A kinetics model of hydrogen absorption and desorption in Ti-doped NaAlH4

被引：94
|
作者：
Luo, WF [1 ]
Gross, KJ [1 ]
机构：
[1] Sandia Natl Labs, Analyt Mat Sci Dept, Livermore, CA 94550 USA
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2004年 / 385卷 / 1-2期
关键词：
Ti-doped; kinetics; NaAlH4;
D O I：
10.1016/j.jallcom.2004.05.004
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 kinetics of the hydrogen sorption of Ti-doped direct-synthesized NaAlH4 has been studied by measuring sorption rates at various temperatures and applied pressures. Formation and decomposition rate equations for NaAlH4 and Na3AlH6 are proposed, and pre-exponential factors and activation energies have been calculated for these reactions. These equations were used to calculate alanate decomposition curves. The results fit the experimental data very well. The predictive capabilities of this empirical approach provide a very useful modeling tool for optimizing the performance of the alanates over a range of hydrogen absorption temperatures and pressures. Under a typical hydrogen-loading condition (constant pressure), the optimum temperature for "fast fill" can be determined. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：224 / 231
页数：8
相关论文
共 50 条
  • [41] Decomposition behavior of Ti-doped NaAlH4 studied using X-ray absorption spectroscopy at the titanium K-edge
    Bruster, E
    Dobbins, TA
    Tittsworth, R
    Anton, D
    MATERIALS FOR HYDROGEN STORAGE-2004, 2005, 837 : 47 - 52
  • [42] Evolution of the active species and catalytic mechanism of Ti doped NaAlH4 for hydrogen storage
    Xiong, Renjin
    Sang, Ge
    Zhang, Guanghui
    Yan, Xiayan
    Li, Peilong
    Yao, Yong
    Luo, Deli
    Chen, Chang'an
    Tang, Tao
    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2017, 42 (09) : 6088 - 6095
  • [43] Hydrogen absorption kinetics and structural features of NaAlH4 enhanced with transition-metal and Ti-based nanoparticles
    Pitt, M. P.
    Vullum, P. E.
    Sorby, M. H.
    Emerich, H.
    Paskevicius, M.
    Webb, C. J.
    Gray, E. MacA
    Buckley, C. E.
    Walmsley, J. C.
    Holmestad, R.
    Hauback, B. C.
    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2012, 37 (20) : 15175 - 15186
  • [44] Hydrogen Absorption Kinetics of the Transition-Metal-Chloride-Enhanced NaAlH4 System
    Pitt, Mark P.
    Vullum, Per E.
    Sorby, Magnus H.
    Emerich, Hermann
    Paskevicius, Mark
    Buckley, Craig E.
    Walmsley, John C.
    Holmestad, Randi
    Hauback, Bjorn C.
    JOURNAL OF PHYSICAL CHEMISTRY C, 2012, 116 (27): : 14205 - 14217
  • [45] Effect of Ti Doping on Hydrogen Storage Performance of NaAlH4
    Su Zheng
    Ye Jiayu
    Zhou Runfeng
    Duan Yinsheng
    RARE METAL MATERIALS AND ENGINEERING, 2012, 41 : 731 - 734
  • [46] Small Ti clusters for catalysis of hydrogen exchange in NaAlH4
    Fichtner, M
    Fuhr, O
    Kircher, O
    Rothe, J
    NANOTECHNOLOGY, 2003, 14 (07) : 778 - 785
  • [47] Structure of Ti in TiCl3 doped NaAlH4
    Balde, C. P.
    Stil, H. A.
    van der Eerden, A. M. J.
    de Jong, K. P.
    Bitter, J. H.
    X-RAY ABSORPTION FINE STRUCTURE-XAFS13, 2007, 882 : 613 - +
  • [48] Investigations on hydrogen storage behavior of CNT doped NaAlH4
    Pukazhselvan, D
    Gupta, BK
    Srivastava, A
    Srivastava, ON
    JOURNAL OF ALLOYS AND COMPOUNDS, 2005, 403 (1-2) : 312 - 317
  • [49] Catalytic effect and reaction mechanism of Ti doped in NaAlH4: A review
    WANG Qiang
    Chinese Science Bulletin, 2008, (12) : 1784 - 1788
  • [50] Improvement in desorption kinetics of NaAlH4 catalyzed with TiO2 nanopowder
    Lee, Gil-Jae
    Shim, Jae-Hyeok
    Cho, Young Whan
    Lee, Kyung Sub
    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2008, 33 (14) : 3748 - 3753
12345