Phase transitions in mayenite

被引：9

作者：

Shkerin, S. N. ^{[1
,2
]}

Tolkacheva, A. S. ^{[1
,3
]}

Korzun, I. V. ^{[1
]}

Plaksin, S. V. ^{[1
]}

Vovkotrub, E. G. ^{[1
]}

Zabolotskaya, E. V. ^{[4
]}

机构：

[1] Russian Acad Sci, Ural Branch, Inst High Temp Electrochem, Ekaterinburg 620990, Russia

[2] Ural Fed Univ, Special Educ Sci Ctr, Ekaterinburg 620002, Russia

[3] Ural Fed Univ, Inst Mat Sci & Met, Ekaterinburg 620002, Russia

[4] Russian Acad Sci, Ural Branch, Inst Solid State Chem, Ekaterinburg 620990, Russia

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2016年 / 124卷 / 03期

基金：

俄罗斯基础研究基金会;

关键词：

Mayenite; Phase transitions; Peroxide; Hole condensation; CRYSTAL 12CAO-CENTER-DOT-7AL(2)O(3); OXYGEN; OXIDE; ELECTRIDE; CHEMISTRY; ALUMINATE; CERAMICS;

D O I：

10.1007/s10973-016-5282-4

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This paper was devoted to explanation of the phase transitions nature in Ca12Al14O33 +/-delta which were studied by a combination of methods: simultaneous thermal analysis, high-temperature X-ray diffraction analysis, Raman spectroscopy. One of the phase transitions is assumed to be connected with peroxide ions appearance/disappearance in mayenite at 922 K. The peroxide ions appearance reduces the system's energy. Peroxide ions are responsible for the interaction of mayenite with water giving hydroxyl ions. Another phase transition at 1268 K is caused by changing in stability of electronic defects in mayenite. This paper enlightens correlations between the electronic defects state, the peroxide ions existence and chemical properties of Ca12Al14O33 +/-delta.

引用

页码：1209 / 1216

页数：8

共 37 条

[1] Interstitial oxygen in germanium and silicon [J].

Artacho, E ;

Yndurain, F ;

Pajot, B ;

Ramirez, R ;

Herrero, CP ;

Khirunenko, LI ;

Itoh, KM ;

Haller, EE .

PHYSICAL REVIEW B, 1997, 56 (07) :3820-3833

[2] Structure and oxygen mobility in mayenite (Ca12Al14O33):: a high-temperature neutron powder diffraction study [J].

Boysen, H. ;

Lerch, M. ;

Stys, A. ;

Senyshyn, A. .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS, 2007, 63 (63) :675-682

[3]

Bussem W, 1936, Z KRISTALLOGR, V95, P175

[4]

Chebotin V., 1984, ELECTROCHEMISTRY SOL

[5] NEUTRON POWDER DIFFRACTION PROFILE REFINEMENT STUDIES ON CA11.3AL14O32.3 AND CACIO(D0.88H0.12) [J].

CHRISTENSEN, AN .

ACTA CHEMICA SCANDINAVICA SERIES A-PHYSICAL AND INORGANIC CHEMISTRY, 1987, 41 (02) :110-112

[6] ASSESSMENT OF THE CAO-AL2O3 SYSTEM [J].

HALLSTEDT, B .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1990, 73 (01) :15-23

[7] Thermodynamics and kinetics of hydroxide ion formation in 12CaO•7Al2O3 [J].

Hayashi, K ;

Hirano, M ;

Hosono, H .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (24) :11900-11906

[8] Effect of stability and diffusivity of extra-framework oxygen species on the formation of oxygen radicals in 12CaO•7Al2O3 [J].

Hayashi, K ;

Ueda, N ;

Hirano, M ;

Hosono, H .

SOLID STATE IONICS, 2004, 173 (1-4) :89-94

[9] Light-induced conversion of an insulating refractory oxide into a persistent electronic conductor [J].

Hayashi, K ;

Matsuishi, S ;

Kamiya, T ;

Hirano, M ;

Hosono, H .

NATURE, 2002, 419 (6906) :462-465

[10] Microporous crystal 12CaO•7Al2O3 encaging abundant O- radicals [J].

Hayashi, K ;

Hirano, M ;

Matsuishi, S ;

Hosono, H .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (05) :738-739

← 1 2 3 4 →