Titanium catalyzed solid-state transformations in LiAlH4 during high-energy ball-milling

被引：187

作者：

Balema, VP

Wiench, JW

Dennis, KW

Pruski, M

Pecharsky, VK

机构：

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

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

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2001年 / 329卷 / 1-2期

关键词：

lithium aluminum hydrides; mechanochemistry; solid state catalysis;

D O I：

10.1016/S0925-8388(01)01570-5

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：

Mechanical processing of polycrystalline LiAlH4 in the presence of titanium- and iron-based catalysts induces the transformation of LiAlH4 into Li(3)AIH(6), Al and H-2 at room temperature. Several catalysts were tested and it was established that their activity gradually decreases from TiCl4 to Fe in the series TiCl4 > Al3Ti much greater than Al22Fe3Ti8 > Al3Fe > Fe. The high catalytic activity of TiCl4 has been attributed to microcrystalline intermetallic Al3Ti, which rapidly forms in situ from TiCl4 and LiAlH4 during mechanical processing and then acts as a heterogeneous dehydrogenation catalyst. (C) 2001 Elsevier Science BY All rights reserved.

引用

页码：108 / 114

页数：7

共 37 条

[1] Rapid solid-state transformation of tetrahedral [AlH4]- into octahedral [AlH6]3- in lithium aluminohydride
Balema, VP
Dennis, KW
Pecharsky, VK
[J]. CHEMICAL COMMUNICATIONS, 2000, (17) : 1665 - 1666
[2] Solid state phase transformations in LiAlH4 during high-energy ball-milling
Balema, VP
Pecharsky, VK
Dennis, KW
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2000, 313 (1-2) : 69 - 74
[3] BALEMA VP, UNPUB
[4] COMPARATIVE-STUDY OF TETRAHYDROALUMINATE AND TETRAHYDRODEUTEROALUMINATES OF LITHIUM LIALH4, LIALD4 .1. PREPARATION, RADIOCRYSTALLOGRAPHY AND THERMAL-BEHAVIOR
BASTIDE, JP
BONNETOT, B
LETOFFE, JM
CLAUDY, P
[J]. MATERIALS RESEARCH BULLETIN, 1985, 20 (09) : 999 - 1007
[5] HETERONUCLEAR DECOUPLING IN ROTATING SOLIDS
BENNETT, AE
RIENSTRA, CM
AUGER, M
LAKSHMI, KV
GRIFFIN, RG
[J]. JOURNAL OF CHEMICAL PHYSICS, 1995, 103 (16) : 6951 - 6958
[6] Ti-doped alkali metal aluminium hydrides as potential novel reversible hydrogen storage materials
Bogdanovic, B
Schwickardi, M
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 1997, 253 (1-2) : 1 - 9
[7] Metal-doped sodium aluminium hydrides as potential new hydrogen storage materials
Bogdanovic, B
Brand, RA
Marjanovic, A
Schwickardi, M
Tölle, J
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2000, 302 (1-2) : 36 - 58
[8] BREAULT RW, 2000, P POW SOURC C, V39, P184
[9] STUDY OF THERMAL-DECOMPOSITION OF COMPLEX METAL HYDRIDES
DILTS, JA
ASHBY, EC
[J]. INORGANIC CHEMISTRY, 1972, 11 (06) : 1230 - &
[10] Dymova TN, 1998, DOKL AKAD NAUK+, V359, P200

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