Controlled thermal decomposition of NaSi to derive silicon clathrate compounds

被引：58

作者：

Horie, Hiro-Omi ^{[1
]}

Kikudome, Takashi ^{[1
]}

Teramura, Kyosuke ^{[1
]}

Yamanaka, Shoji ^{[1
]}

机构：

[1] Hiroshima Univ, Grad Sch Engn, Dept Appl Chem, Higashihiroshima 7398527, Japan

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2009年 / 182卷 / 01期

关键词：

Silicon clathrate; Thermal decomposition; Sodium monosilicide; CONDUCTIVITY; NA8SI46;

D O I：

10.1016/j.jssc.2008.10.007

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Formation conditions of two types of sodium containing silicon clathrate compounds were determined by the controlled thermal decomposition of sodium monosilicide NaSi under vacuum. The decomposition began at 360 degrees C. Much higher decomposition temperatures and the presence of sodium metal vapor were favorable for the formation of type I clathrate compound Na8Si46. Type II clathrate compound NaxSi136 Was obtained as a single phase at a decomposition temperature <440 degrees C under the condition without sodium metal vapor. The type 1 clathrate compound was decomposed to crystalline Si above 520 degrees C. The type II clathrate compound was thermally more stable, and retained at least up to 550 degrees C in vacuum. (C) 2008 Elsevier Inc. All rights reserved.

引用

页码：129 / 135

页数：7

共 29 条

[1] On the clathrate form of elemental silicon, Si136:: preparation and characterisation of NaxSi136 (X → 0) [J].

Ammar, A ;

Cros, C ;

Pouchard, M ;

Jaussaud, N ;

Bassat, JM ;

Villeneuve, G ;

Duttine, M ;

Ménétrier, M ;

Reny, E .

SOLID STATE SCIENCES, 2004, 6 (05) :393-400

[2] Ba8Ga16Sn30 with type-I clathrate structure:: Drastic suppression of heat conduction [J].

Avila, M. A. ;

Suekuni, K. ;

Umeo, K. ;

Fukuoka, H. ;

Yamanaka, S. ;

Takabatake, T. .

APPLIED PHYSICS LETTERS, 2008, 92 (04)

[3] Synthesis and thermal conductivity of type II silicon clathrates [J].

Beekman, M. ;

Nolas, G. S. .

PHYSICA B-CONDENSED MATTER, 2006, 383 (01) :111-114

[4]

BEEKMAN M, 2008, J MATER CHEM, V18

[5] Clathrate III of group 14 exists after all [J].

Bobev, S ;

Sevov, SC .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2001, 123 (14) :3389-3390

[6] Clathrates of group 14 with alkali metals: An exploration [J].

Bobev, S ;

Sevov, SC .

JOURNAL OF SOLID STATE CHEMISTRY, 2000, 153 (01) :92-105

[7]

COELHO A, 2007, TOPAS ACAD V 4 1 GEN

[8]

CROS C, 1965, CR HEBD ACAD SCI, V260, P4764

[9]

Cros C., 1970, J SOLID STATE CHEM, V2, P570, DOI [DOI 10.1016/0022-4596(70)90053-8, 10.1016/0022-4596(70)90053-8]

[10] Electron structure and temperature-dependent shifts in 133Cs NMR spectra of the Cs8Ge136 clathrate -: art. no. 115208 [J].

Gryko, J ;

Marzke, RF ;

Lamberton, GA ;

Tritt, TM ;

Beekman, M ;

Nolas, GS .

PHYSICAL REVIEW B, 2005, 71 (11)

← 1 2 3 →