Effects of various catalysts on hydrogen release and uptake characteristics of LiAlH4

被引:95
作者
Resan, M
Hampton, MD
Lomness, JK
Slattery, DK
机构
[1] Univ Cent Florida, Dept Chem, Orlando, FL 32816 USA
[2] Florida Solar Energy Ctr, Cocoa, FL 32922 USA
关键词
hydrides; alanates;
D O I
10.1016/j.ijhydene.2004.12.009
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
The effects of various catalysts on the hydrogen release characteristics of LiAlH4 were studied. The catalysts were incorporated into the alanate by ball milling. The catalysts studied included elemental titanium, TiH2, TiCl4, TiCl3, AlCl3, FeCl3, elemental iron, elemental nickel, elemental vanadium, and carbon black. Dehydriding/rehydriding properties were characterized by using differential scanning calorimetry coupled with pressure measurement and X-ray diffraction. The addition of TiCl3 and TiCl4 to LiA1H(4) eliminated the first step of hydrogen evolution and significantly lowered decomposition temperature of the second step. Doping with elemental iron caused only a slight decrease in the amount of hydrogen released and did not eliminate the first step of hydrogen evolution. Ball milling in the absence of the catalyst was found to decrease the release temperature of hydrogen, while doping with elemental iron did not have any additional effect on the temperature of hydrogen release of LiAlH4. (c) 2005 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:1413 / 1416
页数:4
相关论文
共 10 条
[1]   DIRECT SYNTHESIS OF NA3AIH6 [J].
ASHBY, EC ;
KOBETZ, P .
INORGANIC CHEMISTRY, 1966, 5 (09) :1615-&
[2]   Titanium catalyzed solid-state transformations in LiAlH4 during high-energy ball-milling [J].
Balema, VP ;
Wiench, JW ;
Dennis, KW ;
Pruski, M ;
Pecharsky, VK .
JOURNAL OF ALLOYS AND COMPOUNDS, 2001, 329 (1-2) :108-114
[3]   Ti-doped alkali metal aluminium hydrides as potential novel reversible hydrogen storage materials [J].
Bogdanovic, B ;
Schwickardi, M .
JOURNAL OF ALLOYS AND COMPOUNDS, 1997, 253 (1-2) :1-9
[4]   Metal-doped sodium aluminium hydrides as potential new hydrogen storage materials [J].
Bogdanovic, B ;
Brand, RA ;
Marjanovic, A ;
Schwickardi, M ;
Tölle, J .
JOURNAL OF ALLOYS AND COMPOUNDS, 2000, 302 (1-2) :36-58
[5]   STUDY OF THERMAL-DECOMPOSITION OF COMPLEX METAL HYDRIDES [J].
DILTS, JA ;
ASHBY, EC .
INORGANIC CHEMISTRY, 1972, 11 (06) :1230-&
[6]  
DYMOVA TN, 1975, DOKL AKAD NAUK SSSR+, V224, P591
[7]   In-situ X-ray diffraction study of the decomposition of NaAlH4 [J].
Gross, KJ ;
Guthrie, S ;
Takara, S ;
Thomas, G .
JOURNAL OF ALLOYS AND COMPOUNDS, 2000, 297 (1-2) :270-281
[8]   Advanced titanium doping of sodium aluminum hydride: segue to a practical hydrogen storage material? [J].
Jensen, CM ;
Zidan, R ;
Mariels, N ;
Hee, A ;
Hagen, C .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 1999, 24 (05) :461-465
[9]  
RESAN M, IN PRESS INT J HYDRO
[10]   Hydrogenation properties of complex alkali metal hydrides fabricated by mechano-chemical synthesis [J].
Zaluski, L ;
Zaluska, A ;
Ström-Olsen, JO .
JOURNAL OF ALLOYS AND COMPOUNDS, 1999, 290 (1-2) :71-78