&doi=10.1016%2fj.ssi.2015.04.003&partnerID=40&md5=d7c67a7ffd94c2da6e8031148ca8094f

Соавторы в МНС:

Другие поля

Поле	Значение
Art. No.	13644
Link	https://www.scopus.com/inward/record.uri?eid=2-s2.0-84928740275&doi=10.1016%2fj.ssi.2015.04.003&partnerID=40&md5=d7c67a7ffd94c2da6e8031148ca8094f
Affiliations	Department of Chemistry, Institute of Natural Sciences, Lenin Av. 51, Ekaterinburg, Russian Federation
Author Keywords	Defect structure; Hydration; Mayenite; Oxide ion conductivity; Oxygen nonstoichiometry; Total conductivity
Funding Details	13-03-96118, RFBR, Russian Foundation for Basic Research
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Correspondence Address	Tsvetkov, D.S.; Department of Chemistry, Institute of Natural Sciences, Lenin Av. 51, Russian Federation
Publisher	Elsevier
CODEN	SSIOD
Language of Original Document	English
Abbreviated Source Title	Solid State Ionics
Source	Scopus