Solid state phase transformations in LiAlH4 during high-energy ball-milling

被引：146

作者：

Balema, VP

Pecharsky, VK

Dennis, KW

机构：

[1] Iowa State Univ, Ames Lab, Ames, IA 50011 USA

[2] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2000年 / 313卷 / 1-2期

关键词：

lithium aluminum hydride; mechanochemistry; solid state catalysis;

D O I：

10.1016/S0925-8388(00)01201-9

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Mechanochemical processing of polycrystalline LiAlH4 revealed good stability of this complex aluminohydride during high-energy ball-milling in a helium atmosphere for up to 35 h. The decomposition of lithium aluminohydride into Li3AlH6, Al and H-2 is observed during prolonged mechanochemical treatment for up to 110 h and is most likely associated with the catalytic effect of a vial material, iron, which is introduced into the hydride as a contaminant during mechanical treatment. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：69 / 74

页数：6

共 25 条

[1] Rapid solid-state transformation of tetrahedral [AlH4]- into octahedral [AlH6]3- in lithium aluminohydride [J].